This document belongs to Manual Full System Encryption (with Extras).
1. Support
If you hit a problem that this troubleshooting guide doesn't help, you can ask for support. In all cases, it might be helpful to point to these instructions so that people know what you are trying to do.
The Ubuntu Forums is a friendly and welcoming place, with a section just for beginners, or you might prefer the section for Installation and Upgrades.
Ask Ubuntu, a member of StackExchange, is a no-nonsense Q&A site for Ubuntu-related questions.
2. Boot goes to initramfs
You boot your machine, but after a long time (about 3 minutes) waiting for the Ubuntu logo to move on…
… you get a black screen giving you some cryptic initramfs prompt.
This is usually because either /etc/crypttab is incorrect. To solve, do the following.
- Boot into a Live CD.
Open a terminal and unlock your partition.
Carefully repeat Create crypttab.
- Reboot your computer.
If you still have a problem, seek support, in particular to check that /etc/fstab is correct.
3. Computer fails to boot after upgrade or new installation
On rare occasions, you might find that the computer fails to boot. See Known Bugs for details.
- Boot into a Live CD.
Open a terminal and unlock your partition.
Enter chroot.
Type this command, which was created in the script to refresh Grub. It might take a minute or two to run.
/usr/local/sbin/refreshgrub
- Reboot your computer.