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    SubjectRe: Linux 2.1.x IDE/ATAPI CDROM support
    Erik Andersen wrote:

    > On Mon, Aug 03, 1998 at 03:11:23PM +0200, Christian Viken wrote:
    > > Hi.
    > >
    > > I have since kernel 2.1.101 not been able to mount my Optics Storage 12X
    > > IDE/ATAPI CD-ROM.
    > > I have tried every kernel since then (current: 2.1.113)
    > >
    > > mount does not return any error messages, just halts the xterm i run it
    > > from and at system shutdown (after trying to mount the cd-rom and after
    > > killing the stalled xterm) the umounting process hangs infinitely.
    > >
    > > I have tried both the static and the module way of kompiling the kernel
    > > IDE CDROM driver and ISO9660 filesystem (every possible way) and I have
    > > also tried different versions of mount. Same result every time.
    > >
    > > Current system:
    > > RedHat 5.1
    > > mount-2.7l-3
    > > glibc-2.0.7-19
    > >
    > > With dmesg i get:
    > > -------------------
    > > VFS: Disk change detected on device 16:00
    > > ATAPI device hdc:
    > > Error: Unit attention -- (Sense key=0x06)
    > > Not ready to ready transition, medium may have changed -- (asc=0x28,
    > > ascq=0x00)
    > > -------------------
    >
    > With the latest kernel (2.1.113 or later) could you compile ide-cd in as
    > a module, and add:
    > options cdrom debug=1
    >
    > to your /etc/conf.modules.
    >

    Did that. (and compiled in ISO9660 and Joliet support (kernel 2.1.114))
    mount hangs. syslog says:

    Uniform CDROM driver Revision: 2.13
    cdrom: drive "/dev/hdc" registered
    cdrom: entering cdrom_open
    cdrom: entering open_for_data
    cdrom: drive_status=4
    cdrom: entering cdrom_count_tracks
    cdrom: wrong media type, but CDO_CHECK_TYPE not set.
    cdrom: all seems well, opening the device.
    cdrom: opening the device gave me 0.
    cdrom: door locked.
    cdrom: device opened sucessfully.
    cdrom: Use count for "/dev/hdc" now 1
    cdrom: entering CDROMMULTISESSION
    ATAPI device hdc:
    Error: Unit attention -- (Sense key=0x06)
    Not ready to ready transition, medium may have changed -- (asc=0x28,
    ascq=0x00)


    > You might also try out:
    > options cdrom debug=1 check_media_type=1

    Did that also. mount does not hang (cool :) but returns "wrong media type".
    the syslog says:

    Uniform CDROM driver Revision: 2.13
    cdrom: drive "/dev/hdc" registered
    cdrom: entering cdrom_open
    cdrom: entering open_for_data
    cdrom: drive_status=4
    cdrom: entering cdrom_count_tracks
    cdrom: bummer. wrong media type.
    cdrom: open failed.
    cdrom: door unlocked.
    cdrom: Use count for "/dev/hdc" now 0
    Uniform CD-ROM driver unloaded

    Did not help me much, but hope it helps you guys.

    I have tested with both ISO9660 and Joliet CDs. same result.

    -Chris

    --
    Christian Viken chrisvik@tapir.no, Zakka@irc
    Nardoveien 6 http://www.tapir.ntnu.no/~chrisvik/
    7032 Trondheim,Norway Phone: 73 94 53 18, Work: 73 59 84 78




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