Windows 10: Why Two Recovery Partitions??

I noticed the increase recovery partition size too before I deleted it.

 

Just to clarify this topic:

If WinRE partition is set as partition 1 for instance when letting Windows Setup to partition disk, it can't grow (expand) when it needs more space while upgrading. Therefore it is better to manually partition a GPT disk placing WinPE partition after C: drive.

Because WinRE partition can shrink C: and expand backwards, it can now grow when needed, growing from original 450 MB upgrade by upgrade, every time shrinking C: drive:





Screenshot from DISKPART - How to Partition GPT disk Installation Upgrade Tutorials

However, in 16XXX builds there was an issue that made upgrade completely ignore original WinRE partition in upgrade process and create a new one for each upgrade:





This issue should be fixed now, at least I have not seen that happening again.

Having said the above, those users letting Windows setup partition the disk will also in the future get additional WinRE partition created after C: partition if continuously upgrading; at some point there's not enough space left in original WinRe partition at the beginning of the disk and when it can't grow when upgrade requires it, a new WinRE partition will be created.

 

My original Windows 8 clean installation put the recovery partition at the start of the drive. I see the logic of placing it at the end of the drive. Why did MS originally decide to place it at the start of the drive?

 

End of drive only if the disk does not contain any other partitions than GPT system partitions and Windows partition. After Windows partition C: and before first data partition if the disk contains additional partitions.

The point is, if placed manually it must be directly after C: partition.

Not a faintest clue!