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SubjectRe: HFS-formatted CDROMs (was: Re: Linux 2.4 Status)
On Thu, 10 Aug 2000, Ricky Beam wrote:
>
> Every CDROM drive placed in a PC supports 512 byte sectoring (usually right
> out of the factory.) The rarer find is a 2048 byte sectored drive common
> to old Sun hardware -- infact, most Sun's cannot boot from a CDROM that
> doesn't power up in 2k mode. (All of my plextor drives have a jumper for
> setting the block size.)


Reverse this, PCs use 2048 byte, Suns and SGI units 512. Any
post 1990 SGI will issue a SCSI command to reset to 512 if the drive
defaults to 2048, so they will boot without setting the 512byte block
mode jumper. The Suns however require the jumper set to boot, though
they will read from a drive defaulting to 2048 byte block (just not
boot).

---
As folks might have suspected, not much survives except roaches,
and they don't carry large enough packets fast enough...
--About the Internet and nuclear war.



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