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ErgoPro m664-series PC Specialist's Handbook
Page 4-4 Edition 1 - Release 1 - March 1998
Tips & Hints
Using ISA Configuration Utility (ICU)
The driver DWCFGMG.SYS must be loaded before HIMEM.SYS. Can be used in DOS, Windows 3.x and
Windows for Workgroups 3.11 environments. If there are problems of configuring devices, f.e. audio, in
Windows NT 4.0, DOS version of ICU can be used to ensure the resources of the devices, then DOS ICU must
be used before starting Windows NT 4.0, booting DOS ICU from the floppy drive.
Hard disk partitioning
DOS 6.XX and Windows NT 4.0, FAT
Partition size Cluster size (allocation unit) File system
0 MB - 15 MB 4 096 Bytes (4 kB) FAT12
16 MB - 127 MB 2 048 Bytes (2 kB) FAT16
128 MB - 255 MB 4 096 Bytes (4 kB) FAT16
256 MB - 511 MB 8 192 Bytes (8 kB) FAT16
512 MB - 1023 MB 16 384 Bytes (16 kB) FAT16
1024 MB - 2048 MB 32 768 Bytes (32 kB) FAT16
2048 MB - 4096 MB 65 536 Bytes (64 kB) FAT16
4096 MB - 8192 MB
131 072 Bytes (128 kB), Windows NT 4.0 only
FAT16
8192 MB - 16384 MB
262 144 Bytes (256 kB), Windows NT 4.0 only
FAT16
The maximum partition size of the FAT file system in DOS is 2 GB (including Windows 95 FAT).
The maximum partition size of the FAT file system in Windows NT is 4 GB.
The FAT file system only supports 512 byte sectors, so both sectors per cluster and the cluser size is fixed.
The FAT file system supports cluster sizes up to 256 kB. Therefore, the physical size of a 1 byte file will be 1
cluster which may be (depending on the disk used) as little as 2048 Bytes or as great as 32 768 Bytes of disk
space used.
Windows 95 (OSR 2.xx), FAT32
Partition size Cluster size (allocation unit) File system
4 096 Bytes (4 kB) FAT32
< 8 GB 4 096 Bytes (4 kB) FAT32
The maximum size of the partition, using FAT32, is 8 GB (Gigabytes).
The maximum size of the hard disk, using FAT32, is 2 TB (Terabytes).
Windows NT, NTFS
Partition size Cluster size (allocation unit) File system
0 MB - 512 MB 512 Bytes NTFS
513 MB - 1024 MB 1024 Bytes NTFS
1025 MB - 2048 MB 2048 Bytes NTFS
> 2048 MB 4096 Bytes NTFS