Conference turris::digital_unix

8729.0. "Can't open cd device" by PTHRED::VIVENEY (Bob Viveney) Wed Feb 05 1997 15:06

Hi
        I have a AlphaStation 600 5/266. Firmware rev is 6.0.
        The internal cdrom is an RRD45. Unix version is 4.0B (rev 564).

        The CD rom drive seems to work intermittently. Sometimes a
                mount -o ro /dev/rz5c /cdrom
        will work and sometimes (usually) it won't.

        Also, sometimes xmcd will work but usually not.
        I've tracked it (xmcd) down to the open() call
                open("/dev/rrz5c", O_RDWR)
        which either works or takes a long time to fail with
        error "No such device or address".

        The device is ...

        8 fxrp> ll /dev/rrz5c
        crw-------   1 root     system     8,5122 Feb  3 14:21 /dev/rrz5c

        Any ideas?

        - Bob

It doesn't matter if I try to open as root for r/w or if
I change perms on the device to allow r/w by group and other or if
I try to open as read only. They all *usually* fail after a long
wait.