JPH1116286A - Recording medium and method of formatting recording medium - Google Patents

Abstract

(57) [Problem] To provide a recording medium and the like recorded in a plurality of sector sizes that can recognize recorded data without providing a plurality of recording / reproducing circuits in a recording / reproducing device. SOLUTION: A management area of an optical disc D is provided with a zone specification information area and a disc information area. In the zone specification information area, 2 KB / Sector and 32 K
The B / Sector records a sector header, sector size information of each zone, information on the presence / absence of certification of each zone, and LUN allocation information of each zone. That is, in the zone specification information area, 2 KB / Se
The same information is written in each of two sets, namely, the C.tor and the 32 KB / Sector.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium capable of recording data in a plurality of sector sizes and having a data recording area divided into a plurality of zones, and a method of formatting the recording medium.

[0002]

2. Description of the Related Art Recording media capable of recording and reproduction, such as magnetic disks, optical disks, and magneto-optical disks, have been known. In such a recording medium on which recording and reproduction can be performed, a sector size, which is a unit for writing and reading data, is specified. For example, as this sector size, 512 B (Bit) / Sector, 2 KB /
Sector, 16KB / Sector, 32KB / S
and the like.

[0003]

By the way, even if recording media of the same type and the same shape have different sector sizes of recorded data, a recording circuit and a reproducing circuit dedicated to the sector size are provided. If it is not a recording / reproducing device, the data cannot be read.

For example, even if the magneto-optical disk has the same shape, the format of the magneto-optical disk is 2 KB / S.
There is a case where there is a format of sector and sector size of 32 KB / Sector. In such a case, a recording / reproducing apparatus having only a 32 KB / Sector recording / reproducing circuit cannot read data from a magneto-optical disk recorded at 2 KB / Sector. Therefore, in a recording / reproducing apparatus having only a recording / reproducing circuit of 32 KB / Sector, 2 KB /
Since the magneto-optical disk recorded by the Sector cannot be recognized, there is a case where the magneto-optical disk is erroneously determined to be a virgin disk to perform processing such as initialization. On the other hand, in a recording / reproducing apparatus having only a recording / reproducing circuit of 2 KB / Sector, 32 KB /
Since the magneto-optical disk recorded by the Sector cannot be recognized, there is a case where the magneto-optical disk is erroneously determined to be a virgin disk to perform processing such as initialization.

[0005] Some recordable and reproducible recording media such as magnetic disks, optical disks, and magneto-optical disks divide a data recording area into a plurality of zones and manage data for each zone.

However, even if the data is divided into a plurality of zones, the sector size of the data to be recorded must be the same in all the zones.

When a recordable / reproducible recording medium such as a magnetic disk, an optical disk or a magneto-optical disk is used for recording computer data or the like, a defective sector is found and the defective sector is used as a replacement sector. A certifying process, which is an assignment process, must be performed.

However, when certifying a recording medium, a very long time is required. For example, in the case of a recording medium having a recording capacity of several MB, a unit time such as several hours is required, which is inconvenient.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and has a plurality of sector sizes capable of recognizing recorded data without providing a plurality of recording / reproducing circuits in a recording / reproducing apparatus. It is an object of the present invention to provide a recording medium recorded by the method and a method of formatting the recording medium.

Another object of the present invention is to provide a recording medium capable of recording data with a different sector size for each zone and a method of formatting the recording medium.

Another object of the present invention is to provide a recording medium and a method of formatting a recording medium which can be used with a shorter certification time if necessary.

[0012]

A recording medium according to the present invention is divided into a plurality of zones, a main data recording area in which data is recorded in a sector size determined for each zone, and a recording area for each zone. And a zone specification information area in which information of a sector size of data recorded in each zone is recorded with a plurality of determined sector sizes.

In this recording medium, a zone specification information area is provided to record sector size information in a plurality of sector sizes.

According to a method of formatting a recording medium according to the present invention, a main data recording area and a main data management information area are divided, and the main data recording area is divided into a plurality of zones. The main data is recorded in the specified sector size. And the replacement sector information of each zone is recorded in the disk information area with a sector size recorded in each zone.

In this recording medium formatting method, a zone specification information area and a disk information area are provided, and information in the zone specification information area is recorded with a plurality of sector sizes.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an optical disc according to an embodiment to which the present invention is applied will be described with reference to the drawings.

