I installed Ubuntu 16.04 dual boot alongside Windows 10. It failed, but I decided I wasn't that interested in Ubuntu anyway. I have now successfully removed the Ubuntu partition AND fixed the bootloader so that it's back to Windows.

There are 2 related problems :

  1. There seem to be a number of leftover partitions from Ubuntu but I'm not sure which ones can be safely deleted and the space recovered. Even if I knew which ones to delete.
  2. One of my disks is now listed as "dynamic" by Windows Disk Management - so I can do very little with it. Can't delete volumes, extend space etc. Research seems to suggest a third party tool such as Easeus can convert this back to a Basic disk - but is this what I need to do to recover the unutilised space?

The attached screenshot shows the partitions within Windows Disk Management.

Disk Partions reported by windows

  • If there is not any data you want in Disk 0, then you may clean that drive with diskpart command and start with making a new partition. – Biswapriyo Feb 8 '18 at 7:29

For Disk0: Did you have Ubuntu on Disk0? I am guessing yes and that is represented by drive D:. Things to check:

  1. Can you access any of the partitions on Disk0 besides the D: drive?
  2. If not, do you see any space used via the disk or computer management panels? That will give you a clue if there is anything stored in those partitions.
  3. I'm taking it that you tried the right click -> delete on the volume D and then the partitions? Once the volumes/partitions on Disk0 are deleted then you should have been able to right click on Disk0 and choose "Convert to Basic"

Here's the Microsoft doc on changing disk type: https://docs.microsoft.com/en-us/windows-server/storage/disk-management/change-a-dynamic-disk-back-to-a-basic-disk. From this it seems you can do it without a separate tool.

  • Ubuntu was on disk 0, the 500gb partition. Disk manager doesn't offer any options on those three other volumes on disk 0. So it can't delete them and I can't convert to a basic disk. So I can't follow the Microsoft guide unfortunately. There's an option to extend on the D: drive, but that then fails saying weirdly insufficient space. There's masses of space on the D drive. If I can delete those other partitions with a third party tool, is there a risk they were somehow needed to boot windows? I can't figure out how to access them through windows. – James Tyas Feb 7 '18 at 21:18
  • You might have to re-format disk 0. Ugly, but it does work. – Ina Kahn Feb 14 '18 at 15:14

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