Basics
There are 6 programs used to label a partition - the program used depends on the partition's filesystem type:
For FAT16 and FAT32 partitions, use mtools.
For NTFS partitions, use ntfsprogs.
For ext2, ext3, or ext4 partitions, use e2label.
For JFS partitions, use jfs_tune.
For ReiserFS (v3) partitions, use reiserfstune.
For XFS partitions, use xfs_admin
By default, external drives automount at /media/disk then /media/disk-1 and so on. This is not very helpful when trying to find the drive you are looking for, especially if you have multiple devices plugged in.
When creating labels, be sure that the new mount point (based on the label) does not already exist since hal's automount function creates the directory when it mounts the device.
This guide is primarily for external drives such as USB hard drives, USB flash drives, and flash memory cards. You can label internal disks, but to change their mount points, use MoveMountpointHowto which uses the file called Fstab.
Identify your Partition
Plug in your USB device and list your partitions with:
sudo fdisk -l
You can also list your mounted devices and their descriptions with:
mount
For the rest of this tutorial we will use the following:
<device> = your device /dev/sdxy, ex: /dev/sdb1
<label> = your desired (new) label, ex: my_external
Install the Labeling Program
Based on the package names listed above for each filesystem type, install the correct package for your partition:
sudo apt-get install <package>
Here are all the different ones:
sudo apt-get install mtools sudo apt-get install ntfsprogs sudo apt-get install e2fsprogs sudo apt-get install jfsutils sudo apt-get install reiserfsprogs sudo apt-get install xfsprogs
or install the appropriate package from Synaptic.
Unmount the Partition
Partitions generally need to be unmounted before you can fiddle with them, so unmount the partition of the device you want to change the label for:
sudo umount <device>
ex:
sudo umount /dev/sdb1
If it was automounted, you can also unmount the drive by right clicking the desktop icon and clicking Unmount (or Eject in some cases).
Changing the Label
After you complete the appropriate porition for your filesystem, jump to the next section to verify the change.
FAT16 and FAT32
These filesystems are most often found on USB thumb drives, flash cards (like for a camera or cell phone), and older external USB hard drives.
Check the current label
sudo mlabel -i <device> -s ::
ex:
sudo mlabel -i /dev/sdb1 -s ::
Note that we're using the special "::" drive which allows us to specify the device descriptor on the command line; otherwise we'd have to edit ~/.mtoolsrc to assign a drive letter (see Option 2 under "Change the label").
Change the label
Option 1
After unmounting and checking the current label (above), use
sudo mlabel -i <device> ::<label>
ex:
sudo mlabel -i /dev/sdb1 ::my_external
Ignore the "Volume label is XYZ" output as this is the old label. Jump to the Verify the Change section below.
Option 2
For Ubuntu 8.10 and up, edit mtools.conf as sudo
sudo nano /etc/mtools.conf
add something like for each drive:
drive p: file="/dev/sdb1" drive q: file="/dev/sdb2"
etc.
Then use
sudo mlabel p:new_label
ex:
sudo mlabel p:30GB_FAT32
(note the underscore _ should be used, as spaces are not allowed)
http://ubuntuforums.org/showpost.php?p=6356016&postcount=9
Error message
If you get a message like this:
Total number of sectors (7831520) not a multiple of sectors per track (63)!
You can easily ignore the check by running this command:
echo mtools_skip_check=1 >> ~/.mtoolsrc
NTFS
This filesystem is most often found on external USB and firewire hard drives or other Windows formatted disks.
Check the current label
sudo ntfslabel <device>
ex:
sudo ntfslabel /dev/sdb1
Change the label
Note: 128 characters maximum.
sudo ntfslabel <device> <label>
ex:
sudo ntfslabel /dev/sdb1 my_external
Ubuntu caches the drive's label so to see full affects of the change it is not enough just to umount and mount it again, the you should umount, remove, put back, mount again.
ext2, ext3, and ext4
These filesystems are most often found on linux formatted drives.
Check the current label
sudo e2label <device>
ex:
sudo e2label /dev/sdb1
Change the label
Note: 16 characters maximum.
sudo e2label <device> <label>
ex:
sudo e2label /dev/sdb1 my_external
JFS
These filesystems are most often found on IBM and some linux formatted disks.
Check the current label
sudo jfs_tune -l <device>
ex:
sudo jfs_tune /dev/sdb1
Change the label
Note: 16 characters maximum.
sudo jfs_tune -L <label> <device>
ex:
sudo jfs_tune -L my_external /dev/sdb1
ReiserFS (v3)
This filesystem is most often found on linux formatted disks.
Note: this could work with ReiserFS 4 too, I have not tried.
Change the label
Note: 16 characters maximum.
sudo reiserfstune -l <label> <device>
ex:
sudo reiserfstune -l my_external /dev/sdb1
XFS
This filesystem is most often found on UNIX formatted disks.
Check the current label
xfs_admin -l <device>
ex:
xfs_admin -l /dev/sdb1
Change the label
Note: 12 characters maximum.
sudo xfs_admin -L <label> <device>
ex:
xfs_admin -l my_external /dev/sdb1
Verify the Change
Now for the easiest part: unplug the drive, wait a second, then plug it back in. It should appear on your desktop with the new label and have its new mount point.
Without unplugging and having the device remount, you can also just run:
sudo blkid
Other Resources
