On 03/06/2011 05:10 PM, Joachim Schipper wrote: > On Sun, Mar 06, 2011 at 04:14:33PM +0100, Jens A. Griepentrog wrote: >> On 03/06/11 02:25, Matthew Dempsky wrote: >>> [...] Jens A. Griepentrog <griep...@wias-berlin.de> wrote: >>>> What went wrong? The procedure works for usual hard disks and memory >>>> sticks with sectors of 512 bytes. I would be grateful for any hint. >>>> (As a final aim I would like to have some bootable magneto-optical >>>> disk with root partition a: and two more partitions d: and e: ...) >>> >>> When you say "The procedure works for usual hard disks and memory >>> sticks [...]", do you mean it works on this same system when attached >>> to the same ahc(4) controller? E.g., if you replace this sd0 with a >>> standard SCSI disk, will the same set of fdisk/disklabel/newfs >>> commands work correctly? >> >> Thanks, Matthew, I just checked this again with some 16-year old SCSI >> disk to give a rigorous proof of my above statement: >> >> ... >> ahc0 at pci6 dev 2 function 0 vendor "Adaptec", >> unknown product 0x0082 rev 0x02: apic 7 int 21 (irq 3) >> scsibus0 at ahc0: 8 targets, initiator 7 >> sd0 at scsibus0 targ 4 lun 0: <QUANTUM, FIREBALL1080S, 1Q09> >> SCSI2 0/direct fixed >> sd0: 1042MB, 512 bytes/sec, 2134305 sec total >> ... > >>> a e >> offset: [64] > ^^ > > That was 32 in your earlier example. Did you try some > appropriately-large offsets? (AFAIK, that shouldn't help, but maybe the > first sectors are "magical" or maybe the disk barfs on "unaligned" > access?) > > Joachim >
Thanks, Joachim, I tried different larger multiples of 32 as offsets but it does not help. Jens [demime 1.01d removed an attachment of type APPLICATION/DEFANGED which had a name of griepent.18083DEFANGED-vcf]
