[SOLVED] Unallocated Partition

Solution
If you used the Samsung Magician app and ran the Performance Optimization option and chose to enable Over Provisioning then that unallocated partition is actually the Over Provisioning partition used for wear levelling (i.e. the default reserved space is 10% of the SSD's total storage space).
If you used the Samsung Magician app and ran the Performance Optimization option and chose to enable Over Provisioning then that unallocated partition is actually the Over Provisioning partition used for wear levelling (i.e. the default reserved space is 10% of the SSD's total storage space).
 
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Solution
I think you're right!! I totally forgot about that, and now I remember that S. Magician did create and use that partition for Over Provisioning! It's the exact size that it's suggesting.

I think I will let the Magician do it again, definitely worth it.

Thanks!!

Edit: I wish Samsung Mag. would give such a partition a descriptive name to remove any ambiguity.