Too many partitions?

OP is unallocated space whenever I have seen it.

This can be an encrypted volume.

EFI partition should be at least 260MB in size to avoid "small cluster size detected" for 4K partition alignment.

eLPuSHeR said:

EFI partition should be at least 260MB in size to avoid "small cluster size detected" for 4K partition alignment.

I've never had an issue with a 100 MB EFI System Partition.

NavyLCDR said:

I've never had an issue with a 100 MB EFI System Partition.

So do I.

From UEFI/GPT-based hard drive partitions it says that the minimum EFI - Fat32 size is 100M.

"For Advanced Format 4K Native drives (4-KB-per-sector) drives, the minimum size is 260 MB, due to a limitation of the FAT32 file format. The minimum partition size of FAT32 drives is calculated as sector size (4KB) x 65527 = 256 MB. Advanced Format 512e drives are not affected by this limitation, because their emulated sector size is 512 bytes. 512 bytes x 65527 = 32 MB, which is less than the 100 MB minimum size for this partition."

For the Win 10 MSR partition, the size is 16 MB.

"Add an MSR to each GPT drive to help with partition management. The MSR is a reserved partition that does not receive a partition ID. It cannot store user data."
I have a feeling that MSR partition is to store encryption keys so NSA and other security agency s can easily look at your drive.