OS/2 file systems
The traditional file systems that you can use with OS/2 are FAT, HPFS, and
HPFS386. With the release of OS/2 Warp Server for e-business, OS/2 users
were introduced to IBM journaled file system (JFS) for OS/2. JFS sets itself apart
from traditional OS/2 file systems in two ways:
It isn’t bootable.
It records all changes that are made to it, for example, database access, file
moves and copies, and so on.
If OS/2 traps rendering the file system dirty, at any point, on reboot the JFS drive
replays its journal log and brings the system up immediately without data loss or
corruption.