File
System
System
A
file system is the method used by an OS to manage the data on a drive. To make
different drive or partitions, we use FDISK command. To make tracks &
sectors on a drive, we use FORMAT command. The OS uses only one file system for
an entire logical drive.
file system is the method used by an OS to manage the data on a drive. To make
different drive or partitions, we use FDISK command. To make tracks &
sectors on a drive, we use FORMAT command. The OS uses only one file system for
an entire logical drive.
Types of
file system
file system
- CDFS: –
It is Compact Disk File System. It is read only and used to read the
contents of CD – ROM. It is supported by all OS. In some OS we need to
install it like in DOS but in OS like 9x it automatically installed. - UDF: –
It is Universal Disk Format and read only file system used to read the
contents of DVD. - HPFS: –
It is High Performance File System which comes only in Win NT 3.5. - FAT 16:
– FAT is File Allocation Table and 16 means it used 16 bits or 2 Bytes
to make each entry. It is supported by all OS so it is also called
universal file system. - FAT 32:
– This f/s use 32 bits to make each entry. But it is not supported by
DOS, Win 95 and Win NT.
Difference
between FAT 16 & FAT 32
between FAT 16 & FAT 32
FAT 16
1. Hard Disk Size
in Win 98 à Up to 2GB
in Win NT/2k à Up to 4GB
2. Cluster size
in 2GB à 32KB
in 4GB à 64KB
3. It is slow in speed.
4. It is supported by all OS. |
FAT 32
1. Hard Disk Size
in Win 98 à Up to 2TB
in Win 2k à Up to 32GB
2. Cluster size
in 8GB à 4KB
in 16GB à 8KB
3. It is fast in speed.
4. It is don’t supported by DOS, Win 95,
Win NT. |
- NTFS: –
It is New Technology File System.
In Win NT 4.0 à NTFS 4.0
In Win NT 5.0 à NTFS 5.0
Features
of NTFS
of NTFS
There are many hot features of NTFS
file system over FAT. Comparison of NTFS, FAT 32 and FAT 16 in case of Win 2k
is displayed on next page: –
file system over FAT. Comparison of NTFS, FAT 32 and FAT 16 in case of Win 2k
is displayed on next page: –
Feature
1. File level security
2. Speed to access files
3. Huge partition
4. Compression (file level)
5. Long file name
6. Local security
7. Cluster size
8.Recoverable f/s
9. Encrypting f/s
10. Disk Quota |
NTFS
√ (12 permissions)
√
16EB
2:1
√
√
64 bits
√
√
√ |
FAT 32
X
√
32GB
X
√
X
32 bits
X
X
X |
FAT 16
X
X
4GB
X
X
X
16 bits
X
X
X |
Use in
Different OS
Different OS
All
the OS does not support all f/s. The table of supportness of f/s of each OS is
given below: –
the OS does not support all f/s. The table of supportness of f/s of each OS is
given below: –
OS |
FAT 12 |
FAT 16 |
FAT 32 |
NTFS |
CDFS |
DOS |
√ |
√ |
X |
X |
√ |
Win 95 |
√ |
√ |
X |
X |
√ |
Win 98 |
√ |
√ |
√ |
X |
√ |
Win ME |
√ |
√ |
√ |
√ |
√ |
Win 2k |
√ |
√ |
√ |
√ |
√ |
Win NT |
√ |
√ |
X |
√ |
√ |
Converting
FAT f/s to NTFS
FAT f/s to NTFS
There
are fewer features in FAT f/s rather than NTFS. We can convert FAT f/s to NTFS
by using the following command on Command Prompt.
are fewer features in FAT f/s rather than NTFS. We can convert FAT f/s to NTFS
by using the following command on Command Prompt.
CONVERT : /FS:NTFS
But we can not
convert NTFS partition to FAT. It can corrupt the data.
convert NTFS partition to FAT. It can corrupt the data.
