On Thu, Aug 10 2000, J. S. Connell 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.)
>
> Uh, normally I wouldn't comment, but I believe you have this exactly
> backwards. Last I checked you can't boot a Sun from a drive that's _not_
> set to 512-byte sector mode, and I've never seen a non-SCSI CD-ROM drive
> that had the option.
>
> CD-ROM "normal data" sectors are 2048 bytes, not 512.
Yes, it is backwards. You wont find many IDE drives that support 512 byte
sectors, and not even all SCSI drives do.
The bugs is in the SCSI CD-ROM driver, it doesn't properly handle
requests smaller than 2048 per block. So yes it is a known bug.
-- * Jens Axboe <axboe@suse.de> * SuSE Labs- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Tue Aug 15 2000 - 21:00:21 EST