I voted for ext2/ext3 but use ext4. It is probably one of the most well tested and understood operating systems (second to the FAT family).
Except for the fact that ext4 is a filesystem, not an operating system.
(Score: 2, Insightful) by Deeo Kain on Saturday February 04 2017, @11:17AM
Except for the fact that ext4 is a filesystem, not an operating system.