Select troubleshooting, then Reset your PC. Once this is done,reboot the PC using the USB recovery drive. The second command zeroes all the data and takes much longer (several hours), but it is more secure, if for example you want to sell or transfer the PC. The first command does a quick removal of the partition table from the drive but does not zero the data it will be invisible but possibly recoverable using data recovery tools. Once you are happy that it is safe to delete everything from the drive, type: If something goes wrong, your PC will no longer be bootable and you will need recovery media from the manufacturer, or to buy a new copy of Windows. If in doubt, back out and make a backup of the drive before proceeding. WARNING: the next step will delete all data on the selected drive.
Where n is the number of the drive as shown by list disk. It is normally obvious from the sizes which is which.
You will see two disks (or more) listed, one for the USB boot device, and the others the disk(s) in the PC. First, go to Troubleshooting and Advanced and select the command prompt. You could choose the Reset option from there, however you will still get the error. When you are done, you will be able to boot from the USB drive. This will copy the recovery partition from the PC to the USB drive.ģ. When creating the recovery drive, make sure the option to include the recovery partition is checked. Then run Control Panel, search for “recovery”, and choose Create a recovery drive.Ģ. It will need a capacity of around 16GB or more. To do this, first connect a USB drive that you are happy to have wiped. The problem seems to be that Windows 8.1 makes some changes to the drive partitions that make it incompatible with the Windows 8.0 recovery partition.ġ. This seems to be a common scenario in cases where the PC was supplied with Windows 8 and upgraded to Windows 8.1. The recovery drive on the PC is intact, but attempting to use the Windows 8.1 troubleshooting tools to “Reset your PC” (in effect reinstalling Windows) raises the error “A required drive partition is missing”. Here is the scenario: an HP all-in-one PC gets a virus and as a precaution the owner wishes to reinstall Windows.
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