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Thread: Mounting windows particions R/W

  1. #1
    Join Date
    Aug 2009
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    17

    Exclamation Mounting windows particions R/W

    Hello everyone,

    I am going slightly mad at trying to get my windows 'data' particion to work read/write in Ubuntu 10.10.

    I have been changing fstab. I can change options and remount the particion. For a while it works! I can change files and create folders, but it works only in the terminal. I promise this is the strangest thing that has ever happened to me! I can create test documents and folders right when I remount my drive in the terminal, but the second I open a folder (with the GUI: AltF2 .. /dos/ )and try the same it blocks everything returning the disk to 'read-only' mode? Going back to terminal (even in SUDO mode!!) blocks every write action!
    I.e, it spits out

    mkdir: cannot create directory `test4': Read-only file system

    Any idea why this happens!?

    Here's my fstab line on the problematic disk:

    #Entry for /dev/sda4 :
    UUID=E51F-9C31 /dos vfat uid=1000,umask=000,gid=100,users,rw 0 0

    Here's the result of fdisk -l

    /dev/sda4 9292 14594 42584064 b W95 FAT32


    Apparently 0x0b FAT is ancient but would that help?? Not sure I want to try changing that in case it screws up windows and data stored...

    Mount command returns:

    /dev/sda1 on /XP type fuseblk (rw,nosuid,nodev,allow_other,blksize=4096)
    pedrito@pedros-HPdv6120:~$ mount
    /dev/sda3 on / type ext4 (rw,errors=remount-ro,commit=0)
    proc on /proc type proc (rw,noexec,nosuid,nodev)
    none on /sys type sysfs (rw,noexec,nosuid,nodev)
    fusectl on /sys/fs/fuse/connections type fusectl (rw)
    none on /sys/kernel/debug type debugfs (rw)
    none on /sys/kernel/security type securityfs (rw)
    none on /dev type devtmpfs (rw,mode=0755)
    none on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
    none on /dev/shm type tmpfs (rw,nosuid,nodev)
    none on /var/run type tmpfs (rw,nosuid,mode=0755)
    none on /var/lock type tmpfs (rw,noexec,nosuid,nodev)
    binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev)
    gvfs-fuse-daemon on /home/pedrito/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev,user=pedrito)
    /dev/sda1 on /XP type fuseblk (rw,nosuid,nodev,allow_other,blksize=4096)
    /dev/sda4 on /dos type vfat (rw,noexec,nosuid,nodev,uid=1000,umask=000,gid=100 ,utf

    There are some errors above but don't seem related to "/dos" are they?

    I am going insane! I released the disk from any windows business by shutting it down properly.

    I am just about to reformat this particion to NTFS!
    But I have come this far: HEEEELP

    Thanks!

  2. #2
    Join Date
    Jun 2009
    Location
    Chicago Suburbs
    Beans
    Hidden!
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Mounting windows particions R/W

    Please do not keep opening threads on the same issue.

    See also
    Changing read/write permissions of file-system folder?
    http://ubuntuforums.org/showthread.php?t=1945155
    this referred to a Mac?
    Help with changing permissions on an external drive?
    http://ubuntuforums.org/showthread.php?t=1946755

    I am closing other threads.

    Ownership and permissions of vfat / ntfs are set at the time of mounting. This is often a source of confusion.
    http://www.psychocats.net/ubuntu/mountwindowsfstab
    HOWTO: Mount NTFS partitions with specific ownership/permissions - WorMzy
    http://ubuntuforums.org/showthread.php?t=1604251
    For info on UEFI boot install & repair - Updated Mar 2015:
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to close thread when/if answered completely.







  3. #3
    Join Date
    Aug 2009
    Beans
    17

    Talking Re: Mounting windows particions R/W

    Sorry about the multiple post, I only did so in an attempt of reaching a larger audience. It won't happen again.

    My problem is not with a Mac.
    My problem is not with NTFS, but with FAT32.
    My problem is with a static disk partition not an external drive.

    I repeat my question: why does the Ubuntu GUI change the read-write permissions of the disk when the terminal had everything working? See command responses and fstab line above, they are seemingly RW friendly, what am I doing wrong?!

    Thanks!
    Pdp

  4. #4
    Join Date
    Jun 2009
    Location
    Chicago Suburbs
    Beans
    Hidden!
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Mounting windows particions R/W

    I do not think it is the issue but your gid is 100? should be 1000?

    Post your fstab:

    This is my mount & fstab from years ago. I have not mounted my FAT partition for ages as I lost a lot of large files. FAT does not support files over 4GB, so I converted to NTFS for the partition I share data with XP.

    Did you look at the instructions in the psychocats link above? The only real difference is drives are now sda not hda.

    My old mount from a run (maybe my first) of boot_info script 3 or 4 years ago.
    Code:
    /dev/sda4 on /home/fred/share type vfat (rw,noexec,nosuid,nodev,fmask=0111,dmask=0000)
    
    # before uuid  /dev/sda4 /home/fred/share vfat user,auto,fmask=0111,dmask=0000 0 0
    UUID=46CD-C9B2 /home/fred/share vfat user,auto,fmask=0111,dmask=0000 0 0
    For info on UEFI boot install & repair - Updated Mar 2015:
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to close thread when/if answered completely.







  5. #5
    Join Date
    Aug 2009
    Beans
    17

    Re: Mounting windows particions R/W

    Hi again,

    I have tried everything, (psycho cats and your lines) still no luck. Again terminal seems OK but the GUI somehow reverses partition to read-only.

    I have decided to just reformat to NTFS, will keep you updated on how that one works!
    Cheers

  6. #6
    Join Date
    Aug 2009
    Beans
    17

    Wink Re: Mounting windows particions R/W

    Halleluyah!

    I formatted my disk NTFS and with 3g it works like a charm!

    From my experience, I don't think Ubuntu should recommend people to format their 'share with windows' drives as FAT32. It is ancient, less efficient than NTFS, and most importantly not fool-proof

    I feel the problem was that I started playing around with chmod first and somehow told ubuntu - the Gui=GNOME?- that the system was read-only. The recently mounted drive would work great in the terminal, but once GUI rw was attempted, it would switch back to read-only mode.

    Thanks a lot you for your time and feedback!
    Pdp

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