FIG. 1 is a diagram for explaining a recording area (hereinafter referred to as an R / W area) of an optical disc D according to an embodiment to which the present invention is applied.

In the R / W area of the optical disc D, management areas are provided on the outer circumference side and the inner circumference side, respectively. In the R / W area of the optical disc D, a data recording area is provided in an area sandwiched between the management areas on the outer circumference side and the inner circumference side.
The data recording area is concentrically divided into a plurality of zones, for example, divided into n zones from Zone (1) to Zone (n). This Zone
From (1) to Zone (n), this optical disc D
Is recorded, ie, computer data and audio data. Also, this Zone
The sector size of data written from (1) to (n) is, for example, 2 KB / Sector or 32 KB /
Sector.

As shown in FIG. 2, the management area is provided with a zone specification information area and a disk information area.
The management area on the outer peripheral side includes a first zone specification information area,
A second zone specification information area, a first disk information area, and a second disk information area are sequentially provided.
Further, a third disk information area, a fourth disk information area, a third zone specification information area, and a fourth zone specification information area are sequentially provided in the management area on the inner peripheral side. . The same information is recorded in each of the first to fourth zone specification information areas. The same information is recorded in each of the first to fourth disk information areas. This is the first
To the fourth zone specification information area or the first to fourth disk information areas cannot be read out due to scratches on the disk or write errors, etc. It is to record and complement each other.

In the zone specification information area, 2 KB / Sec
A sector header written by tor, sector size information of each zone, information on the presence / absence of certification of each zone, and allocation information of a logical unit number (LUN) of each zone are recorded. In addition, 3
A sector header written in 2 KB / Sector,
Sector size information of each zone, information on the presence or absence of certification in each zone, and LUN allocation information of each zone are recorded.

That is, in the zone specification information area, 2K
The same information is written in a set of two write units of B / Sector and 32 KB / Sector. Therefore, in the recording / reproducing apparatus for this optical disc D, 2 KB / Sector or 32 KB / Sector
Even if only a recording / reproducing circuit of one sector size is provided, it is possible to understand the contents of the optical disc D recorded with an unsupported sector size.
In addition, as shown in FIG. 3, the write data in the case of 2 KB / Sector writes data of a sector having a write data length of 32 KB / Sector.

The sector header indicates a header ID indicating that this sector is a sector in the zone specification information area.

The sector size information of each zone is described in Zone
It shows the sector size of data recorded in each zone from (1) to Zone (n). That is, on the optical disc D, data of a different sector size can be written for each zone. Therefore, information indicating which sector size, 2 KB or 32 KB / Sector, has been written in each zone is recorded in this zone specification information area.

The information on the presence or absence of certification in each zone indicates whether or not each zone from Zone (1) to Zone (n) is performing certification.
That is, in the optical disc D, certification can be performed for each zone.
The zone (5) to (5) can be certified to record computer data, and the other zones can record video data and the like without performing the certification. Also, first certify Zone (1) to Zone (5), and if necessary,
(6) The subsequent zones can be certified later.

The LUN allocation information of each zone is represented by SCSI
The LUN is a drive assignment number in the extended format of (Small Computer Systems Interface). On the optical disk D, when recording and reproducing the optical disk D from the host computer via the recording and reproducing device,
This LUN is allocated so that the host computer can access as a different drive for each zone. That is, when the optical disk D is provided with a certified zone and a non-certified zone, each zone is recognized by the host computer as a drive different from each other, and matching with the host computer is performed. In addition, different LUNs are assigned to different zones with different sector sizes,
The zone that has been certified later is assigned a LUN differently from the zone that has been previously certified, and matching with the host computer is performed. Specifically, as shown in FIG. 4, the LUN of the SCSI is assigned to each zone in the zone specification information area.

FIG. 5 shows an example of data recorded in the zone specification information area. Here, the type of each zone (AV / Computer) indicates the contents of data recorded in each zone. For example, video data or audio data is AV, and other computer data is AV. Computer. Further, the total number of sectors in each zone indicates the number of sectors in which data can be recorded in each zone.

