Question: Hi folks, I just recently replaced my 1TB WD Black which I used for games/etc with a 4TB WD black for more room, but then I got a message that I dont have a valid boot device. My OS is installed on another SSD (which was untouched) so I am confused as to why this is happening.
In BIOS, it recognized all the drives. I bought an external enclosure to see if having the original HDD would boot properly, and it did, so I suspect that I’m not doing something right in the BIOS settings, or that there is something important on the replaced drive that is essential to boot. I did also upgrade from Win7 to Win10 with both drives plugged in at the time, which from my cursory searches may be causing my issue.
Where do I go from here? I’d like to avoid relying in the replaced drive as it is now 6 years old. Thanks!
Answer:Sounds like you had the 1TB drive attached when you installed Windows and part of the OS (through no fault of your own) was written to that drive. For whatever reason, Windows is known to do that. Your best bet is to simply reattach the 1TB drive AND install the 4TB drive and use them both. Later, when you get around to a clean Windows install, only have the SSD installed in the system so this doesn’t happen again.
-Wolf sends