Parted and Gparted when asked to expand a partition fail.   Gparted breaks
the system.
version (1.6.25.1)  Assertion (dev->open_count > 0) at
../../libparted/device.c:259 in function ped_device_read() failed.

More information
Can't open a terminal because  "There was an error creating the child
process  for this terminal"
Previously open terminals are not effected so here is what transpired before
the failure:
apt-get install gparted
ntfsprogs was not installed even though it was recomended.
 libglibmm-2.4-1c2a libgtkmm-2.4-1c2a were installed automatically by the
package manager.
# parted
Opened ok
hda3 and hda4 are locked.
hda4 is currently in use as boot and root according to /etc/fstab and hda3
should not be mounted
#quit
# umount /dev/hda3
#parted
Using /dev/hda
(parted) resize 3 241GB 250GB
Error: Partition /dev/hda3 is being used.  You must unmount it before you
modifyit with Parted.
(parted) quit
Information: Don't forget to update /etc/fstab, if necessary.

[EMAIL PROTECTED]:~# gparted
dumpe2fs 1.38 (30-Jun-2005)
Error: Could not stat device /dev/hdc - No such file or directory.
Error: Could not stat device /dev/hdc - No such file or directory.
Error: Could not stat device /dev/hdc - No such file or directory.
Error: Could not stat device /dev/hdc - No such file or directory.
Error: Could not stat device /dev/hdc - No such file or directory.
Error: Error opening /dev/hdc: No such file or directory
A bug has been detected in GNU Parted.  Refer to the web site of parted
http://www.gnu.org/software/parted/parted.html for more informations of what
could be useful for bug submitting!  Please email a bug report to
bug-parted@gnu.org containing at least the version (1.6.25.1) and the
following message:  Assertion (dev->open_count > 0) at
../../libparted/device.c:259 in function ped_device_read() failed.

Recent history.  Installed Ubuntu via default install.  It packs swap and
then root at the top of the system with free space below swap.  Swap with a
lot of memory should be at the top of the system in my opinion since more
swap partitions can be added at any time anywhere.  To facilitate such a
design root was moved to a new partition in lower faster memory using
knoppix v5.1 gparted.  Reboot of Ubuntu and an attempt to upgrade failed,
partition too small.  Both parted and fsdisk report the new patition and
size as correct.  Gparted locks both 3 and 4 so it appears that it has added
a link to 3 in 4 rather than moving the partition to 4.

I notice that parted is now stable at version 1.8.8 and Ubuntu is loading
1.6.25.1 so this may be a ubuntu bug.
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