I have a minimal Ubuntu Server 16.04 installation on an old x86_64 desktop PC. Tried installing graphic UI with
tasksel (selected Lubuntu desktop and OpenSSH Server), but near 90% of process at
Configuring memtest86+ I got the following error:
EXT4-fs (sda3): write access unavailable, cannot proceed EXT4-fs (sda1): write access unavailable, cannot proceed
tasksel is stalled.
sda disk is not actually mounted, root and home directories are mounted from
sdb3. The system boots from the
sdb disk (it's selected in BIOS). Swap uses
sdb2 partition. So I'm not sure why
sda got involved.
How can I fix it or interrupt the process without breaking things?
Via another console I mounted
sda3, but of course
tasksel is still frozen.
tasksel was started by root user,
ps -ef shows it as root's process.