On Mon, 2003-04-07 at 10:35, M. Fioretti wrote: > Thanks to all those who explained how to proceed, and gave the exact > sizes and checksum of the 3 iso images of shrike. > [root@xxxxxxx root]# dd if=/dev/cdrom bs=2048 count=326656 | md5sum - > 326656+0 records in > 326656+0 records out > 400c7fb292c73b793fb722532abd09ad - I just re-downloaded the disc1 iso, md5sum'ed it, burned it using "-dao" and it did NOT give a correct result when performing a `md5sum /dev/cdrom'. [root@xxxxxxxx kriderde]# cdrecord -v -dao dev=0,2,0 speed=12 driveropts=burnproof shrike-i386-disc1.iso Cdrecord 2.0 (i686-pc-linux-gnu) Copyright (C) 1995-2002 Jrg Schilling TOC Type: 1 = CD-ROM scsidev: '0,2,0' scsibus: 0 target: 2 lun: 0 Linux sg driver version: 3.1.24 Using libscg version 'schily-0.7' Driveropts: 'burnproof' atapi: 0 Device type : Removable CD-ROM Version : 2 Response Format: 2 Capabilities : SYNC LINKED Vendor_info : 'PLEXTOR ' Identifikation : 'CD-R PX-W1210S' Revision : '1.02' Device seems to be: Generic mmc CD-RW. Using generic SCSI-3/mmc CD-R driver (mmc_cdr). Driver flags : MMC SWABAUDIO BURNFREE Supported modes: TAO PACKET SAO SAO/R96P SAO/R96R RAW/R16 RAW/R96P RAW/R96R Drive buf size : 2394336 = 2338 KB FIFO size : 4194304 = 4096 KB Track 01: data 638 MB Total size: 732 MB (72:35.41) = 326656 sectors Lout start: 733 MB (72:37/31) = 326656 sectors Current Secsize: 2048 ATIP info from disk: Indicated writing power: 5 Is not unrestricted Is not erasable Disk sub type: Medium Type A, low Beta category (A-) (2) ATIP start of lead in: -11634 (97:26/66) ATIP start of lead out: 359849 (79:59/74) Disk type: Short strategy type (Phthalocyanine or similar) Manuf. index: 3 Manufacturer: CMC Magnetics Corporation Blocks total: 359849 Blocks current: 359849 Blocks remaining: 33193 Starting to write CD/DVD at speed 12 in real SAO mode for single session. Last chance to quit, starting real write 0 seconds. Operation starts. Waiting for reader process to fill input buffer ... input buffer ready. BURN-Free is ON. Performing OPC... Sending CUE sheet... Writing pregap for track 1 at -150 Starting new track at sector: 0 Track 01: 638 of 638 MB written (fifo 100%) [buf 99%] 0.9x. Track 01: Total bytes read/written: 668991488/668991488 (326656 sectors). Writing time: 389.990s Average write speed 11.3x. Min drive buffer fill was 95% Fixating... Fixating time: 5.189s cdrecord: fifo had 10538 puts and 10538 gets. cdrecord: fifo was 0 times empty and 8930 times full, min fill was 96%. As you can see, my drive supports SAO, counted 326,656 sectors, and didn't have an underrun. Without actually booting this disc and doing a media check, I'm going to assume that the burn is good. I should be all set. But when I try to actually do the md5sum on the disc... [root@xxxxxxxx kriderde]# dd if=/dev/cdrom bs=2048 count=326656 | md5sum - 314323+0 records in 314323+0 records out 4e2fc66c78d566209be2022baebc6db9 - md5sum doesn't even get the number of sectors right. Anyone have any insight here? TIA, dk
