On Wed, 9 Aug 2000, Bernd Kischnick wrote:
>bad news concerning HFS-formatted CD-ROMs:
>Support seems to depend on the CD-ROM-drive (!!!).
...
>Trying to change the blocksize of the CD-ROM device ends up in function
>sr_set_blocklength() (for an SCSI CD-ROM drive at least), and this sits in
>file drivers/scsi/sr_vendor.c, which name already tells everything.
>Changing the blocksize to 512 can succeed, but it doesn't have to.
>I wouldn't know about the prevalence of 512b-sectors-capable CD-ROM drives
>in the field...
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.)
Personally, I wouldn't blame the drive. The biggest problem is the limit in
the HFS driver.
--Ricky
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