You need to boot to an external recovery environment (RE). As that article said, there is one on a Win 10 Installation USB drive. When booted to the internal RE (Shift+Restart), the Recovery partition is considered in use & cannot be deleted/replaced.
Here are the Windows Image Backup & Restore screens I've seen (when doing a restore), but they are dynamic & may not show up unless applicable...
Screen 1: "Select a system image backup".
The latest image is the default. It shows drive name & letter, date & time, & computername. But you can choose to "select a system image" for screen 2.
Screen 2: "Select the location of the backup for the computer you want to restore".
Shows a list of external drives that hold an image (have a WindowsImageBackup folder). Each item in the list shows drive name & letter, date & time, & computername. All computername folders (if you've been renaming them) are listed per drive, like...
Seagate 2TB Slim Red (F:) 11/27/2020 6:40:06 PM PCRsComputer-19042.572
Seagate 2TB Slim Red (F:) 11/27/2020 6:40:06 PM PCRsComputer-19042.906
Seagate 2TB Slim Blue (E:) 11/27/2020 7:56:25 PM PCRsComputer
An Advanced button has two options:
a. Search for a system image on a network.
b. Install a driver.
Select an image, & click Next for screen 3.
Screen 3: "Select the date & time of the system image to restore.
If in doubt, select most recent.
Backups available for PCRsComputer Seagate 2T Slim Blue (E:)"
This screen shows the list of incrementals by date, & it names the partitions to be restored...
11/27/2020 07:56:25 PM EFI System Partition, C:, \\?\Volume{457EF4FB-B253- etc.}
11/23/2020 10:22:25 PM EFI System Partition, C:, \\?\Volume{457EF4FB-B253- etc.}
Incrementals happen when you put additional images into the default "computername" folder. I think it better to rename that folder after each image is made (I attach the OS Build to it) so that each image is separate & distinct. Otherwise, at some point, the incrementals would all be deleted automatically & replaced by a new base image.
Screen 4: "Choose additional restore options".
Has an option to "format & repartition disks" (greyed, if in the internal recovery environment). There is an "install drivers" & an "Advanced" button, which has two options preselected...
(a) Automatically restart after restore.
(b) Automatically check & update disk error information.
Screen 5: "Your computer will be restored from the following system image".
Shows date & time, computername, & names the partitions that would be restored. If running from the internal recovery environment (Shift+Restart), the Recovery partition isn't named because it is in use. I had selected the bottom one of screen 3, & screen 5 showed...
Date & Time: 11/23/2020 10:22:25 PM (GMT -5:00)
Computer: PCRsComputer
Drives to be restored: EFI System Partition, C: