3

I have just noticed that casper-rw persistent files are not working with Ubuntu 20.04 when booted from an ISO file.

Persistent partitions are again working, however persistent partitions do not work with "persistent-path" and only one persistent partition is allowed per USB drive.

This means that a multiboot, multipersistence USB drive is no longer possible using ISO files.

I have also just tested BIOS and UEFI boot modes of a Persistent UNetbootin USB drive and persistence does not seem to be working with Syslinux either.

Hopefully someone will point out where I am making an error, or show how to fix this problem.

Reference: How do I boot an ISO file from my drive using grub2 on UEFI machines?

Bug Report: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1877222

1 Answer 1

3

casper-rw is now writable

The persistent file/partition name in Ubuntu 20.04 has been officially changed from casper-rw to writable.

On my computer a persistent partition can be named either casper-rw or writable and it will still work.

However a persistent file must now be named writable.

On a persistent 20.04 drive made with Unetbootin, changing casper-rw to writable will also fix persistence.

One Live USB expert compared this to America changing the name of the dollar to "valuable".

1
  • I wonder why they renamed, casper-rw made more sense, casper system read write. -rw felt like an extension as well, while "writable" is such plain name Jan 27 at 22:26

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.