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G6KUI > DOS 03.05.04 23:19l 40 Lines 1245 Bytes #999 (0) @ WW
BID : 70885-G6KUI
Read: GUEST
Subj: Re: Cluster size on large disks
Path: DB0FHN<DB0RGB<OK0PPL<DB0RES<ON0AR<GB7DBY
Sent: 040503/2148z @:GB7DBY.#23.GBR.EU NPF2.54c [G6KUI PMS Alvaston Derby]
Roy G0OSW askes about cluster sizes.
It all depends on Partition size.
Partition size FAT16 cluster size FAT32 cluster size
32 MB (megabytes) 2 KB (kilobytes) -
128 MB 2 KB -
256 MB 4 KB -
512 MB 8 KB 4 KB
1 GB (gigabyte) 16 KB 4 KB
2 GB 32 KB 4 KB
3 GB - 7 GB - 4 KB
8 GB - 16 GB - 8 KB
16 GB - 32 GB - 16 KB
Larger than 32 GB - 32 KB
Partitions larger than 2 GB are not supported with FAT16,
and partitions smaller than 512 MB are not supported with FAT32.
If your hard disk is smaller than 2 GB and your computer uses the FAT16 file
system, you may not see much improvement if you convert to FAT32. But you
may want to convert to FAT32 if your hard disk is between 2 GB and 2 TB
(terabytes) and you want to improve it's efficiency.
source :- Windows 98 users manual.
As an example a 120GB FAT32 partition will have :-
32,768 btyes in each allocation unit
and 3,662,175 total allocation units in the partition.
73, Pete G6KUI
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