I got a 3TB Blue to replace an old Seagate 500GB drive.
Windows 7 x64 system, AMD chipset.
Acronis WD Edition cloned the old drive to the new one, but, it only shows up as 748GB in Windows.
Note, when I did the cloning using a USB enclosure it allowed me to do the full 3TB.
When it didn’t boot, I connected it internally, and re-did the cloning, noticing that it only allowed 748GB to be allocated on the new drive.
My mobo/OS apparently doesn’t support GPT, so it has to stay MBR.
After successful cloning and booting with the drive internal, I decided to try and fix it with GParted.
Booted into GParted, and expanded the partition to 1.9TB, and it won’t boot.
Changing it back to 748GB and I can boot again.
Tried a lot in GParted, it was able to give me 1.9TB plus 1TB partitions even though it’s MBR, but anything beyond 748GB allocated means Windows won’t boot.
Just to clarify this point, in Linux, the full 3TB drive is visible and able to be formatted.
In Windows, it shows up as 748GB, completely allocated.
If I allocate more than 748GB outside of Windows, it won’t boot.
Any size less than 748GB allows boot.
BIOS appears to be fine, just to re-iterate. BIOS shows
I see lots of posts like this, and people fix it with Intel RST drivers, but my system is AMD.
This feels like a driver issue of some kind, but I don’t see any evidence of there being drivers for me to check.