What would happen to my computer if i defrag it with only 3% space instead of 15%??

Answer 1

It'll take a LOT LOT LOT longer to defrag. ALWAYS try to remove unneeded files before you defrag for a quicker process.

Answer 2

A minimum of 15% free space is recommended for defragging. Anything lower and it may not often (but not always) be possible to defrag, depending upon the size of the largest file on the drive. If the largest drive size exceeds the available free space then the defragmenter will not process that file. Also, even if it can defrag a drive in low space conditions, it will take much much longer than if it had >15% free space. Also, a dedicated defragmenter like Diskeeper will defrag much faster than the built-in windows defragger even when free space is greater than 15% since it uses much better defrag algorithms.

Answer 3

Imagine your bookshelf is completely disorganzied and there is absolutely no freespace to work on so that the scattered books can be put together. The same goes for fragmented files as well. If there is no free space, the files cant be moved around to be put together. And 15% is the minimum requirement for that. Which is why its best to check fragmentation levels before the drive runs out of the minimum free space requirement. Its as simple as going to to doc when you see small symptoms of a disease than wait for it to grow serious.

Answer 4

Defraging your computer is just going to take longer to do when you wait. You need to start doing maintenance more often, if you don't it just takes longer to do, and other problems will cause your computer to slow down.

Answer 5

It will still defrag, but it will take much longer.

Answer 6

dump some big files, like video.
search on file size..
maybe dump a game you dont play.
MIKE