I have a Dell Inspiron 660s Desktop. It came with Windows 8. I created recovery CDs. I upgraded to Win. 8.1 and later to 10. I created a recovery USB drive for Win. 10.
The largest (by far) recovery partition is 11.83 GB. This came with the computer originally. I assume it is the Factory Recovery Partition, though someone speculated that it might be used for hibernation. My question is whether there is any reason to retain this partition. I am sure I would never want to return to Win. 8 and get back to where I am now by putting on vast quantities of maintenance. But I don't want to delete a hibernation partition or a one that might somehow be useful as a stage for a quick recovery to Windows 10.