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Currently, I have a partition where Crunchbang is installed, which shows up as a folder in Mint named either 0d71227f-66fc-45ac-8bfc-93280b93dc8c or "10.0 GB Volume".

First question is, of course, wtf?

My main question is, however, how do I rename it to something less ridiculous? I tried renaming it as root, and I get the device is busy error.

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You can either label the partition or use x-gvfs-name= in /etc/fstab to display the partition under a certain name in the file manager, see here. – don_crissti Dec 7 '14 at 17:53

These names usually do not refer to the partition (which would make sense with LVM / DM only) but to the file system. Every file system (of certain types) has a UUID (0d71227f-66fc-45ac-8bfc-93280b93dc8c) but not everyone has a name. For ext3 and ext4 you can see the volume name with dumpe2fs -h /dev/whatever. You can set it with tune2fs -L.

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... or GParted. The "name" of the partition is called the label. – ignis May 1 '13 at 16:22
@ignis But that is valid for GPT partitions only, not for MBR partitions. – Hauke Laging May 1 '13 at 22:01
No, it's valid for both – ignis May 2 '13 at 5:38
@ignis Can you explain how that is supposed to work? Neither is room in the MBR partition table entries for a label nor do fdisk and sfdisk (apparently) offer you to set such a label. – Hauke Laging May 2 '13 at 12:10
You can edit labels in Gparted, and see them with blkid – ignis May 2 '13 at 12:26

In order to mount a partition, your file manager (Nautilus, Dolphin, Thunar) exec something like:

blkid /dev/sdaN

in which output appear the UUID "0d71227f-66fc-45ac-8bfc-93280b93dc8c" of that partition, the file manager use that UUID to create a temporal directory where is going to mount the partition. The UUID is unique so each partition will have a different one. Be careful in the N, since represent the partition number, always you can exec fdisk -l to know your partition table.

So to answer your question, you can create a directory like /media/CrunchbangDisk where you can mount manually your partition.

Here an example:

mkdir /media/CrunchbangDisk
mount /dev/sdaN /media/CrunchbangDisk

Also you can specify the partition type with, e.g. -t ext2 to the mount command.

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