Casper-rw Persistence files not working with 20.04

[C.S.Cameron]

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

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

Hopefully someone will point out that I am making an error somewhere.

I have also just tested BIOS boot of a Persistent UNetbootin USB drive and there is no persistence.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[C.S.Cameron (cscameron)]

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.

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

[Adam W (lubuntu-tester)]

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

Could you post a link/reference here?

[C.S.Cameron (cscameron)]

@Adam W

https://bugs.launchpad.net/ubuntu/+source/casper/+bug/1863672

[Adam W (lubuntu-tester)]

I can confirm using the name "casper-rw"(for a persistence file, not a partition) with cmd args "persistent-path" is broken on 20.04.

Changing the name to "writable" resumes the expected behavior.

@cscameron, Thanks for the link above.