Acronis disk director suite 9.0 User Manual
Hard Disk And Operating System
Copyright © Acronis, Inc., 2000–2005
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Table 3. The following table gives the approximate dependence of
these losses versus the cluster size:
these losses versus the cluster size:
Partition Size
Cluster Size
Waste
<127 MB
2 KB
2%
128–255 MB
4 KB
4%
256–511 MB
8 KB
10%
512–1023 MB
16 KB
25%
1024–2047 MB
32 KB
40%
2048–4096 MB
64 KB
50%
Like many others, the FAT16 file system has a root folder. Unlike others
however, its root folder is stored in a special place and is limited in size (standard
formatting produces a 512-item root folder).
however, its root folder is stored in a special place and is limited in size (standard
formatting produces a 512-item root folder).
Initially, FAT16 had limitations to filenames that could only be eight characters
long, plus a dot, plus three characters of name extension. However, long name
support in Windows 95 and Windows NT bypasses this limitation.
long, plus a dot, plus three characters of name extension. However, long name
support in Windows 95 and Windows NT bypasses this limitation.
A.9.3 FAT32
The FAT32 file system appeared in Windows 95 OSR2 and is also supported by
Windows 98/Me and Windows 2000/XP. FAT32 grew out of FAT16. The main
differences between FAT32 and FAT16 are 28-bit cluster numbers and more
flexible root folder implementation, which is not limited in size. The reason for
FAT32 is the necessity to support large (larger than 8 Gigabytes) hard disks and
the inability to build any more complex file system into MS-DOS, which is still in
the core of Windows 95/98/ME.
Windows 98/Me and Windows 2000/XP. FAT32 grew out of FAT16. The main
differences between FAT32 and FAT16 are 28-bit cluster numbers and more
flexible root folder implementation, which is not limited in size. The reason for
FAT32 is the necessity to support large (larger than 8 Gigabytes) hard disks and
the inability to build any more complex file system into MS-DOS, which is still in
the core of Windows 95/98/ME.
Maximum size of FAT32 file system size is 2 Terabytes.
A.9.4 NTFS
NTFS is the primary file system for Windows NT/2000/XP. Its structure is closed,
so no other operating system fully supports it. The main structure of NTFS is the
master file table, or MFT. NTFS stores a copy of the critical part of the MFT to
reduce the possibility of data damage and loss. All other NTFS data structures
are special files.
so no other operating system fully supports it. The main structure of NTFS is the
master file table, or MFT. NTFS stores a copy of the critical part of the MFT to
reduce the possibility of data damage and loss. All other NTFS data structures
are special files.
Like the FAT, NTFS uses clusters to store files, but cluster size does not depend
on partition size. NTFS is a 64-bit file system. It uses Unicode to store file names.
It is also a journaling (failure-protected) file system, and supports compression
and encryption.
on partition size. NTFS is a 64-bit file system. It uses Unicode to store file names.
It is also a journaling (failure-protected) file system, and supports compression
and encryption.
Files in folders are indexed to speed up file search.