Very Computer

> Dear Linux users,

> I've just installed Linux.  Mounted my floppy with:  mount /dev/fd0
> /mnt/floppy.   Then I was able to read files on the floppy.  But when I
> tried to unmount it with:  umount /dev/fd0  (or umount /mnt/floppy) I
> got the message:  "Device is busy."  Looking up umount in the man pages
> gives the impression that the problem here is that the files I read are
> still "open."

> I've just installed Linux.  Mounted my floppy with:  mount /dev/fd0
> /mnt/floppy.   Then I was able to read files on the floppy.  But when I
> tried to unmount it with:  umount /dev/fd0  (or umount /mnt/floppy) I
> got the message:  "Device is busy."  Looking up umount in the man pages
> gives the impression that the problem here is that the files I read are
> still "open."  But I see no instructions on how to close them (or how to
> get a list of all files currently "open" in the system).
>     How do you do these simple things?  What happens if you logout,
> WITHOUT successfully umounting file systems or partitions that you've
> mounted?
>     Thanks for any help here -- RichM

> > Dear Linux users,

> > I've just installed Linux.  Mounted my floppy with:  mount /dev/fd0
> > /mnt/floppy.   Then I was able to read files on the floppy.  But when I
> > tried to unmount it with:  umount /dev/fd0  (or umount /mnt/floppy) I
> > got the message:  "Device is busy."  Looking up umount in the man pages
> > gives the impression that the problem here is that the files I read are
> > still "open."

> Something to check:  Are you (or other users) still in the directory
> /mnt/floppy or any directory below that?  If so, you can't umount the
> floppy, as you're still in the floppy's directory and therefore still
> using the filesystem.  cd to another directory, like /home/myhome, and
> try it.  (I got burned by this many times...)

> >  But I see no instructions on how to close them (or how to
> > get a list of all files currently "open" in the system).

> To get a list of all open files, use the lsof command.  I think it
> should come as an optional package to install on most distros; if not,
> it's on Freshmeat somewhere as an RPM and a tarball...

> >  What happens if you logout,
> > WITHOUT successfully umounting file systems or partitions that you've
> > mounted?

> They remain mounted until the user umounts them or root umounts them.
> This is a feature. :-]

> >> > Dear Linux users,

> >> > I've just installed Linux.  Mounted my floppy with:  mount /dev/fd0
> >> > /mnt/floppy.   Then I was able to read files on the floppy.  But when I
> >> > tried to unmount it with:  umount /dev/fd0  (or umount /mnt/floppy) I
> >> > got the message:  "Device is busy."  Looking up umount in the man pages
> >> > gives the impression that the problem here is that the files I read are
> >> > still "open."

>     I had a umount problem with my CDROM, try typing 'sync' to flush the
> buffers. In my case the terminal would hang when you did that (it shouldn't)
> and that was why I couldn't umount the CD drive, in another terminal ps -aux
> showed a D dead process for both sync and umount. That was with RH 6.01, after
> reinstalling from scratch it worked?  Mysteries abound.

>                                                                 -John

> PS. I know people say that all you do is install and away you go, but I've
> found that after a couple installs all the bugs and querky
> intermittent errors go away.

>> >> > Dear Linux users,

>> >> > I've just installed Linux.  Mounted my floppy with:  mount /dev/fd0
>> >> > /mnt/floppy.   Then I was able to read files on the floppy.  But when I
>> >> > tried to unmount it with:  umount /dev/fd0  (or umount /mnt/floppy) I
>> >> > got the message:  "Device is busy."  Looking up umount in the man pages
>> >> > gives the impression that the problem here is that the files I read are
>> >> > still "open."

>>     I had a umount problem with my CDROM, try typing 'sync' to flush the
>> buffers. In my case the terminal would hang when you did that (it shouldn't)
>> and that was why I couldn't umount the CD drive, in another terminal ps -aux
>> showed a D dead process for both sync and umount. That was with RH 6.01, after
>> reinstalling from scratch it worked?  Mysteries abound.

>>                                                                 -John

>> PS. I know people say that all you do is install and away you go, but I've
>> found that after a couple installs all the bugs and querky
>> intermittent errors go away.

>--


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