Factory Reset for Surface Pro 3

My first post, so be gentle!
Just got an oldish Surface Pro 3 and I would like to do a 'factory reset'

I'm trying to add an attachment


If I have uploaded the disk management image correctly, there seem to be more partitions than I was expecting!
Would anyone like to suggest what the previous owner(s) have done?
Also where (which partition) , and how would I go about a factory reset.

Please let me know if this post is in the wrong area and if I've broken any rules or conventions.
Cheers
Jack

Go here to read how it is done:

How to Factory Reset Windows on a Microsoft Surface | Digital Trends

Enjoy!

The default BIOS UEFI GPT partitioning will have four partitions with one hidden partition:
https://docs.microsoft.com/en-us/win...ive-partitions

Older Windows versions when clean installed had the recovery partition on the far left as the first partition.

During upgrades Windows may want to increase the size of the recovery partition.
There was no room in the first partition so Windows created a new partition.
The first recovery partition was disabled.
The end user had approximately 500 MB consumed by this partition.

Newer Windows versions now install the recovery partition on the far right.
This allows an increase in size during upgrades.

For your drive the EFI partition is larger than the typical 100 MB.

For the leanest Windows 20H2 you can clean install since the license is on Microsoft servers.
A factory reset will install whatever Windows version came with the computer.
You would then need to perform an upgrade to get 20H2.

This link allows you compare the pro / con of factory reset vs clean install:
Reset Windows 10

Clean Install Windows 10

https://www.microsoft.com/en-us/soft...load/windows10
Download Windows 10 ISO File
Create Bootable USB Flash Drive to Install Windows 10