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Thread: Mounting encrypted home directory AFTER Knoppix booted up

  1. #1
    Junior Member
    Join Date
    May 2008

    Mounting encrypted home directory AFTER Knoppix booted up

    Hey guys. I've been searching this topic everywhere but was unable to find the proper command or steps.
    What I am looking to do is to mount the Knoppix encrypted home directory after knoppix already booted up, and when it scanned for the home dir during boot it wasn't there. Or may be adding additional usb drive after it is booted with encrypted knoppix.img and mounting it as an additional volume or directory.
    Thanks in advance.

  2. #2
    Junior Member
    Join Date
    May 2009
    I would also like to be able to do this, and can't seem to find a solution. But forget the encryption for a moment --
    even less than that would be to be able to boot from the live CD, and then mount a home partition from a usb drive (one could at least encrypt files on the home partition).

    But this functionality seems to have been lost in 6.0. You can create a persistent home directory if you install knoppix to flash or a hard drive, but not from the live cd. There is an undocumented cheatcode knoppix_dir=blah, where blah could be the flashdrive containing a different microknoppix version, but I only want the settings and home directory to be on the flashdrive, not the entire version of the micropknoppix....

    One might hope that something like "home=/dev/hdb1/knoppix_data.img" might work, with knoppix_data.img being what has now replaced knoppix.img in 6.0, but this doesn't seem to work either. Frustrating! And no documentation on this change from 5 to 6.0

    Anyone figured this out?

  3. #3
    Junior Member
    Join Date
    May 2009
    Usually /etc/init.d/cryptdisks and /etc/init.d/cryptdisks-early would be started by the started systemV init scipt. But I notice in /etc/inittab, that KNOPPIX is bypassing the usual systemV init and instead calling /etc/init.d/knoppix-autoconfig. The problem with changing this script, is that it is run after home is already mounted. It looks like the mounting is instead done in an init script which is found in /boot/minirt.gz. I'm guessing you need to modify this as described here:
    and add "/etc/init.d/cryptdisks start" and "/etc/init.d/cryptdisks-early start" before this script runs "findknoppix devices".
    This should hopefully ask you to enter your password, and decrypt the usbstick.

    To have a home directory there, I'm guessing you need to put the file knoppix-data.img on it (this is created as part of the knoppix flash utility from the knoppix menu) and is found in /KNOPPIX of the usbstick. Then the above init file probably has to be modified to find the knoppix-data.img (since it won't be in /KNOPPOX).

    Let me know if that works!

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