Hitachi 3tb HDD Showing As 746gb ?

Bint Box · 27 Feb 2017 at 08:58

Hi,

Can anyone please advise me how to resolve a missing space issue with an Hitachi 3tb HDD? The drive is only showing up with 746.52gb capacity in windows 7 and also the same in a diskpart/list disk command prompt from a USB boot stick.

I have tried a couple of fixes such as installing the Intel RST driver (v11) and also deleting all partitions using gparted via a boot CD. However, none of these fixes have worked.

Any suggestions appreciated.
Bintos

brendy · 27 Feb 2017 at 08:59

Is it plugged directly in to the mainboard or via some other way, usb etc?

Bint Box · 27 Feb 2017 at 10:11

brendy said:
Is it plugged directly in to the mainboard or via some other way, usb etc?

It is a 3.5" internal HDD and is plugged directly into the main board (MSI P67 board). I have also checked in another motherboard (X58) and have the same issue of missing capacity.

Emlyn_Dewar · 27 Feb 2017 at 12:51

Format as GPT in diskpart

Bint Box · 27 Feb 2017 at 13:02

Emlyn_Dewar said:
Format as GPT in diskpart

Is there a command line switch that I use in diskpart to format as GPT?

If I use diskpart to clean all the drive, ie, deleta all partitions it is still only showing as 746gb before formatting. Are you saying that even if it is showing as 746gb unformatted it will revert to 3tb after a gpt format?

Thx

Bint Box · 27 Feb 2017 at 19:04

Update:

I tried the conversion to GPT using a Windows USB boot stick using the command sequence

diskpart
list disk
select disk (selected 746gb HDD)
clean all
convert gpt
exit

Rebooted the computer, the drive is still showing as 746gb. It seems to be in a locked state?

scrivz69 · 27 Feb 2017 at 19:13

See if there is a bios update, I remember reading some were when 3TB drives came out that some mobo's could not see the full capacity. 2TB drives were fine.

Bint Box · 27 Feb 2017 at 22:44

scrivz69 said:
See if there is a bios update, I remember reading some were when 3TB drives came out that some mobo's could not see the full capacity. 2TB drives were fine.

The two boards (x58 & P67) I have checked the HDD in are both showing other 3tb drives to their correct capacity, its just this particular HDD that is not showing to its full capacity.

scrivz69 · 27 Feb 2017 at 22:51

That's a head scratcher.

Bint Box · 28 Feb 2017 at 08:46

scrivz69 said:
That's a head scratcher.

HDD is heading outside for meeting with sledge hammer

bledd · 28 Feb 2017 at 08:54

Is it still in warranty?

ED209 · 28 Feb 2017 at 10:33

I have a X58 board with a external 3TB HDD which i use for backups and i have no issues seeing the full space.

how old is the HDD?

ed79 · 28 Feb 2017 at 11:50

I can't think of anything else to help, but can you post a screen shot showing the drive in Disk Manager?

Bint Box · 28 Feb 2017 at 13:36

bledd said:
Is it still in warranty?

It was manufactured in 2011 so I think it will be out of warranty by now