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Live USB image can't boot after running out of memory on persistence file

rated 0 times [ 2] [ 0] / answers: 1 / hits: 769 / 2 Years ago, sun, july 3, 2022, 6:11:05

I created a live Ubuntu on a SanDisk 32GB USB-stick using
LiLi with
Ubuntu 17.10.1. During the creation I chose to have a persistance layer of 4GB. After running a couple of recoveries from the stick, the persistence layer filled up completely (no space left on device). Now Ubuntu is booting up to the point where it should ask if we want to install or try Ubuntu. The dialog is empty except the points that indicate the different pages in it. At this point, the network is connected, but it's not possible to continue to the live system.
Using Ctrl+Alt+F[1-10] is not bringing up any login shells.
I assume this is due to the completely full persistence layer (casper-rw if I'm correct).
Is there any possibility to either:

Boot up the system?

Access the files on the persistence layer?

Answers are much appreciated because it took ~13h to create the file index from a broken disk.

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2 Years ago

answered 2 Years ago fittecanap · Accepted Answer

To mount casper-rw file, (booting from a second drive).

Create directory:

sudo mkdir /media/casper

Then mount drive:

sudo mount -o loop casper-rw /media/casper/

After a few files are removed Persistent drive should boot.

If you need more persistence space, you can create a home-rw persistence file up to 4GB, (by copying and renaming a casper-rw file). It can contain all your home folder data, or you can make the boot drive using mkusb which uses an unlimited casper-rw partition.

If you will be needing to update or upgrade your boot drive it is probably best to do a Full install to the drive.