usb cdrw almost works?
David Efflandt
says is not quite according to its known configurations. 'lsusb'
identifies it as ID 07ab:fc01 Memorex BBQ Series 100 CD-R/RW.
/proc/scsi/scsi identifies it as:
Vendor: Model: CD-R/RW RW8040A Rev: 1.13
Type: CD-ROM ANSI SCSI revision: 02
And the file below /proc/scsi for this device shows it as:
Host scsi0: usb-storage
Vendor: Freecom
Product: USB-IDE
Serial Number: None
Protocol: QIC-157
Transport: Freecom
GUID: 07abfc010000000000000000
It sort of works for reading when the /dev/scd# is mounted as iso9660
cdrom, but sometimes hangs when accessing some files. From /dev/sg# (or
actual bus,id,lun), cdrdao can read 'disk-info' as generic-mmc, but
'read-toc' gets as far as reading the song list, then hangs attempting to
check the tracks.
When I set up my ATAPI dvd-cd with scsi emulation, I was able to read
everything from a music cd (cdrdao read-cd...) with that drive.
Attempting to write that same data to the cd writer (cdrdao simulate...)
did its preliminary steps up to filling the buffer, then locked up trying
to write.
Likewise cdrecord -dummy... recognized the drive and media, but locked up
attempting to write an iso image (same Linux iso file successfully written
to cd-r in Windows).
Details about what I tried so far, including usb-storage debug info,
is at http://www.de-srv.com/linux/vst-cd.html
One thing that puzzles me is the QIC-157 (tape) protocol. Makes me wonder
if I need to record like a tape drive.
Is anyone familiar with this drive or how to determine if the hangup is in
usb-storage or scsi support (it sometimes totally locks up Linux)? Or
what info can I provide about this drive to the module maintainers to
support this drive?
--
David Efflandt effl...@xnet.com http://www.de-srv.com/
http://www.autox.chicago.il.us/ http://www.berniesfloral.net/
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