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I have dual boot and I keep all my data in separate partition and now I am not able to open that partition in freya.

  • Is the partition displayed in the file manager at all, in the sidebar or computer directory? Does it display any error message? Sometimes mounting can take several minutes for large disks that are slightly corrupted, have you tried simply waiting a while? – Lewis Goddard Aug 2 '15 at 10:46
  • Which is your second operating system? I'm assuming it's Windows, but I'm interested in which version of Windows are you dual booting with. – r3bl Aug 2 '15 at 13:07
4

If you are using Windows 8:

  • Go to Control Panel > Hardware and Sound > Power Options > System Settings or search on the main menu power options enter image description here

  • Choose Change what the power buttons do

  • Press Change settings that are currently unavailable enter image description here

  • Uncheck Turn on fast start-up. enter image description here

This should avoid any problems in the future with unmountable partitions. For safety, shutdown your windows with your Ctrl key pressed, it forces a regular shutdown.

If that doesn't fix the issue, that's when you should follow Dusan's indications.

if you don't change this setting in your Windows you might run into this issue everytime you boot into elementary OS coming from Windows.

Source and pics: Dual Mount issues

One of the many accounts I've seen of corruptions happening after ntfsfix: Don’t use ntfsfix in Linux, just turn off Fast Boot in Windows

1

If you are using Windows 8 and later, you might be experiencing problems like that if you didn't shut down Windows correctly.

Anyhow, try this:

1) find your partition with sudo fdisk -l under device column(something like /dev/sda1)

2) sudo ntfsfix /dev/sda1

3) Try to mount it again

  • 2
    Forcing the mount of an hibernated partition could possibly ruin data on the disk, does ntfsfix take that into account or does it simply force the partition to allow mounting? – John Guerreiro Aug 2 '15 at 11:10
  • From ntfsfix man page: ntfsfix is a utility that fixes some common NTFS problems. ntfsfix is NOT a Linux version of chkdsk. It only repairs some fundamental NTFS inconsistencies, resets the NTFS journal file and schedules an NTFS consistency check for the first boot into Windows. You may run ntfsfix on an NTFS volume if you think it was damaged by Windows or some other way and it cannot be mounted. – Dušan Gvozdenović Aug 2 '15 at 11:13
  • I've seen more complaints of it but this is one of them: sudopacman.wordpress.com/2015/01/09/… – John Guerreiro Aug 2 '15 at 11:24
  • Turning off fast start-up is definitely a good thing when you use both Windows and Linux. I cannot prove that it's perfectly safe in any situation but I have been using it for a very long time in cases like this and haven't ran in any kind of problems. – Dušan Gvozdenović Aug 2 '15 at 11:58

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