Windows 10: Partitioning trouble after upgrade, clean install and revert back

Hello
Recently upgraded to w10 from w8.1 via the upgrade option, then proceeded to make a USB boot with w10 and performed a clean install.

However, something is fishy with my system and w10 so for now i want to revert back to w8.1 via a clean install of w8.1
When i installed w10 however i noticed i have an abundance of partitions, and preferably i would only like to have my SSD and HDD as optional storages spaces. I do of course not want to delete any necessary recovery or system partitions, but to me it seems like i currently have too many.

Which of the partitions in the picture below can i delete?
is it safe to delete all the recovery partitions when clean installing w8.1 from usb? meaning that will the installation create the necessesary partitions required by windows?

hope someone can help me out.
see picture for info(gjenoppretting = recovery)





:)

 

dual boot with free upgrade

can i do clean install on a different partition after win10 upgrade than revert back to win7 for my primary

 

Can I install back previous version of Windows after clean install of Windows 10?

Hi Lukas,

Welcome to Microsoft Community.

As per the query, you have questions with regards to reverting back to previous Windows after clean install of Windows 10.

Yes, you will be able to revert back to your previous Windows through the hidden partition. To revert back to previous Windows you should install Windows 10 on a different partition other than the hidden partition.

Also I would suggest you to download and install Windows 10 on your tablet through the ISO download.

Hope this information helps, please get back to us for further support on Windows. We will be glad to help you.

Thank You

 

you can delete All the partitions on Disk 1, C drive disk

the first 300MB partition is recovery for windows 8 and the last 457MB partition is recovery for windows 10

 

can i even delete the EFI partition? or should i even?
if i understand you correctly, ill then ,atleast before the install, only have 1 big C: partition in disk 1, and the D: partition in disk 0? and then w8.1 installation wil create a recovery partition during install?

thank you for the quick answer!

 

in by should i delete the EFI partition i mean is it suggested I do this? *Smile