HDD 3TB Showing up as 746GB

Tennotsukai · Jun 24, 2016

Hey guys, I use this 3TB HDD for storage and it has always worked fine. Today when I booted up teh computer it was missing from My Computer and when I open disk management it says it is unallocated and only has 746GB capacity.

It shows up on BIOS as it always has however.

Been trying everything I can find online but nothing works.

Running Windows 7 Ultimate 64bit.

Yes it's in GPT.

Any ideas?

Tennotsukai · Jun 24, 2016

Found the solution for that, but it is still unallocated. How do I fix that without losing the data?

SuperSoph_WD · Jun 24, 2016

Welcome to the community, Tennotsukai!

I'd recommend you check how the HDD appears if you connected it to a different computer and try to format the drive through Disk Management there. If the issue still persists, I'd suggest you use an external enclosure/docking station to check if the re-formatting will work properly from there. You mentioned that it shows in BIOS, so how is the HDD capacity listed there?
You might also check how it will get detected after a BIOS reset.

Keep me posted with the troubleshooting & Good luck!

SuperSoph_WD

Faux_Grey · Jun 24, 2016

TestDisk has saved me from this type of thing a couple of times, it can scan the drive for the old partition layout and attempt to rebuild it.

https://www.cgsecurity.org/wiki/TestDisk

Edit:

If it was an external hard drive and you've just made it an internal hard drive, re-test the drive in the external enclosure.

ArtPog · Jun 24, 2016

This seems to be a problem that crops up from time to time with large-capacity disks. While I haven't personally experienced the problem it seems that the solution that's frequently mentioned from time-to-time appears to be installing the Intel RST driver (obviously for Intel-based systems). See...
https://downloadcenter.intel.com/product/55005/Intel-Rapid-Storage-Technology-Intel-RST-
(or check with your motherboard's manufacturer for a recommended driver).

Tennotsukai · Jun 25, 2016

Thanks everyone.

I ended up cleaning the whole drive before I saw all your answers. Lost the data but that's what happened, so that's that.

Will still try out the thing Faux said, just to check if I can get one or two files I sort of need.

Compeletely forgot about the BIOS reset thing SuperSoph mentioned. Oh well.

I'll leave the link to the driver installer I used that solved my problem just for future reference if anyone else runs into the same problem and so that people who haven't had the problem can avoid running into it.

For the driver to use I went here:

https://downloadcenter.intel.com/download/25165/Intel-Rapid-Storage-Technology-Intel-RST-RAID-Driver?product=55005

I got both the drivers and the RST installer in the same folder just to be sure everything worked well. After that, I just ran the installer and there it was, 3TB. The installer required me to reboot 2 times for whatever reason.

However, in the BIOS it always shows up as 750GB. But, it's an old motherboard with a LGA1366 socket and all the drivers are there up to date, so I'm guessing that's how it's going to roll for me.

So far so good.

Search

HDD 3TB Showing up as 746GB

Tennotsukai

Commendable

Faux_Grey

Tennotsukai

Commendable

SuperSoph_WD

Glorious

Faux_Grey

Honorable

ArtPog

Admirable

Tennotsukai

Commendable

TRENDING THREADS

Latest posts

Moderators online

Share this page