Partitions
QNX SDP8.0System ArchitectureDeveloperUser
The QNX OS complies with the de facto industry standard for partitioning a disk.
This allows a number of filesystems to
share the same physical disk. Each partition is also
represented as a block-special file, with the partition type
appended to the filename of the disk it's located on. In the
above
two-diskexample, if the first disk had a Power-Safe partition and a DOS partition, while the second disk had only a Power-Safe partition, then the default files would be:
- /dev/hd0
- First hard disk
- /dev/hd0t6
- DOS partition on first hard disk
- /dev/hd0t179
- Power-Safe partition on first hard disk
- /dev/hd1
- Second hard disk
- /dev/hd1t179
- Power-Safe partition on second hard disk
The following table shows some typical assigned partition types:
Type | Filesystem |
---|---|
1 | DOS (12-bit FAT) |
4 | DOS (16-bit FAT; partitions <32M) |
5 | DOS Extended Partition (enumerated but not presented) |
6 | DOS 4.0 (16-bit FAT; partitions ≥32M) |
7 | OS/2 HPFS |
11 | DOS 32-bit FAT; partitions up to 2047G |
12 | Same as Type 11, but uses Logical Block Address Int 13h extensions |
14 | Same as Type 6, but uses Logical Block Address Int 13h extensions |
15 | Same as Type 5, but uses Logical Block Address Int 13h extensions |
77 | QNX 4 |
78 | QNX 4 |
79 | QNX 4 |
99 | UNIX |
131 | Linux (Ext2) |
177 | QNX Power-Safe POSIX partition (secondary) |
178 | QNX Power-Safe POSIX partition (secondary) |
179 | QNX Power-Safe POSIX partition |
185 | QNX Trusted Disk (QTD) |
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