On the other hand, in the disk information area, as shown in FIG. 2, the disk information area of Zone (1) to Zone
The disk information is divided into the disk information areas (n), and the disk information of each corresponding zone is recorded. The disk information of each of these zones is recorded in a sector size corresponding to the sector size of the main data recorded in each zone. That is, 2 KB / S is applied to Zone (1).
If data is recorded in the zone (1)
Each information is recorded in 2 KB / Sector in the disc information area of 32 KB, and 32 KB / Se in Zone (n).
If data is recorded in the zone, this Zone
In the disk information area of (n), 32 KB / Secto
Each information is recorded by r.

In the disk information area corresponding to each zone, a sector header, sector size information of this zone, information on the presence / absence of certification of this zone, and replacement sector information of this zone are recorded.

The sector header indicates a header ID indicating that this sector is a sector in the disk information area of the corresponding zone.

The sector size information indicates the sector size of the data recorded in this zone.

The information on the presence / absence of certification indicates whether or not this zone is performing certification.

The replacement sector information indicates address information of the replacement sector of the sector in this zone.

FIG. 6 shows an example of data recorded in the disc information area. Here, the type of each zone (AV / Computer) indicates the content of the data recorded in each zone. For example, if the data is video data or audio data, the type is AV, and any other computer data is used. It becomes Computer.
Further, the total number of sectors in each zone indicates the number of sectors in which data can be recorded in each zone. Also, Pr
The "imaryDefect" is a defective sector found when the optical disk D is first certified. When there is a defective sector (Primary Defect), an address corresponding to the replacement sector of each zone is provided. Also, SecondaryDefect
Is a defective sector found after certification. This defective sector (SecondaryDe
In the case where there is "fact", an address corresponding to the replacement sector of each zone is provided.

As described above, in the optical disc D, the zone specification information area and the disc information area are provided, and 2 KB / S
By recording information of the zone specification information area with two sector sizes of 32 KB / Sector and 2 KB / Sector or 32 KB / Sector.
Even if only one of the recording / reproducing circuits of the B / Sector is provided, the recording / reproducing apparatus can recognize the optical disc D.

In the optical disc D, sector size information for each zone is recorded in the zone specification information area.
Recording can be performed with a different sector size for each zone. In the optical disc D, the certification information for each zone is recorded in the zone specification information area. Therefore, certification can be performed for each zone, and the certification time can be shortened as required by the user. In the optical disc D, computer data and AV data can be recorded separately for each zone. Further, in the optical disc D, the certification information for each zone is recorded in the zone specification information area, so that the non-certified zone can be later certified, so that the zone for recording computer data is increased later. can do.

In the optical disc D, drive number information for each zone is recorded in the zone specification information area.
The interface with the host computer becomes easy.

Next, a case where AV data such as video data or computer data is recorded on the optical disk D using the above-described format will be described.

When recording AV data, as shown in FIG. 7, on the optical disk D, an SFP in which data is recorded by pre-pits generated by embossing or the like from the outer peripheral side, and a first zone specification information area are provided. , A second zone specification information area. The optical disc D is provided with an SFP in which data is recorded by prepits generated by embossing or the like from the inner peripheral side, a third zone specification information area, and a fourth zone specification information area. On the optical disc D, Zone (1) to Zone (n) are divided into zones in an area sandwiched between the second zone specification information area and the third zone specification information area.
That is, when recording AV data, only the zone specification information area is provided without providing the disc information area in the management information area, and data can be recorded without creating a spare sector in each zone. In other words, in the case of AV data, reproducibility of reproduced video or audio can be ensured without performing certification.

In the case of recording computer data, as shown in FIG. 8, data is recorded on the optical disk D from the outer periphery in pre-pits generated by embossing or the like.
An FP, a first zone specification information area, a second zone specification information area, a first disk information area, and a second disk information area are provided. Also, on the optical disk D, an SFP in which data is recorded by pre-pits generated by embossing or the like from the inner peripheral side, a third zone specification information area, a fourth zone specification information area, and a third disk information An area and a fourth disk information area are provided. The optical disc D has a second disc information area and a third disc information area.
Zone in the area between the disc information area
Zones (1) to Zone (n) are provided divided into zones. In addition, the optical disc D performs certification for all zones, and a replacement sector area is provided in each zone. That is, when recording computer data, the disc information area and the zone specification information area are provided in the management information area, and the data is recorded. That is,
This is because, unlike the case of AV data, in the case of computer data, the reproducibility of data cannot be ensured even if some data is missing.

