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Unmount cdrom

Marc Godbout
Occasional Visitor

Unmount cdrom

(Have read 9/27 "umount cdrom" post below)

Unable to umount /cdrom on 10.20 system.
Mssg returned is: "umount: cannot find /cdrom in /etc/mnttab. cannot umount /cdrom".

Cmd "fuser -cu /cdrom" returns mssg:
"/cdrom: fuser: could not find file system mounted at /cdrom."

When attempt is made to mount to /cdrom2, mssg returned is: "/dev/dsk/c1t2d0: Device busy".
Cmd used to mount: /etc/mount -F cdfs -o ro,cdcase /dev/dsk/c1t2d0 /cdrom.

No entry for /cdrom exists in bdf, fstab or mnttab.
System is in single-user mode. No other users are on.
System has been rebooted several times.

All suggestions appreciated.



5 REPLIES
Uday_S_Ankolekar
Honored Contributor

Re: Unmount cdrom

Hello,

Check for pfs daemon is running

ps -ef | grep pfsd
ps -ef | grep pfs_mountd.. If you find any kill the process.

Try mounting it by then using nohup

nohup /usr/sbin/pfs_mountd&
nohup /usr/sbin/pfsd&
/usr/sbin/pfs_mount -t rrip -x unix /dev/dsk/ Your device /cdrom
I assume this was not a remote mount.

Good luck
-USA..
Good Luck..
harry d brown jr
Honored Contributor

Re: Unmount cdrom

A great tool to use to determine what processes have what files open is "lsof". You can download it from here:

http://hpux.connect.org.uk/hppd/hpux/Sysadmin/lsof-4.55/

Live Free or Die
Bill Hassell
Honored Contributor

Re: Unmount cdrom

If the mount command reports that /cdrom is not mounted, then it isn't, especially in single user mode where pfs is not running (I am assuming by single user mode that you did not use init s or shutdown 0, neither of which work correctly for single user).

If you are trying to umount the CDROM because it won't eject, try a shutdown -h 0 and then cycle power. If that does not work, the CD is physically stuck. You can use a paperclip to poke into the small hole on the front panel. If that does not eject the CD, it will have to be replaced.


Bill Hassell, sysadmin
Wodisch
Honored Contributor

Re: Unmount cdrom

Hello Marc,

IIRC then there was the option "-u" for "mount" still
available in HPUX 10.20...
Try "mount -u" and then look for the output of "mount".
Is the cdrom still shown as mounted?
Then you might have to reboot, actually.

Else try "diskinfo" on that cdrom-drive's HW PATH, and/or
try "dd" or even "tar" on its device file (get the file
name from "ioscan -fnkC disk").

Is there a CD in or not?

Just my ?0.02,
Wodisch
Marc Godbout
Occasional Visitor

Re: Unmount cdrom

Have exhausted all sw solutions. At this point it appears to be hardware-related. Swapping out the drive 10/8. Will post results.