3

After cleaning my hard disk, I created some new partitions using DiskPart, but there is a parameter called "Offset". I have read about it on internet , but there is a little information available about it, and I wasn't able to understand what it actually means and what's used for.

I created a 4th partition of size 105 GB, but it is showing an offset of 127 GB, is it okay ?

I have attached a photo of DiskPart showing offset size

Algeriassic
  • 1,614
  • 10
  • 10
RAHUL JAISWAL
  • 45
  • 1
  • 1
  • 7

1 Answers1

7

The offset is where your new partition starts from.

How 127 GB was calculated?

Notice the offset of each partition is the sum of: the size of the precedent partition and the last offset. (The first partition starts at 1024KB = 1MB).

The first offset is 1024KB (1MB).

  • The first partition has a size of 100MB. The second partition's offset is 101MB (100MB + 1MB).

  • The second partition's size is 29GB. The offset for the 3rd partition is 29GB + 101MB which is still 29GB (29.1 GB actually)

  • The 3rd partition's size is 97GB. The next (4th) partition will have an offset of 29.1GB + 97GB = ~127GB

  • The next partition, if you decide to create a new one, will start from 127GB + 105GB = 232 GB

Algeriassic
  • 1,614
  • 10
  • 10