What is the most difficult problem that you have fixed in linux?
Accidentally put grub on the wrong partition on the device, which it was not happy with. Was able to copy some files over, manually boot the OS, and reconfigure grub to be in the right partition, took me about 2 hours? Then I did it again on a different machine, and speedran it lol
Who was your first?
Started with Raspbian when I first got my Pi, and have mostly used KUbuntu or Debian since.