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The limit on partition size was dictated by the 8-bit signed count of sectors per cluster, which originally had a maximum power-of-two value of 64. With the standard hard disk sector size of 512 bytes, this gives a maximum of 32 KB cluster size, thereby fixing the "definitive" limit for the FAT16 partition size at 2 GB for sector size 512.
For most DOS-based operating systems, the maximum cluster size remains at 32 KB (or 64 KB) even for sector sizes larger than 512 bytes. For logical sector sizes of 1 KB, 2 KB and 4 KB, Windows NT 4.0 supports cluster sizes of 128 KB, while for 2 KB and 4 KB sectors the cluster size can reach 256 KB.
No limit defined [cf] 64 MiB (67.10 MB) 2 GiB (2.147 GB) ? ZFS: 255 bytes Any Unicode except NUL No limit defined [cf] 16 EiB (18.44 EB) 281,474,976,710,656 YiB (2 128 bytes) 2 128: File system Maximum filename length Allowable characters in directory entries [cc] Maximum pathname length Maximum file size Maximum volume size [cd] Max number of ...
But the greater speed attainable by direct control of hardware was of particular importance, especially when running computer games. So very soon an IBM-compatible architecture became the goal, and before long all 8086-family computers closely emulated IBM hardware , and only a single version of MS-DOS for a fixed hardware platform was all that ...
The FAT12 and FAT16 file systems had a limit on the number of entries in the root directory of the file system and had restrictions on the maximum size of FAT-formatted disks or partitions. FAT32 addresses the limitations in FAT12 and FAT16, except for the file size limit of close to 4 GB, but it remains limited compared to NTFS.
For example, the FAT32 file system does not support files larger than 4 GiB−1 (with older applications even only 2 GiB−1); the variant FAT32+ does support larger files (up to 256 GiB−1), but (so far) is only supported in some versions of DR-DOS, [2] [3] so users of Microsoft Windows have to use NTFS or exFAT instead.
The Macintosh File System does not support volumes over 20 MB in size, or about 1,400 files. [citation needed] While this is small by today's standards, at the time it seemed very expansive when compared to the Macintosh's 400 KB floppy drive. Apple introduced Hierarchical File System as a replacement for MFS in September 1985.
This partition is used by Mac OS for the Macintosh File System (MFS), which was introduced with the Macintosh 128K in 1984. Apple_partition_map: partition map: Apple: The partition map is also a partition of its own. It can vary in size depending on how many partitions it may contain. Apple_Patches: patches: Patch Partition: Mac OS classic ...