Can't boot after adding partition

[dmnur]

Run these, then try again:

sudo systemctl start lvm2-lvmetad
sudo pvscan

[kristijanog]

[dmnur]

OK, let's try this:

sudo pvs -a
sudo vgscan -vvvv

The output of the second command will be very long, use something like this to upload it and get a short link (of course make sure you have working network connection):

sudo vgscan -vvvv | nc termbin.com 9999

You can then open this link locally from your computer and save the output to a file, then attach this file to your forum message.

UPD: also try booting from Ubuntu Desktop ISO, I'm not sure if GParted Live handles LVM well.

UPD2: the problem is solved, I'll describe the solution later.