In addition to this, when computer data is recorded, the optical disk D has, as shown in FIG.
From the outer peripheral side, an SFP in which data is recorded by prepits generated by embossing or the like, a first zone specification information area, a second zone specification information area, a first disk information area, and a second disk An information area is provided. On the optical disc D, an SFP in which data is recorded by prepits generated by embossing or the like from the inner peripheral side, a third zone specification information area, a fourth zone specification information area,
A third disc information area and a fourth disc information area are provided. The optical disc D has zones (1) to Zone (n) divided into zones in an area between the second disc information area and the third disc information area. Also, on the optical disc D, a spare sector area is provided by certifying only some of the zones, and a spare sector area is not provided without certifying the remaining zones. That is, when the optical disk D is a magneto-optical disk having a recording capacity of several gigabytes, if all the zones are certified, it takes several hours. Therefore, first, only some of the zones are certified, and the remaining areas are certified as necessary. In this case, information on the presence or absence of certification for each zone is recorded in the zone specification information area. Also, the LUN of each zone is changed as needed.

When recording AV data and computer data in a mixed manner, the optical disc D is
As shown in FIG. 0, from the outer peripheral side, an SFP in which data is recorded with prepits generated by embossing or the like, a first zone specification information area, a second zone specification information area, and a first zone specification information area.
And a second disk information area. On the optical disc D, data is recorded by prepits generated by embossing or the like from the inner peripheral side.
An FP, a third zone specification information area, a fourth zone specification information area, a third disk information area, and a fourth disk information area are provided. Then, on the optical disc D, the zone between Zone (1) and Zone (1) is placed in the area between the second disc information area and the third disc information area.
Up to (n) are provided divided into zones. Also, on the optical disc D, only some of the zones are certified to provide a spare sector area, and the remaining zones are not certified and no spare sector area is provided. Optical disk D
In this case, the certified zone is used as a recording area for computer data, and an uncertified area is used as a recording area for AV data.

Next, a method of reading and formatting the optical disk D by a recording / reproducing apparatus for recording and / or reproducing the optical disk D will be described.

The optical disk recording / reproducing apparatus 10 includes, for example, an optical pickup 11, a magnetic head 12, a recording / reproducing unit 13, an encoder / decoder 14, and a host computer 15, as shown in FIG.

The optical pickup 11 has a laser diode, an objective lens, and the like, and irradiates the optical disc D with a laser to obtain a reproduced signal. The magnetic head 12 is an optical disk D
A modulation magnetic field is applied when data is recorded on the recording medium. The recording / reproducing unit 13 performs processing such as binarization and demodulation on the reproduced signal from the optical pickup 11 and supplies the reproduced signal to the encoder / decoder 14. Further, the recording / reproducing unit 13 controls the magnetic head 12 and performs servo control of the optical pickup 11. The encoder / decoder 14 is an ECC circuit for 2 KB / Sector or an ECC circuit for 32 KB / Sector.
An error correction process or the like is performed by using a circuit or both of them. The encoder / decoder 14 and the host computer 15 transmit data by SCSI.

When the optical disk D is inserted, the recording / reproducing apparatus 10 having the above-described configuration performs step S11 shown in FIG.
And the process of step S21 is performed to read data. First, when the optical disc D is inserted, the recording / reproducing apparatus 1
0 sets the variable n to 1 (step S11). Subsequently, the data of the 2 KB / Sector part of the zone specification information area n is read (step S12). If the data cannot be read, the data of 32 KB / Sec of the zone specification information area n is subsequently read.
The data of the tor portion is read (step S13).
If neither 32 KB nor 2 KB / Sector can be read, 1 is added to n (step S1).
5) Repeat the reading of the data in the zone specification information area n by changing the area to be read. If reading is not possible even when n becomes 4, the optical disc D is determined to be unformatted (step S14), and the process is terminated.

The data in the zone specification information area is 2K.
If the data can be read out using either the B / Sector or the 32 KB / Sector, the sector size of the disk information area is recognized (step S16), and the recording / reproducing device 10 is used.
Is determined to be a supported sector size (step S17). That is, it is determined whether there is an ECC circuit having a sector size corresponding to the encoder / decoder 14. If it is determined that the sector size is not supported by the recording / reproducing device 10, the process is terminated.

