Windows 10 not showing second partition in defrag window

It seems that only one partition +system reserved are showed. Any idea why?

It seems that only one partition +system reserved are showed. Any idea why?

In practical terms the hidden/system/inaccessible partitions are not intended to be used so defragging is not necessary.

In practical terms the hidden/system/inaccessible partitions are not intended to be used so defragging is not necessary.

The partition was showing before.

The partition was showing before.

How big was the partition? Does it still show in Disk Management?

How big was the partition? Does it still show in Disk Management?

500GB. And yes, it's present there.

500GB. And yes, it's present there.

Has a drive letter been assigned to it in Disk Management?

Has a drive letter been assigned to it in Disk Management?

Yep. Everything was working OK until the cumulative update from today.

Please post a screenshot when you run
diskmgmt.msc from a command prompt

and what your defrag program (which?) is showing.
Thanks

Please post a screenshot when you run
diskmgmt.msc from a command prompt

and what your defrag program (which?) is showing.
Thanks

I've been using the default defragmentation program.

But after 2-3 restarts it's ok. For one reason or another.

Thanks anyway!

Weird how sometimes people find problems disappear.. seen it a few times. Good luck!