I am no longer able to write on the data partition files in Ubuntu, due to a "read-only" message appearing.

I have 3 partitions: one has Ubuntu installed (1), one is for Win10 (2) (dual boot) and the 3rd (3) is for data storage.
Today I updated Win10 and I am no longer able to access the data storage (3) partition from Ubuntu. Usually this error appears when I access Ubuntu while Win10 is not shut down but hibernated. Instead this time the error appears even if Win10 is shut down!
I don't get what's going on. Any clue?


The Windows 10 update reseted it to the default fast startup which is a form of hibernation.

You need to disable this feature (again, probably) in Windows and then shutdown, not reboot. Once done properly you'll be able to access the data partition normally with read/write permissions.

The location of Fast Boot option in windows10

  • I have changed that option from windows and now it works, thanks.
    – danieleg91
    May 22 '17 at 10:20
  • 1
    This happened to me in the last month. It's really very sucky that Windows changes the setting back. It cost me quite a bit of time.
    – TooTone
    Apr 12 '18 at 9:09
  • I've had that setting off and it was still returning a Read Only message. The solution is the same as above, boot into Windows and perform a normal shutdown.
    – Francis
    Aug 11 '18 at 4:38
  • 1
    This option is disabled in my case, as I am using office laptop. Mar 10 '20 at 18:12
  • This has been bugging me for months now without any fix in site. This fixed it. Appreciate it. May 12 '20 at 11:55

Open the terminal and write the command

sudo fdisk -l

It will show your file system

identify the partition you want permission for read and write

then type the command and give the partition name like this to your specific sda

sudo ntfsfix /dev/sda3
  • If Windows hibernated, it's not a good idea to enforce read/write for a shared partition. -1
    – Pavel V.
    Oct 27 '20 at 16:38

You may encounter this filesystem error while in dual boot.

Sometimes the feature "Disable Fastboot" is prohibited to change by non-admin user by group policy restriction.

The below solution will help for all situations.

Login to windows, close all opened windows if any and execute following, from Run dialog

`shutdown /f /r /t 0`

/f Force running applications to close without forewarning users.

/r Full shutdown and restart the computer.

/t xxx Set the time-out period before shutdown to xxx seconds, here /t 0 for immediate shutdown.

  • For some reason, it didn't work for me with /t0 attribute. But thanks anyway, as "disable fastboot" is prohibited for me too, this was my only way to get back to my data partition.
    – Pavel V.
    Oct 27 '20 at 16:36

Windows is hibernated, refused to mount

Chances are that Windows really is hibernated. Windows does this automatically when you tell it to shutdown normally. The benefit is that you get a faster apparent start-up time.

To shutdown Windows without hybernating, issue the following at a command-prompt (in Windows):

shutdown /s

You might also want include /t 0 for immediate shutdown.

I found a nice tutorial to set up a launcher for this: How to Do a Full Shutdown in Windows 8 Without Disabling Hybrid Boot.

The simpler approach to actually shutting down Windows is to 'restart' (rather than 'shutdown'), but then intercept the boot process and boot Linux instead of letting it boot Windows.

credit: nobar


for me it was solution to restart from Linux go to windows, restart from windows and go bask to Linux. I guess windows did not close some permissions.

  • 1
    When you restart Windows from the login screen, the Windows won't suspend. That's why you were able to disable the fast boot by restarting the Windows.
    – Gui
    Apr 13 '20 at 12:18

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