topic Re: Unmounting the CD Rom in Operating System - HP-UX

Unmounting the CD Rom

Simon R Wootton — Wed, 17 Apr 2002 12:41:17 GMT

I have a HP9000 N class system running HPUX 11.00. Currently, the system thinks the disk is mounted, however, the tray opens and we can swap the disk but obviously unable to re-mount it. I thought there was a way to force an unmounting (umount -F ..??) but apparently not - all suggestions welcome. There are no users using the CD.

Re: Unmounting the CD Rom

Hai Nguyen_1 — Wed, 17 Apr 2002 12:54:31 GMT

Can you run

fuser -cu

to see if any process is occupying it?

Or look into /etc/mnttab to see if there is an entry for the CDROM in there. If found, delete the line, save the file and you should be all set.

Hai

Re: Unmounting the CD Rom

pap — Wed, 17 Apr 2002 12:55:08 GMT

Hi,
If the system thinks that the CDROM device is mounted, then edit the file /etc/mnttab and delete the file system entry for CDROM device.

Once this is done, then try to mount the CD again.

This should work.

-pap

Re: Unmounting the CD Rom

John Strang — Wed, 17 Apr 2002 12:59:45 GMT

Hi Simon,

Does the "mount" command show the CD as being mounted?

If so, what happens when you try to umount it?

Check file /etc/fstab to ensure the CD is not specified as being mounted by default - also check /etc/mnttab which shows which filesystems are currently mounted.

HTH,

John

Re: Unmounting the CD Rom

sudhir_3 — Thu, 18 Apr 2002 02:45:32 GMT

Hi
check the mount point by
fuser command
fuser -u mount point
if it shows process running with this mount point than use
fuser -uk mount point. probably mount point will be released and you will be able to mount another cd

sudhir

Re: Unmounting the CD Rom

Tom Geudens — Thu, 18 Apr 2002 03:59:13 GMT

Hi,
How exactly was the CD originally mounted ? If it was a pfs_mount instead of an ordinary mount ... I'm afraid you'll need a reboot to solve the problem.

Regards,
Tom

Re: Unmounting the CD Rom

SS_6 — Mon, 22 Apr 2002 01:51:01 GMT

Try power cycle CDROM only.

Re: Unmounting the CD Rom

Mateja Bezjak — Mon, 22 Apr 2002 07:51:20 GMT

Hi,

I had a similar problem once. I solved it by rebooting the system.

Regards,
Mateja

Re: Unmounting the CD Rom

Simon R Wootton — Mon, 22 Apr 2002 07:52:34 GMT

Thanks to all who responded, the only solution in the end was a reboot.