The Installable File System (IFS) is a driver in the OS/2 operating system, and is a method of using certain drivers that recognize different file systems on a computer. For example, for OS/2 to recognize a CD-ROM file system, the CD-ROM IFS has to be loaded.
The standard installation provides IFSs for HPFS, JFS, CD-ROM and RAM disk. FAT support though is integrated in the kernel. Other IFS provided by IBM or third-parties include NTFS, FTP, Ext2, AFS, TVFS, NFS.
| Filesystem List |
| Filesystems: FAT | FATX | FAT12 | FAT16 | FATX16 | FAT32 | FATX32 | NTFS | JFS | Ext | Ext2 | Ext3 | HPFS | ReiserFS | Reiser4 | HFS+ | FFS | UFS1 | UFS2 | UFSMacOSX | XFS | OFS | BFS | BeFS | OpenBFS | NSS | NWFS | ODS5 | VxFS | ZFS | MFS | IFS | AFS | TVFS | MinixFS | SkyFS | AtheOSFS | ArlaFS | CDFS | UDF | CFS | DFS | OpenAFS | GFS | DTFS | CODA | UMSDOS | OldBeFS | RFS | EFS |