Windows 10: Cloned my HDD to a new M.2 SSD. What can I delete?

I just cloned my HDD to a new M.2 SSD and I want to delete all files from the HDD to be able to make it a storage HDD only with no windows files on it at all. Can I delete everything from the HDD without my Windows 10 bricking and not being able to use my computer?

:)

 

Upgrading hdd to M.2 SSD

I got a new m.2 drive for Christmas and ive been trying to set it up so that my new SSD drive will replace my old hdd. I partitioned and cloned the new drive and it works well with HDD. However when I take the hdd drive out and turn my computer back on
it brings up support assist and then eventually tells me that there is no drive to boot from. Ive been looking online and I can't find what I did wrong.

 

cloning hdd to NVMe m.2

if i clone my hdd to a nvme m.2 using something like macrium will windows use the right driver for nvme on boot or would i need to reinstall to get correct drivers

 

M.2 cloned from SSD dive, bios problems

did you cloned only C partition to new m.2 dad ? .

did you see new m.2 is detected by bios? , if not means get updated bios and flash it .

or restore the bios default settings .

after cloned c partition, remove old ssd, then boot the Windows 10 dvd and try to repair startup repair