Defrag is reducing my hard drive space

I’m defragmenting my hard disc and I’m noticing a strange situation here! before defragging my free space was 110Gb and now when its 31% defragged the free space is 92GB and its decreasing continuously.. any ideas about what I should do now??

Mechanical hard drives store data in blocks, which are like parking spaces in a car park. When Windows saves data onto a drive it “parks” the new information in the first available space and often will break up files bigger than a single block (which are most files) across different parts of the disk. This slows down the system when you want to open or save a file.

The Windows defrag program rearranges the data on your hard drive so all the bits in each file are parked next to each other, making the process a lot more efficient.

Because defrag has to shuffle the stored data on the hard drive, you’ll see the amount of free space available grow and shrink as it goes about figuring where the best place to put data is. It’s the same as when you reorganise a cupboard or workroom.

So don’t worry about it unless you find there is substantially less free space at the end of the process. If that does happen, check your drive for bad blocks or give your drive a clean up.


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    One Response to “Defrag is reducing my hard drive space”

    1. I find that that the in-built defragger is slow and has a few issues. I’ve always used 3rd party defraggers. I now use a fully automatic defragger. It has many options and runs under low free space.

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