HD recognized when attached externally but not when installed internally.

Steve Brannon

Honorable
Aug 25, 2014
5
0
10,520
I have an MSI laptop that came with a WD Black 750gb internal Sata system drive. I replaced it with an SSD and reconfigured the system with Windows 8.1 using the Msi Burn Recovery that comes with the laptop.

I took the original HD and hooked it up externally to the laptop and did a quick format with "HDD Low Level Format Tool", then used disk manager to format it as NTFS, gave it a label, a drive letter, etc.

At this point it comes up in File Explorer as drive D: with 700gb available.

This is when things get weird:

When I place this drive back inside the laptop and boot up (on the new SSD), Windows will not recognize the drive! It doesn't show up in Disk Manager, File Explorer, the low-level formatting tool; it doesn't even list it as a boot option in the bios when I start up.

I know the connection of the HD internally is sound (checked it several times) and I know the internal sata port it is plugged into is sound since I was using it with this drive before migrating my OS over to the SSD.

Does this have to do with 4K vs 512e LBA's since I formatted the drive through my external toaster before putting it back inside the laptop?

Totally baffled.