I want to install Linux on external USB hard drive. Should I install it like at flash-drive, i.e. with persistent mode enabled?
HDD: 1 TB, USB 3.0 but I'm likely to use it with 2.0 because my PC doesn't support 3.0.
Just install it normally, but make sure the installation refers to the partitions by UUID (when using it later, there is no guarantee it'll get the same drive device).