Discussion in 'Storage' started by Grownman, Dec 21, 2012.
It still might be a outdated chipset driver issue.
I have almost spent an entire workday on trying to fix this same problem, and this finally worked!!
I had already tried Gparted before I read this, but I had not created the 746GB volume before, and this indeed did the trick! Gparted even told me that there was unallocated space that might not be recognized by certain OS's before it let me grow the region.
Cheers mate, you made my day!
I've been trying to get my Red WD 3TB to work for a day and tried everything but this is the only think that worked. I had to initialise the drive in Win XP thought cause I couldn't see it in admin tools in Win 7. Then set it to GPT with diskpart in Win 7 command prompt. WD should just write a utility that does all this. Segate did.
I run Windows 7 64bit Home Premium with a 1.5 TB internal HDD and found that I had to use 2 WD 2TB external HDDs to keep myself backed up and maintaining several system images. However, when I purchased my 2 new WD 3TB external HDs, I ran into this problem: One of the backup files could not be created. (0x8078002A) Additional Information: The request could not be performed because of an I/O device error, (0x8007045D).
In the searches that I performed to find a fix for this problem, most advised partitioning so I tried it and didn't like it as it allowed me a 2TB allocated partition and another partition just under 1TB which was unallocated and I could not get it allocated. I removed the partitions and came across the better solution after a bit of research. Using WD's Quick Formatter http://wdc.custhelp.com/app/answers/detail/a_id/3868/session/L2F2LzIvc25vLzEvdGltZS8xMzg5NDAwODg0L3NpZC9nVER6ajNLbA%3D%3D, I went through the steps in the video, However, because "Default" was not a choice, I chose to reformat to Windows Vista, 7, and 8 and, I was able to get the drive to work as a 3TB HDD should. WD is not the only external drive to get the error message as Seagate is doing the same. However, you have to find your own fix for Seagate, but don't go the way of the partitions. There is also an option for those who still use Windows XP.
I have a 2TB drive and one 1.81 is usable
As you should.
2,000,000,000,000 / 2^40 = 1.818989403545856475830078125 TiB
3,000,000,000,000 / 2^40 = 2.7284841053187847137451171875 TiB
The real mystery is why 750 GB? Looking through MBR information, I see no genuine explanation why it would hit a wall at 750 GB. 1 TiB would make sense (256 bytes per sector instead of 512 bytes per sector) but nothing lands on 750 GB.
All I can think of is that however you're trying to format it is specifying 750 GB maximum petition size instead of 3 TiB. This should be corrected by formatting it and explicitly specifying 2738484 MiB.
All those tools do is run a pretty or automated GUI on windows disk management commands.
I can force the size of USB drives with the command window and force the format to FAT or FAT32 options both unavailable to me in the GUI version of disk management too.
Yeah, diskpart is the way to go. Explicitly define the size of the partitions using it. If diskpart errors then there is something bigger going on.
Thanks for clarifying!
Hello! I'm having a very similar issue to this. I just installed a new Seagate Baracuda XT 3Tb to my system but only 746gb show up. The difference is that even in the BIOS it is recognized as a 746Gb drive. Im running it on a Asus Sabertooth Z77 with Windows 8.1 64 bit. I've already tried every fix i could find: used different programs and managers on windows but they never show unallocated regions , tried changing settings on the BIOS, updated the BIOS, tried different sata ports and even the Gparted fix above ( managed to merge a 150mb unallocated partition to the 746Gb lol). Any other ideas?
look at your disk manager. Make sure its a GPT partition. If not google how to change it to a GPT
I already changed it to a GPT partition. As a matter of fact, when i changed it from MBR to GPT the drive shrank about 50mb. No idea why. Should the BIOS recognize it as a 3tb drive? Or that is normal to have it as a 746gb drive even in the BIOS when having this issue?
Get the newer drivers
https://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&ProdId=2101&DwnldID=23060&ProductFamily=Software Products&ProductLine=Chipset Software&ProductProduct=Intel® Rapid Storage Technology (Intel® RST)&lang=eng
You can run the third one. And this has nothing to do with your BIOS so don't change anything
GPT requires more space than MBR. UEFI BIOS should recognize it as 3TB.
Issue with motherboard bios
Is your SATA controller configured to run in AHCI mode?
How big does the BIOS say the drive is? If the BIOS is misidentifying the drive size, then it's the motherboard's fault.
I tried it and the installer says i have a newer version of it already intalled.
I took some screenshots of the BIOS tabs. The drive is the ST33000651AS
And here at the Boot tab
Earlier i tried to set up the drive in a diferent SATA port ( ASMedia 1061 SATA controller ) but it didn`t fix the issue, so i returned it to the other port (Intel Z77 controller)
Not really my board detects my 3 tb drive as like 800gb but it works fine in windows
It says in their website that windows 8.1 is not supported.
Should i try a fresh install of windows 8.1? Maybe there are conflicting drivers.
Hard drives operate on firmware, not drivers. The only driver is for the controller (Intel Z77). Have you ever updated the Z77 chipset drivers?
I downloaded all updates available at Asus page regarding SATA and chipset. Installed all, rebooted but still nothing. Disk Manager says it is a 746.52 GB drive
Not Asus, Intel:
Then install Intel RST:
If it refuses to install, consider changing AHCI to RAID then installing Intel RST. RAID enables features that are disabled under AHCI alone. It is very doubtful AHCI is to blame for not seeing the entire capacity of the drive.
The drivers were up to date:
And the RST still didn't fix it:
I tried changing the SATA configuration to RAID but when I did, Windows blue screened while loading.
I don't think that would matter considering that the BIOS is miss-reading the drive size. I'm inclined to think there may be something wrong with the drive.
I don't like recommending this, but if your BIOS lets you, you could try setting the number of sectors, cylinders, and tracks in the BIOS manually if the BIOS is miss-reading that from the drive which might be the most likely explanation I can think of for the odd-size that comes up.
Am I the only one that noticed in Image 1 above there are 3 Drives plugged in -- P1 SSD, P2 Seagate, P5 WD -- but in the boot options in Image 2 it shows 2 different Seagate HDD's linked to P2?
Separate names with a comma.