How can I force delete a partition in Windows 11 or Windows 10?

If you delete delete a partition in windows 10 or boot partition (like EFI, Recovery, or the C drive), your computer might refuse to boot afterward. That's a nightmare—you’ll need to fix it using recovery tools or a bootable USB. I’ve seen people accidentally wipe their EFI partition, and then they spend hours trying to recover their OS. After deleting a partition in Windows 10, if you don’t merge the space properly, you might end up with unallocated space that isn’t usable immediately. Also, the remaining data on the drive could become fragmented, leading to slower performance until you do proper defragmentation or partition resizing.

From my side, I’d say always back up your data before tinkering with partitions—it's like insurance. Also, if you’re deleting something critical like a recovery or system partition, think twice or do it from a bootable environment. It’s safer that way because Windows won’t block you from deleting system partitions, but your system won’t boot if you delete the wrong one.