Windows 7 has several editions including Starter, Home Basic, Home Premium, Professional, Enterprise, and Ultimate. It supports two main file systems: FAT and NTFS. FAT is simpler and supports up to 32GB of storage, while NTFS is the default for disks over 32GB and supports access controls and encryption. A newer file system called ReFS is designed for Windows 8 servers and provides resilience through features like copy-on-write that prevent overwriting of data.

1. Windows 7
 where Each Can Be Implemented in Case
 Editions
 File Systems
 Why Computers Go Slow And Their Remedies

2. Editions
 Windows 7 Starter
 Windows 7 Home Basic
 Windows 7 Home Premium
 Windows 7 Professional
 Windows 7 Enterprise
 Windows 7 Ultimate

3. File Systems
 File System is a structured data representation and a set of metadata that
describes the stored data.
 File Systems for Windows include:
- FAT (File Allocation Table )
-NTFS (New Technology File Systems)
-ReFS(Resilent File Systems)

4. FAT(File Allocation Table)
 It’s a simple type compared to the other types
It consists of:- --Descriptor Sector (Boot sector)
-- File system block allocation table
--Plain Storage space for files and Folders
There extra numbers added on FAT stand for the number of bits used to
enumerate file system blocks. I.e.
FAT 16:- this was used in old floppy disk technology
FAT 32:- this is currently and widely used in Flash disks and Memory Card. It can
hold up to 32GB of Data in Windows

5. NTFS (New Technology File System)
 Its was introduced By Windows NT and its currently the major file system for
Windows.
 It’s the default file systems for all hard disks beyond 32Gb
 It supports more file properties including Access controls and Encryption
 Each file on NTFS if stored as a descriptor in the master file table
 The MFT contains allow information about the files
 The First and Last sectors contain the file system settings
 NTFS uses 48 and 64 bit values to reference

6. ReFS (Resilent File system)
 It’s the latest development of Microsoft and its for only windows 8 servers
 Its deferent from the previous types its Architecture is in B+-tree form.
 It has high tolerance to failures achieved due to the new features in the
windows 8 system. I.e. Copy-On-Write(CoW)
No metadata is modified without being copied
No overwriting the exiting Data
 It creates links between the new files and the old backup which makes it easy
for recovery unless if the sectors have been overwritten or erased.

7. Causes of low computer Speed.