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First off, I'd like to emphasize that this is more a curiosity than wanting to recover a very small amount of space.

I created a 10 GiB NTFS partition (split off from what was originally a 1.4 TiB partition). Explorer reports the partition as 10736365568 bytes. This is 1028 KiB short of 10 GiB. What is the 1028 KiB used for?

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2 Answers

up vote 1 down vote accepted

Two things:

  1. You'll rarely have a partition of exactly 10gb (or any other specific size) because partitions must be set up on disk sector boundaries, so there's always a little bit of "rounding" that happens.

  2. If you're looking at the formatted size, then some of the space is used by filesystem overhead.

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Most likely for File System Accounting/Management.

It could also be a rounding error in the values you see - but the management answer is pretty likely it. I guess it may be an extended/logical partition accounting thing too..

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