![]() This mistake was corrected in OS 2.0, but is optional. The Amiga uses the ISO 8859 Latin-1 character set, where in older operating systems (<2.0), international characters (e.g., ‘ø’) were not capitalised. For that purpose, file names are shifted to upper case in file name matching routines. But during file name matching, the case is ignored. On the Amiga file names can have both lower and upper case characters. This mode was meant to correct for a mistake in the routine to convert text into upper case. In OS version 2.0 the ‘international mode’ was also introduced. So disks formatted with this file systems cannot be read by Amiga OS versions <2.0. The FFS does not have backward compatability. This advantage was dropped with the FFS making it slightly faster (on original machines) and gaining disk space for file data. The OFS sacrifices disk space for validation purposes, making it more robust in case of data recovery when a disk got damaged. The previous file system was not named at the time, but is now commonly referred to as the Old File System (OFS). ![]() With Amiga OS version 2.0, the so-called Fast File System (FFS) was introduced. ![]()
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