Why the cdrecord detect driver's buf szie is not the same as the driver?
When I used cdrecord to record discs ,I found the cdrecord detected writers' buf is wrong ,this writer buf value is 2M,but when I used it to record cdr,it appeared as below---there only 870KB.when I recorded dvdr,the vlue changed to 992KB,why it can't recorgnize its right value.If I want to use the writer right buf value--2M,how can I do ?
./cdrecord -v -dummy fs=16m dev=ATAPI:0,6,0 /tmp/cd driveropts=burnfree gracetime=3
./cdrecord: No write mode specified.
./cdrecord: Asuming -tao mode.
./cdrecord: Future versions of cdrecord may have different drive dependent defaults.
./cdrecord: Continuing in 5 seconds...
Cdrecord-ProDVD-Clone 2.01.01a19 (i686-pc-linux-gnu) Copyright (C) 1995-2006 J鰎g Schilling
TOC Type: 1 = CD-ROM
scsibus: 0 target: 6 lun: 0
Warning: Using ATA Packet interface.
Warning: The related Linux kernel interface code seems to be unmaintained.
Warning: There is absolutely NO DMA, operations thus are slow.
Using libscg version 'schily-0.8'.
SCSI buffer size: 64512
Device type : Removable CD-ROM
Version : 0
Response Format: 2 Capabilities :
Vendor_info : 'SONY '
Identifikation : 'DVD RW AW-G170A '
Revision : '1.62'
Device seems to be: Generic mmc2 DVD-R/DVD-RW/DVD-RAM.
Profile: DVD-R/DL layer jump recording
Profile: DVD-R/DL sequential recording
Profile: DVD-RW sequential overwrite
Profile: DVD-RW restricted overwrite
Profile: DVD-R sequential recording
Profile: CD-R (current)
Profile: CD-ROM (current)
Profile: Removable Disk
Using generic SCSI-3/mmc CD-R/CD-RW driver (mmc_cdr).
Driver flags : MMC-3 SWABAUDIO BURNFREE
Supported modes: TAO PACKET SAO SAO/R96R RAW/R96R
Drive buf size : 890880 = 870 KB
FIFO size : 16777216 = 16384 KB
Track 01: data 207 MB
Total size: 238 MB (23:36.26) = 106220 sectors
Lout start: 238 MB (23:38/20) = 106220 sectors
Current Secsize: 2048
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: -11607 (97:27/18)
ATIP start of lead out: 359849 (79:59/74)
Disk type: Short strategy type (Phthalocyanine or similar)
Manuf. index: 18
Manufacturer: Plasmon Data systems Ltd.
Capacity Blklen/Sparesz. Type
0 2048 No Media Present or Unknown Capacity
Blocks total: 359849 Blocks current: 359849 Blocks remaining: 253629
Starting to write CD/DVD at speed 32 in dummy TAO mode for single session.
Last chance to quit, starting dummy write in 3 seconds.