If the sector size is supported by the recording / reproducing apparatus 10, the variable n is set to 1 (step S18), and the disk information n is read (step S19). Here, if the data of the disk information n cannot be read, 1 is added to n (step S21),
Reading of data in the disk information area n is repeated by changing the area to be read. If the optical disk D cannot be read even when n becomes 4, it is determined that the optical disk D cannot be used by the recording / reproducing apparatus 10 (step S20), and the process is terminated. If the disk information n can be read normally,
After the processing is completed, reading of data of the subsequent target zone is started.

On the other hand, the recording / reproducing apparatus 10 having such a configuration
When the optical disk D is inserted and there is a format instruction, the process from step S31 to step S39 shown in FIG.

First, when the optical disk D is inserted and a format instruction is given, the encoder / decoder 14
It is determined whether an ECC circuit of / Sector is provided (step S31). 2KB / Sector E
If there is no CC circuit, this 2KB / Sect
or soft encoding instead of ECC circuit 2
It is determined whether KB / Sector data can be recorded (step S32). Here, the soft encoding is a process in which the host computer 15 generates an error correction code together with data to be recorded and supplies the error correction code to the recording / reproducing unit 13. That is, the software of the host computer 15 performs the same processing as the ECC circuit. Is performed.

ECC circuit or soft encoding
If the data of the sector size of KB / Sector can be recorded, each data of the first to fourth zone specification information areas is written (step S33). Also,
2KB / Sec by ECC circuit or soft encode
If data with a sector size of tor cannot be recorded, the data of 2 KB /
32KB / Sector data in the Sector area
(Step S34). That is, the optical disk D cannot be read by an ECC circuit having a sector size of 2 KB / Sector.

Subsequently, the encoder / decoder 14 is set to 32
It is determined whether or not a KB / Sector ECC circuit is provided (step S35). 32KB / Secto
If the ECC circuit of r is not provided, this 32 KB /
It is determined whether soft encoding can be performed in place of the ECC circuit of the Sector (step S3).
6).

3 by the ECC circuit or soft encoding
If data having a sector size of 2 KB / Sector can be recorded, each data is written to the first to fourth zone specification information areas (step S37).
If the data of the sector size of 2 KB / Sector cannot be recorded by the ECC circuit or the soft encoding for 2 KB, the data of the 32 KB / Sector area of the first to fourth zone specification information areas is changed to 2 KB / Sector.
It is overwritten and crushed by the KB / Sector ECC circuit or the like (step S38). That is, the data in this area is
The data cannot be read out by a 2 KB / Sector ECC circuit or the like.

Subsequently, the first type is set according to the format specification.
To the fourth to fourth disk information areas.
Here, data is written in the disk information area according to the sector size corresponding to each zone. Then, when the data in the disc information area is written, the processing is terminated.

As described above, in the recording / reproducing apparatus 10, the optical disc D is provided with the zone specification information area and the disc information area, and the 2 KB / Sector and 32 KB / Sect.
By recording information in the zone specification information area with two sector sizes of 2 or
The recording / reproducing apparatus 10 can recognize the optical disc D even if only the Sector or the 32 KB / Sector recording / reproducing circuit is provided.

In the recording / reproducing apparatus 10, 2 KB / S
Since the area of the sector is equal to the area of the 32 KB Sector, the data can be overwritten as it is, making it impossible to read the data with another sector size.

The sector size, which is the unit of writing and reading of the optical disk D, is 2 KB / Secto.
r and 32 KB / Sector, but the present invention is not limited to this. For example, 512 B / Sec.
tor, a sector size of 16 KB / Sector. Further, the sector size corresponding to the optical disk D is not limited to two sector sizes, and may correspond to three or more sector sizes.

[0057]

In the recording medium according to the present invention, the zone specification information area is provided, and the information of the sector size is recorded in a plurality of sector sizes, so that the recording / reproducing apparatus does not need to have a plurality of recording / reproducing circuits. The recording / reproducing apparatus can recognize the recording medium.

Further, in the recording medium according to the present invention, since the sector size information for each zone is recorded in the zone specification information area, it is possible to record with a different sector size for each zone.

In the recording medium according to the present invention, the certification information for each zone is recorded in the zone specification information area, so that the certification can be performed for each zone, and the certification time can be shortened if necessary. can do. In the recording medium according to the present invention, computer data and AV data can be recorded separately for each zone. Further, in the recording medium according to the present invention, since the certification information for each zone is recorded in the zone specification information area, the non-certified zone can be later certified, and therefore, the zone for recording the computer data can be recorded. Can be increased later.

