Ubuntu
ubiquity package

  1. Bug #1855531
  2. Comment #4

Comment 4 for bug 1855531

Revision history for this message
oldfred (oldfred) wrote :

For me I forced the unmount of /dev/sda5 which is where /isodevice mounted.
sudo umount -lrf /isodevice

Similar issue:
https://askubuntu.com/questions/1157619/install-cannot-modify-hard-disk