[SOLVED] Boot Drive

[Fate_of_Fools]

A few months ago I built a brand new PC and started from scratch. Since then, I've had on and off issues with the new HDD and I would like to use my old one as the primary for a while to try to determine if the issue is HDD related, PSU, or whatever else it may be. My HDD from my previous PC is slotted and recognized, but not bootable with it's copy of windows 10. Is there any way I can make it bootable like this?

 

[USAFRet]

The drive from your old system would need a new install.