Should I delete OEM Partition?

Jun 3, 2018
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My Hard Drive has Image OEM partition of 13GB and WINRETOOLS OEM Partition. Should I delete these? I've upgraded my motherboard, case, gpu and reinstalled winowds 10 (have to buy new license) so is there even any point having this Dell OEM partition stuff on it?
 
Jun 3, 2018
14
0
10


Ok, but should I buy OEM Windows key or Full Retial?