Can't convert my hdd to dynamic disk

Hello Yassin,

Thank you for posting in Q&A forum.

The primary reason for this issue is the lack of at least 1MB of unallocated space at the end of the MBR disk. This space is necessary to create the database for the dynamic disk. You could try to create a dummy volume in this space.

Reference:

superuser.com

I hope the information above is helpful.

If you have any questions or concerns, please feel free to let us know.

Best Regards,

Daisy Zhou

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I recommend to to format the selected disk as NTFS first, see if it helps. Try these commands:

list volume

select volume x (replace x with the number of partition/disk you want to convert)

format fs=ntfs