Hello I worked around the problem by removing the words quiet splash from the entry menus of the /boot/grub/grub.cfg file so that I could enter the password. But the swap partition is not mounted. Probably because is name is now SDA2 and not SDC2 which was the name during installation on a external drive.
sudo blkid | grep sda2 /dev/sda2: UUID="99ce927e-67ae-4e9a-93f1-ac637af7f34f" TYPE="crypto_LUKS" PARTUUID="caada0e6-030f-5143-93f8-8534629af79c" a@a:~$ df -h Sys. de fichiers Taille Utilisé Dispo Uti% Monté sur tmpfs 583M 2,1M 581M 1% /run /dev/mapper/keystore-rpool 437M 28K 404M 1% /run/keystore/rpool rpool/ROOT/ubuntu_trj428 444G 3,1G 441G 1% / tmpfs 2,9G 3,3M 2,9G 1% /dev/shm tmpfs 5,0M 4,0K 5,0M 1% /run/lock rpool/USERDATA/root_77w87m 441G 384K 441G 1% /root rpool/ROOT/ubuntu_trj428/var/mail 441G 256K 441G 1% /var/mail rpool/ROOT/ubuntu_trj428/var/snap 441G 1,9M 441G 1% /var/snap rpool/ROOT/ubuntu_trj428/var/www 441G 256K 441G 1% /var/www rpool/ROOT/ubuntu_trj428/srv 441G 256K 441G 1% /srv rpool/USERDATA/a_77w87m 441G 102M 441G 1% /home/a rpool/ROOT/ubuntu_trj428/var/spool 441G 384K 441G 1% /var/spool rpool/ROOT/ubuntu_trj428/var/games 441G 256K 441G 1% /var/games rpool/ROOT/ubuntu_trj428/usr/local 441G 512K 441G 1% /usr/local rpool/ROOT/ubuntu_trj428/var/lib 442G 1,3G 441G 1% /var/lib rpool/ROOT/ubuntu_trj428/var/lib/AccountsService 441G 256K 441G 1% /var/lib/AccountsService rpool/ROOT/ubuntu_trj428/var/lib/NetworkManager 441G 256K 441G 1% /var/lib/NetworkManager rpool/ROOT/ubuntu_trj428/var/lib/apt 441G 96M 441G 1% /var/lib/apt rpool/ROOT/ubuntu_trj428/var/lib/dpkg 441G 51M 441G 1% /var/lib/dpkg rpool/ROOT/ubuntu_trj428/var/log 441G 3,2M 441G 1% /var/log bpool/BOOT/ubuntu_trj428 1,8G 85M 1,7G 5% /boot /dev/sdb1 98M 32M 67M 32% /boot/efi tmpfs 583M 11M 573M 2% /run/user/1000 note The goog name seems /run/keystore/rpool journalctl -b -p err févr. 17 00:33:23 a systemd[1]: Timed out waiting for device /dev/sdc2 ..... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1961055 Title: Key load error: Failed to open key material file: No such file or directory To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1961055/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs