Re: mount: no medium found ?

On Sun, 2003-09-14 at 02:24, James S. White wrote:
> I finally got the powerfile c200 jukebox to change disks. But now I cannot
> mount drives in the jukebox. Whenever I "mount /dev/scd0 /dvd/0" I get a
> "mount: No medium found" and the following in the kern.log:
>
> Sep 14 01:06:17 discovery vmunix: cdrom: open failed.
>
> Neither drive will mount on the jukebox under linux, but the same disks will
> mount when the jukebox is attached to a windows box running Powerfiles Media
> Explorer.
>
> I also compiled 2.4.22 with the subversion snapshot tarball:
> http://www.linux1394.org/viewcvs/ieee1394/branches/linux-2.4/ieee1394_2.4.tar.gz?tarball=1 from Sep 13 and had the same results.
>
> Does anyone have any insights on this?

You need to send a SCSI START_STOP_UNIT request with the eject option to
make it recognize new media. Then, send the same request as is (stop
unit?) to spin-down the media before transfering it out of the drive. If
you use the mtx utility, look at the mtxl.c:Eject() function. Set byte 4
to 2 for the eject option or set byte 4 to 0 for the stop option.

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Received on Mon Sep 15 16:30:22 2003