Despite adjusting the boot order in BIOS ...
Does the change in boot order stick? There was a bug in early UEFI firmware, especially common with HPs, where it was hard coded to keep Windows at top of the boot list. Firmware would appear to accept a change, but the order would revert on reboot. If those are your symptoms, the
solution is to use efibootmgr to deactivate the Windows firmware entry, leaving it first but ignored.
If those aren't your symptoms, the issue might be that the system volume is too small. Looks like you did a default encrypted installation, then went in (presumably per a tutorial), shrank the system volume and added the home volume. If that's the scenario, the solution is to rebalance the split between system and home. With a TB drive, there's no reason to be stingy with system; I'd give it at least 30 GB (more is you want to install container apps). You could resize the swap volume (or not) at the same time. The default value is fine for most cases. It's true, though, the default won't support hibernation.
As an aside, you're making this unnecessarily complicated by using system encryption. You can protect the stuff which needs protecting (passwords and sensitive files) by other means. Meanwhile, an encrypted system is more difficult to repair, multi-boot and/or reinstall. For what? If someone finds or steals your computer, they're not gonna install a keylogger and return the machine. That only happens in movies.
Statistics: Posted by pbear — 2025-03-23 15:29