How to rename a partition in OS X?

Question

I'm able to erase a partition using the Disk Utility, but I want to change the name without losing data. How is it possible?

Answer 1

To rename the volume, enter the following in Terminal:

/usr/sbin/diskutil rename oldname newname

for example:

/usr/sbin/diskutil rename "Macintosh HD" "Mac Disk"

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You can also right-click a partition in Finder (in Computername at the top level of the hierarchy), select Get Info, and enter the new name there.