I’ve increased the hard disk size, but why hasn’t it upgraded in Windows?

When a change is made to the disk, Windows does not automatically update the file system.  While you have increased the physical disk size, the file system still sees only the space you had before.

You will need to update the file system manually using diskpart – a command-line utility available in Windows.

To open diskpart:

1. Log into your server
2. Open a command window
3. Enter in

diskpart

4. diskpart will open in a new window

To update your server in diskpart:

1. Enter in

list disk

2. This will show you the disks you have on your server, with the correct upgraded size
3. Select the disk by entering

sel disk 0

Where the number is the disk you have upgraded

4. Then list the partitions on your disk by entering

list part

5. When you have the list of the partitions, select the largest partition (usually Partition 2) by entering

sel part 2

6. Now extend the file system by entering

extend filesystem

7. This will allocate all the available disk space on that partition to the filesystem, and your Windows server will show the correct disk space