Hmmm .... I used to get those too -- until I "spamproofed" my
"From: " in the headers. :-) If you have to send an email, you look in
the .sig to see how. :-)
> Jason <sys...@openvms.org
> spake the secret code
>>> You need a CD-R drive that supports 512 byte blocks. Without that, you
>>> won't be able to see anything of the structure inside the disc, even if
>>> it's a linux box.
>>No true, you can dump the disc contents to a disk image, i.e.:
>>dd if=/dev/cdrom of=diskfile.iso bs=512
> Have you actually done this?
> Perhaps the CD-ROM requirement was for using the disc with an actual
> SGI system.
Well ... for older Suns (I know -- wrong newsgroup collection --
but it is my experience -- one SGI, lots of Suns :-) you needed one
which could be switch set to 512 byte sectors as the default to *boot*
from it, but a booted system could command the drive to switch from its
default (2048 bytes, per sector, IIRC) to 512 bytes/sector to use a
drive from a PC or whatever in such a way as to keep the Sun happy. The
problem was that part of the boot sequence was a command to reset
everything on the SCSI bus to its defaults.
Later Sun systems added enough smarts to the boot ROM to command
a switch to 512 bytes/sec, so you can boot from other discs. I have a
IDE interfaced DVD ROM/burner with an ASUS bridge card to convert it to
SCSI which the system will quite happily boot from. Good thing, because
SCSI DVD burners are not cheap -- if you can find them. :-)
So -- it might well be that the SGI will also issue the command
to switch to 512 bytes/sector from the driver in the OS if necessary --
or perhaps just by default, since if it is already at 512 bytes/sector
it won't hurt anything. ;-)
Almost certainly linux should do this as well -- since it is
likely to confronted with almost any mix of hardware.
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