Specifications
Under various circumstances SCSI devices dis− and reconnect themselves (electronically) from the SCSI bus.
If this feature is not available (check controller and kernel parameters) some writers run into trouble during
burning or fixating the CD−R.
Especially the NCR 53c7,8xx SCSI driver has the feature disabled by default, so you might want to check it
first:
NCR53c7,8xx SCSI support [N/y/m/?] y
always negotiate synchronous transfers [N/y/?] (NEW) n
allow FAST−SCSI [10MHz] [N/y/?] (NEW) y
allow DISCONNECT [N/y/?] (NEW) y
5.5 Medium errors If cdrecord reports medium errors in the
form of"Sense Key: ... Medium Error, Segment ...", then the
mediumis not empty. If you use CD−RW, then try to switch
fromblank=fast to the more reliable blank=all. If you use
CD−Ronly, then make sure the CD−R has never seen a
CD−writer beforeor try out discs from another
manufacturer.
5.6 Newly written CDs are not readable on some players.
Some people reported problems with playing their self−written CDs. Very old audio players or car devices
can have problems with CD−Rs, although this is extremly rare. Quite frequent are problems with CD−RWs,
because they don't reflect the laserlight as good as CD−Rs and factory−pressed "silver" discs.
5.7 My scanner stopped working after I loaded the ide−scsi
module
By inserting the SCSI−hostadaptor emulation, the naming of SCSI devices changes. If your scanner was
/dev/sg0 before, it might be /dev/sg1 or /dev/sg2 now. Prominent kernel developers did not think this is
completely braindead and denied solutions like devfs in the past. But that is another story, the first thing you
should try is to set the link /dev/scanner to point to the actual generic SCSI device. Examples:
CD−Writing HOWTO
5.5 Medium errors If cdrecord reports medium errors in the form of"Sense Key: ... Medium Error, Segment ...", then the mediumis not empty. If you use CD−RW, then try to switch fromblank=fast to the more reliable blank=all. If you use CD−Ronly, then make sure the CD−R has never seen a CD−writer beforeor try out discs from another manufacturer.34