I spent a morning trying to debug my LTSP server, which wasn't booting after it's feisty upgrade.
I assume it was something to do with RAID & LVM on the root initially, but after I got through that, it still wouldn't boot.
Aah, but the recovery option worked
Ok, so maybe it's something with usplash, restart and boot without
quiet but with
Eventually I found that it just needed a few extra seconds of spin-time in the grub screen (increase
timeout to 10), and now it works.