JakobKek :
I just cloned my OS from my HDD to my SSD using the Samsung Data Migration software. My problem is that I don't know how to clean my HDD so it contains no files because right now it has Program Files, Program Files x86, Users, Windows and Windows.old. I tried to just delete all the files in the HDD, but it didn't seem to work. Are these files supposed to be in both drives? How can I get this to work ?
1. Does the system boot properly with only the new SSD connected?
Test this to be 100% sure.
2. Windows commandline, and diskpart is usually needed to wipe that drive fully.
The
clean command is what you're looking for.
http://knowledge.seagate.com/articles/en_US/FAQ/005929en
https://www.windowscentral.com/how-clean-and-format-storage-drive-using-diskpart-windows-10
https://technet.microsoft.com/en-us/library/cc770877(v=ws.11).aspx
Be very, very careful which drive you are accessing.