History
Originally known as Amiga File System, the filesystem itself was very similar to that of Xerox Alto Filesystem. Development was from 1982 to 1985 as the filesystem of TripOS. It received the nickname of "Old" or "Original" when Fast File System was released with Amiga OS 1.3.
OFS is very good for repairing the filesystem in the event of a problem, although the so called DiskDoctor provided by Commodore quickly earned the name DiskDestroyer, because it could not repair No-DOS type autostart disks provided by third-party software manufacturers as bootable disks for games. Interestingly, the idea to create non-standard autobootable disks was born in a primitive attempt to prevent copy of such disks and to avoid the loading and launch of Amiga DOS, in order to directly access the amiga graphic, audio and memory chipsets. DiskDoctor in fact changed autostart disks bootblocks into standard AmigaDOS-based ones, renaming a disk with "Lazarus" namedisk, and made the autostart disk unusable.
Metacomco, BSTRINGS, BPOINTERS, and family contained in the Amiga FS entered the scene when it was decided that the originally planned OS would take too long to be developed in time for the launch of Amiga. Consequently, Metacomco grafted onto the filesystem a lot of things that the old Amiga Inc. has changed.
Read more about this topic: Amiga Old File System
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