[general] unmovable blocks

[pcandpc]

Hello?

When defragmenting a drive, I notice some big

green chunks of unmovable blocks.

Whereby are these unmovable blocks resulted?

How can I safely delete them to increase free space?

Thanks.

[nitroshift]

Those green blocks are system files. Windows defragmenter won't touch them but you can try other defragmenting programs and give them a shot.

[Jeremy]

Don't use the Windows Defragmenter.

Freeware Defragmenters:

Auslogics Disk Defrag

JKDefrag v3.8

Power Defragmenter + Contig

Commercial Defragmenters:

Diskeeper

O&O Defrag

PerfectDisk

UltimateDefrag

I personally recommend Diskeeper as it will automatically defragment your files without you ever needing to. It will place files as far towards the outer tracks as it needs to be to improve performance to an optimal state (read access). UltimateDefrag won't do it automatically but gives you more control where and how files are arranged. There's lots of documentation done by companies if you Google it but not so much done by 3rd party.

[pcandpc]

Thanks.