OS/2 PACK2 archive
(→Software) |
|||
| Line 14: | Line 14: | ||
== Format details == | == Format details == | ||
| − | + | The compressed data segments contain [[FourCC]] codes for the compression scheme. Two codes are known to exist: "<code>fT19</code>", and, much more rarely, "<code>fT21</code>". | |
== Identification == | == Identification == | ||
| Line 30: | Line 30: | ||
Other: | Other: | ||
* [https://winworldpc.com/product/pc-dos/7x WinWorld: PC-DOS 7.x] → "IBM PC-DOS 7.0 (3.5-XDF)" → 144US1.DSK → UNPACK2.EXE (for DOS) | * [https://winworldpc.com/product/pc-dos/7x WinWorld: PC-DOS 7.x] → "IBM PC-DOS 7.0 (3.5-XDF)" → 144US1.DSK → UNPACK2.EXE (for DOS) | ||
| + | * {{Deark}} | ||
* https://github.com/martinlindhe/formats (Maybe just parses the header.) | * https://github.com/martinlindhe/formats (Maybe just parses the header.) | ||
| Line 35: | Line 36: | ||
== Sample files == | == Sample files == | ||
| − | * | + | * {{CdTextfilesURL|venus/64v2/os2/}} → *.pk2 |
| − | * | + | * {{CdTextfilesURL|hobbesos29709/disk1/GAMES/MAH21DE.ZIP}} → *@ |
| − | * | + | * {{CdTextfilesURL|hobbesos29709/disk1/GAMES/SEAHAV23.ZIP}} → *_ |
| − | * | + | * {{CdTextfilesURL|hobbesos29709/disk1/GAMES/TOYLAND.ZIP}} → *_ |
* [https://winworldpc.com/product/pc-dos/7x WinWorld: PC-DOS 7.x] → "IBM PC-DOS 7.0 (3.5-XDF)" → 144US2.XDF → BACKUP1, etc. ("<code>fT21</code>" format) | * [https://winworldpc.com/product/pc-dos/7x WinWorld: PC-DOS 7.x] → "IBM PC-DOS 7.0 (3.5-XDF)" → 144US2.XDF → BACKUP1, etc. ("<code>fT21</code>" format) | ||
* {{DexvertSamples|archive/os2FTCOMP}} | * {{DexvertSamples|archive/os2FTCOMP}} | ||
[[Category:OS/2]] | [[Category:OS/2]] | ||
Latest revision as of 14:35, 26 September 2026
OS/2 PACK2 archive (maybe also called FTCOMP format) is a compressed archive format used on OS/2, particularly by software installers.
See also OS/2 PACK archive.
Contents |
[edit] Discussion
On the OS/2 3.0 and 4.0 installation disks, some PACK2 files are named with a trailing underscore, like "DSPRES.DL_". These archives contain a single compressed file, and are named after that file with the last letter replaced with an underscore. Some PACK2 files are named with no extension, like "BUNDLE" or "KLONDIKE" or "SERIAL". These archives contain a collection of compressed files - "BUNDLE" if there's no other archive in the same directory, or some name specific to its contents.
PACK2 format is associated with the PACK2.EXE and UNPACK2.EXE utilities. In some cases, the "UNPACK" command can decompress PACK2 format, but this apparently works by using the UNPACK2.EXE utility behind the scenes.
[edit] Format details
The compressed data segments contain FourCC codes for the compression scheme. Two codes are known to exist: "fT19", and, much more rarely, "fT21".
[edit] Identification
Files begin with bytes a5 96 fd ff. ASCII "FTCOMP" appears at offset 24.
Compare to OS/2 PACK archive#Identification.
[edit] Software
OS/2 software:
- The OS/2 3.0 and 4.0 install CDs contain OS/2 command-line tools UNPACK.EXE and UNPACK2.EXE.
- Also found in many device driver packages, e.g. OS/2 Shareware BBS Full Collection → 33-VDrivers.zip → cirrus1.zip (Note: Many other versions of these tools exist.)
- The OS/2 Developer's Toolkit contains OS/2 command-line tool PACK2.EXE.
- OS/2 Shareware BBS Full Collection → 10-Tools.zip → warptlk3.zip → TOOLKIT/BIN/PACK2.EXE
Other:
- WinWorld: PC-DOS 7.x → "IBM PC-DOS 7.0 (3.5-XDF)" → 144US1.DSK → UNPACK2.EXE (for DOS)
- Deark
- https://github.com/martinlindhe/formats (Maybe just parses the header.)
Caution: Some PACK2 archives contain absolute file paths, which by default are respected by some or all UNPACK utilities.
[edit] Sample files
- http://cd.textfiles.com/venus/64v2/os2/ → *.pk2
- http://cd.textfiles.com/hobbesos29709/disk1/GAMES/MAH21DE.ZIP → *@
- http://cd.textfiles.com/hobbesos29709/disk1/GAMES/SEAHAV23.ZIP → *_
- http://cd.textfiles.com/hobbesos29709/disk1/GAMES/TOYLAND.ZIP → *_
- WinWorld: PC-DOS 7.x → "IBM PC-DOS 7.0 (3.5-XDF)" → 144US2.XDF → BACKUP1, etc. ("
fT21" format) - dexvert samples — archive/os2FTCOMP
