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Thread: truecrypt: "mount: you must specify the filesystem type"

  1. #1
    Join Date
    May 2008
    Location
    UK
    Beans
    37
    Distro
    Ubuntu 10.04 Lucid Lynx

    Thumbs down truecrypt: "mount: you must specify the filesystem type"

    I downloaded truecrypt for ubuntu, unzipped it and installed it as a deb package. Installed python-pexpect from Synaptic too. I created a file container for an encrypted volume ("kryptonite") as a standard truecrypt volume in my home folder. I chose "none" instead of "FAT" for the filing system, assuming this would create the encrypted volume in ext3 on my ubuntu partition. When I try to mount the volume, it says I must specify the file system type, but there is no toolbar option to do this.

    I don't know why there's a red grinning face next to my thread title!
    Last edited by pranayama; September 13th, 2008 at 12:23 PM. Reason: make question clearer

  2. #2
    Join Date
    Apr 2006
    Beans
    14
    Distro
    Ubuntu 8.04 Hardy Heron

    Re: truecrypt: "mount: you must specify the filesystem type"

    You cannot mount the volume because although you have created a truecrytp volume you do not have a filesystem (because you chose none instead of FAT32).

    Click on the mount button enter the relevant passwords (you may get asked for the volume's encryption password and your administrative password). Click to options button and check the do not mount box.

    Truecrypt has now made the volume available and you can make a files system.

    If you container is /home/user/truecrypt you can now make it the files system of your choice eg for ext3 type:
    mke2fs -j -m 0 /home/user/truecrypt

    If using mke2fs you will get a warning that this is not a block device do you want to continue: chose y.

    You now have a files system within a truecrypt container.

    Usually after creating file systems I find you need to reboot.

    After a reboot open Truecrypt and you should be able to mount the volume.

  3. #3
    Join Date
    Apr 2006
    Beans
    14
    Distro
    Ubuntu 8.04 Hardy Heron

    Re: truecrypt: "mount: you must specify the filesystem type"

    sorry. Been a while since I last created a volume and I rememebred that slightly wrong.
    After mounting the volume with the do not mount file system click on the volume menu and choose volume properties. THis will give you the virtual device of the volume and this is what you make the file system on.

    eg instead of mke2fs -j -m 0 /home/user/truecrypt

    it will be something like

    mke2fs -j -m o /dev/loop0

    Then you umount in truecrypt and then remount without checking the do not mount filesystem box

  4. #4
    Join Date
    Sep 2008
    Beans
    12

    Talking Re: truecrypt: "mount: you must specify the filesystem type"

    Thanx - this info was very useful (& allows me to use any linux filesystem I want instead of just being stuck with FAT32!)

  5. #5
    Join Date
    Feb 2013
    Beans
    8

    Re: truecrypt: "mount: you must specify the filesystem type"

    I have the same problem when I tried the suggest solution I get this in terminal:

    "mke2fs: Permission denied while trying to determine filesystem size"

    Any idea how I can get mke2fs to run and not get this message?

  6. #6
    Join Date
    Jul 2007
    Location
    Magic City of the Plains
    Beans
    Hidden!
    Distro
    Xubuntu 17.10 Artful Aardvark

    Re: truecrypt: "mount: you must specify the filesystem type"

    If a post is older than a year or so and hasn't had a new reply in that time, instead of replying to it, create a new thread. In the software world, a lot can change in a very short time, and doing things this way makes it more likely that you will find the best information. You may link to the original discussion in the new thread if you think it may be helpful.

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