In the recording medium according to the present invention, since the drive number information for each zone is recorded in the zone specification information area, the interface with the host computer becomes easy.

In the recording medium formatting method according to the present invention, the zone specification information area is provided, and information on the sector size is recorded in a plurality of sector sizes, so that the recording / reproducing apparatus is not provided with a plurality of recording / reproducing circuits. Also, the recording / reproducing apparatus can recognize the recording medium.

Further, in the recording medium formatting method according to the present invention, since the sector size information for each zone is recorded in the zone specification information area, it is possible to record with a different sector size for each zone.

In the recording medium formatting method according to the present invention, the certification information for each zone is recorded in the zone specification information area, so that the certification can be performed for each zone. Computer data and AV data can be recorded separately for each zone. In addition, in the recording medium formatting method according to the present invention, since the certification information for each zone is recorded in the zone specification information area, the non-certified zone can be certified later, and therefore, the computer data can be converted. The number of zones to be recorded can be increased later.

In the method for formatting a recording medium according to the present invention, since the drive number information for each zone is recorded in the zone specification information area, the interface with the host computer becomes easy.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a recording area of an optical disc according to an embodiment to which the present invention is applied.

FIG. 2 is a diagram illustrating information recorded in a management area of the optical disc.

FIG. 3 is a diagram illustrating information recorded in a management area of the optical disc.

FIG. 4 is a diagram illustrating information recorded in a management area of the optical disc.

FIG. 5 is a diagram illustrating information recorded in a management area of the optical disc.

FIG. 6 is a diagram illustrating information recorded in a management area of the optical disc.

FIG. 7 is a diagram illustrating information recorded in a recording area of the optical disc.

FIG. 8 is a diagram illustrating information recorded in a recording area of the optical disc.

FIG. 9 is a diagram illustrating information recorded in a recording area of the optical disc.

FIG. 10 is a diagram illustrating information recorded in a recording area on the optical disc.

FIG. 11 is a block diagram of a recording / reproducing apparatus for recording / reproducing the optical disc.

FIG. 12 is a flowchart illustrating the processing contents of the recording / reproducing apparatus.

FIG. 13 is a flowchart for explaining processing contents of the recording / reproducing apparatus.

[Explanation of symbols]

 10 Recording / reproducing device, D optical disk

Claims (10)

[Claims] 1. A main data recording area which is divided into a plurality of zones and in which data is recorded with a sector size determined for each zone, and a plurality of sector sizes determined for each zone. A zone specification information area in which information on a sector size of data to be recorded is recorded. 2. The recording medium according to claim 1, further comprising: a disk information area for recording replacement sector information of each zone with a sector size recorded in each zone. 3. The certification of the main data recording area is performed for each zone, and information of the presence or absence of the certification for each zone is recorded in the zone specification information area. A recording medium according to claim 1. 4. A drive number is set for each zone in the main data recording area, and drive number information for each zone is recorded in the zone specification information area. Item 2. The recording medium according to Item 1. 5. The recording medium according to claim 1, wherein the zone specification information area is recorded in an area where information of each sector size is equal. 6. A main data recording area is divided into a main data management information area, the main data recording area is divided into a plurality of zones, and the main data is recorded in a sector size determined for each zone. Dividing the management area of the main data into a zone specification information area and a disk information area, and recording information of each zone in a plurality of sector sizes determined for each zone in the zone specification information area; A method for formatting a recording medium, characterized in that replacement sector information of each zone is recorded in a region with a sector size recorded in each zone. 7. The recording medium formatting method according to claim 6, wherein information of a sector size of data recorded in each zone is recorded in the zone specification information area. 8. The certification according to claim 6, wherein certification is performed for each zone of the recording area of the main data, and information on the presence or absence of certification for each zone is recorded in the zone specification information area. Formatting method of the recording medium. 9. The system according to claim 6, wherein a drive number is set for each zone of the main data recording area, and information of the drive number for each zone is recorded in the zone specification information area. Formatting method of the recording medium described. 10. The recording medium formatting method according to claim 6, wherein information of each sector size is recorded in the zone specification information area in an equal area.