If you have in a Linux environment (or cygwin under windows) you can use “cdrecord -atip” to check the disc type.
$ cdrecord -atip
Device was not specified. Trying to find an appropriate drive…
hm, 1, 0, 0
hm, 1, 0, 0
Using drive: L:
Device type : Removable CD-ROM
Version : 0
Response Format: 2
Capabilities :
Vendor_info : 'ATAPI ’
Identification : 'iHAS124 F ’
Revision : ‘CL9M’
Device seems to be: Generic mmc2 DVD-R/DVD-RW.
Using generic SCSI-3/mmc CD-R/CD-RW driver (mmc_cdr).
Driver flags : MMC-3 SWABAUDIO BURNFREE FORCESPEED
Supported modes: TAO PACKET SAO SAO/R96P SAO/R96R RAW/R16 RAW/R96P RAW/R96R
ATIP info from disk:
Indicated writing power: 4
Is not unrestricted
Is not erasable
Disk sub type: Medium Type A, high Beta category (A+) (3)
ATIP start of lead in: -11077 (97:34/23)
ATIP start of lead out: 359848 (79:59/73)
Disk type: Long strategy type (Cyanine, AZO or similar)
Manuf. index: 11
Manufacturer: Mitsubishi Chemical Corporation
$ cdrecord -atip
Device was not specified. Trying to find an appropriate drive…
hm, 1, 0, 0
hm, 1, 0, 0
Using drive: L:
Device type : Removable CD-ROM
Version : 0
Response Format: 2
Capabilities :
Vendor_info : 'ATAPI ’
Identification : 'iHAS124 F ’
Revision : ‘CL9M’
Device seems to be: Generic mmc2 DVD-R/DVD-RW.
Using generic SCSI-3/mmc CD-R/CD-RW driver (mmc_cdr).
Driver flags : MMC-3 SWABAUDIO BURNFREE FORCESPEED
Supported modes: TAO PACKET SAO SAO/R96P SAO/R96R RAW/R16 RAW/R96P RAW/R96R
ATIP info from disk:
Indicated writing power: 5
Is not unrestricted
Is not erasable
Disk sub type: Medium Type B, low Beta category (B-) (4)
ATIP start of lead in: -12520 (97:15/05)
ATIP start of lead out: 359849 (79:59/74)
Disk type: Short strategy type (Phthalocyanine or similar)
Manuf. index: 26
Manufacturer: TDK Corporation
$ cdrecord -atip
Device was not specified. Trying to find an appropriate drive…
hm, 1, 0, 0
hm, 1, 0, 0
Using drive: L:
Device type : Removable CD-ROM
Version : 0
Response Format: 2
Capabilities :
Vendor_info : 'ATAPI ’
Identification : 'iHAS124 F ’
Revision : ‘CL9P’
Device seems to be: Generic mmc2 DVD-R/DVD-RW.
Using generic SCSI-3/mmc CD-R/CD-RW driver (mmc_cdr).
Driver flags : MMC-3 SWABAUDIO BURNFREE FORCESPEED
Supported modes: TAO PACKET SAO SAO/R96P SAO/R96R RAW/R16 RAW/R96P RAW/R96R
ATIP info from disk:
Indicated writing power: 5
Is not unrestricted
Is not erasable
Disk sub type: Medium Type A, high Beta category (A+) (3)
ATIP start of lead in: -11634 (97:26/66)
ATIP start of lead out: 359846 (79:59/71)
Disk type: Short strategy type (Phthalocyanine or similar)
Manuf. index: 3
Manufacturer: CMC Magnetics Corporation