Boot Camp Assistant was unable to verify if the Windows partition contains a Windows installation

macos tips
1

Recently, I got Windows 10 on my MacBook Pro via Boot Camp. But the Windows partition isn’t big enough, so I want to remove it and start again with more space. Unfortunately, I can’t get rid of the Windows 10 partition due to an error reading “Boot Camp Assistant was unable to verify if the Windows partition contains a Windows installation. This may be because BitLocker is enabled on the partition. If so, disable BitLocker on the disk before removing Boot Camp.” If any of you know how I can remove the Windows partition, please help!

2

If you can’t remove the Windows partition within Boot Camp Assistant, erase it in Terminal and then retry:

  1. First, open the Terminal app from your Applications folder.

  2. Then run the command below to check the disk identifier of the Windows partition.
    diskutil list

  3. Here, you should see all disks connected to your Mac, including the Windows partition. Note down its identifier, for example, disk0s3.

  4. Replace the disk_identifier in the command below to erase the Windows Boot Camp partition.
    diskutil eraseVolume fat32 BOOTCAMP disk_identifier

  5. After the partition is erased, open Boot Camp to remove the Windows partition again.