FFS (and OFS) stores a "bitmap" of the filesystem in a single sector. Despite this, it is still used on AmigaOS systems and shipped with both MorphOS and AmigaOS 4.īy the last Commodore release of AmigaOS, 3.1, FFS was still the only filesystem shipped as standard with the Amiga, but it was already showing its age as technology advanced. However, as OFS had done before it, it aged as drives became larger and the number of files on them increased, its use as a day-to-day filesystem became more problematic in terms of difficulty of maintenance and competitiveness of general performance.
(This was purely for compatibility with pre-AmigaOS 2 systems in games and applications that did not actually require AmigaOS 2+, as machines running earlier versions of the OS without FFS in the ROM could not boot from these floppies, although they could still read them if they had FFS installed.)Īmiga FFS is simple and efficient, and when introduced was more than adequate, and had many advantages compared to the file systems of other platforms. Given these advantages, FFS was rapidly adopted as the most common filesystem used by almost all Amiga users, although OFS continued to be widely used on floppy disks from third-party software vendors. FFS was backward-compatible and could access devices formatted with OFS. The previous filesystem, AmigaDOS, was renamed OFS, Old File System, to differentiate between it and FFS. The redundancy was removed with FFS and the data read in from media are passed to the application directly. hard disks) became more available to the Amiga, this redundant data posed a bottleneck as all data needed to be realigned to be passed to the application.
Before FFS was released, AmigaOS had a single filesystem simply called AmigaDOS: this uses 24 bytes per sector for redundancy data, providing for reconstructing structural data on less reliable media such as floppy disks. ( May 2017) ( Learn how and when to remove this template message) Statements consisting only of original research should be removed. Please improve it by verifying the claims made and adding inline citations. This section possibly contains original research.
0 kommentar(er)
