This may help actually, there is a chance this issue is caused by the
existing installation on your disk
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https://bugs.launchpad.net/bugs/1874965
Title:
install 20.04 crashed
To
I'm having the same problem replacing 18.04 with 20.4, in my case it
crashed saying that the disk is currently in use followed by
>Ubiquity: AssertionError: Failed to mount the target: /target
I also have a video of the failed installation flow, I reproduced the
problem several times but not the
Seems like below is what causes installer crash:
>Apr 25 04:02:05 ubuntu ubiquity: umount: /target: target is busy.
I'm having the same problem replacing 18.04 with 20.4, in my case it
crashed saying that the disk is currently in use followed by
>Ubiquity: AssertionError: Failed to mount the
