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Thread: Live CD Persistent changes

  1. #1
    Join Date
    Feb 2008

    Live CD Persistent changes

    I'm running Kubuntu 20.10. I created a Hirsute 21.04 development Live USB using Startup Disk Creator. The USB has an iso9660 filesystem, and is thus not writable(??), but has a Casper partition, which I understand is what is needed to be able to make changes to the live image persistent. But I don't know what to do from there, ie how to save changes and apply them during succeeding boots. Can someone enlighten me? And if I were to make and save large changes, can I expand the Casper partition (there's plenty of space on the USB stick). Thx, Gus

  2. #2
    Join Date
    Jun 2007
    Hikkaduwa, Sri Lanka
    Ubuntu 20.04 Focal Fossa

    Re: Live CD Persistent changes

    A Startup Disk Creator USB is writable
    You just need to prime it every boot that you want to be persistent.

    If your Live USB boots UEFI, at the grub menu press "e" and the menuentry should open for editing.
    At the end of the "linux" line type "persistent" then press f10 to boot.
    The following Ubuntu session should be persistent.

    If your Live USB boots using Syslinux in BIOS mode, press Shift when booting, then press Esc to get rid of the language screen, press F6 and Esc again. Type a space and then the word "persistent". press enter to complete boot into persistent Ubuntu.

    Any following session that is started the same way should also be persistent and retain programs and data from previous persistent sessions.

    If you do not use the Persistent procedure when booting, the session will be a standard Live session with nothing retained from the previous sessions.

    I have not tried this with 21.04 yet, please let me know if it doesn't work.
    Last edited by C.S.Cameron; February 22nd, 2021 at 06:16 AM.


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