Re: set speed for Toshiba CDROM drive ?

Jochen Karrer (
Thu, 7 Aug 1997 18:35:07 +0200 (MET DST)

> does anyone know how to set the media speed (1x, 2x, 6,7x) for
> TOSHIBA XM-3701 cdrom drive ? I'd like to have some ioctl() or similar
> where I can redure the speed to 2x or 1x when I get read/positioning errors
> for flaky CDR disks.

There is a SCSI-Command SET-CD-SPEED (0xbb). I never tried, because
I have no SCSI CDrom.
> did anyone already implement this ?
Take any tool which accesses the generic SCSI-Interface
( ziptool.c, hpscanpbm.c, coolscan.c ) and add a
SCSI-Command 0xbb.

> or where can I get the information how to change the speed
> (which SCSI mode page and bytes/bits) ?

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