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I would like to stop Ubuntu from mounting my other (Windows') partitions automatically (since I do not need it really often - and especially I would like not to automount "System reserved" partition for Windows.

There is a similar question here

How can I stop Ubuntu 12.04 from mounting Fedora 16's Swap Partition? but!

I do not have these partitions added in /etc/fstab.

How can I do it ?

For proof, my /etc/fstab

proc            /proc           proc    nodev,noexec,nosuid 0       0
# / was on /dev/sda7 during installation
UUID=1384cee0-6a71-4b83-b0d3-1338db925168 /               ext4    errors=remount-ro 0       1
# swap was on /dev/sda6 during installation
UUID=e3729117-b936-4c1d-9883-aee73dab6729 none            swap    sw              0       0
#------ MY WINDOWS D DRIVE---------- I WANT TO KEP IT
UUID=98E8B14DE8B12A80                   /media/d            ntfs    defaults,errors=remount-ro  0   0
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1 Answer 1

up vote 6 down vote accepted

The solution is to add them to /etc/fstab, but with options to prevent them from being automatically mounted. The option you want is noauto rather than auto. For example, to prevent a windows partition from being mounted, you could add an entry like the following:

UUID=C2A281E4A281DCF3 /media ntfs-3g defaults,noauto 0 0

You can run blkid to retrieve the partition UUID:

sudo blkid

See "Using UUID" in the Ubuntu Docs.

Or, to make it more self-documenting and simpler, although not quite as fail-proof, I have switched to using disk labels rather than UUIDs. You just need to make sure the label is descriptive and unique; unlike using UUIDs, labels are not guaranteed to be unique, but I've never run into a problem, and it's more convenient, as you can swap a different partition by using the same label, and no need to modify /etc/fstab, or to run blkid.

Contrast the above entry with this one:

LABEL=Win_sys   /media     ntfs-3g   defaults,noauto   0  0

A good explanation of fstab options can be found on the ArchWiki and on the Ubuntu Docs.

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