Backup failed error 0x8078002A on an external 3Tb drive

louwin · 17 Mar 2012

I bought 2 new 3Tb Seagate Expansion drives model STAY3000300.

I tried to "Create a system image" and both 3Tb drives were presented as possible destination discs. I selected one of them and after a couple of messages about preparing and starting the following message was displayed. (same message on the other 3Tb drive as well)

The backup failed

BIG RED BAR

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)

The system is Windows 7 64bit and bang up to date with Windows update. The system disc is a OCZ Agility 3 120Gb SSD.

Another strange thing is I have been doing backups to another external disc for many months - a 1Tb Iomega portable external.

The MAIN BU file is about 26Gb and, yes, all my discs are formated as NTFS so it is not a file size issue.

I am not desperate as I have other discs to backup to but I am curious why the backups fail on the new 3Tb external drives?

wanchoo · 17 Mar 2012

Welcome to Seven Forums.

You might find he following links helpful for answering your question and solving the problem:

01. back up error I/O 0x8007045D
02. Backup and Restore - 0x8007045D Error

Good luck.

louwin · 18 Mar 2012

Thanks for your response but I suggest it is incorrect.

I ALWAYS make 2 system images, one after the other to 2 different drives. So I

1) Imaged to drive F:, internal 1.5Tb Seagate - success in 4 minutes
2) Tried to image to K:, external Seagate 3Tb - wrote one 44Mb file and failed.
3) Tried to image to L:, ditto, same as 2) above
4) imaged to drive Y:, external 1Tb Seagate - success in 15 minutes.

So an image worked before AND after the failures.

So any problems with shadow copies etc aren't relevant

wanchoo · 18 Mar 2012

If you have used the Windows Imaging Tool then what I can suggest now is to try and create the image with third party Apps like Macrium Reflect or Acronis TrueImage on the drives where the back up failed and see if that succeeds.

RudeBoySes · 18 Jun 2012

guys.. i know this thread is old but i wanted to share my experience as it may help others ..

With the growing trend of larger and larger HDs..
Manufacturers had to come up with an efficient way to produce high capacity at a relatively small size, efficient, and error correction.

They came up with Advanced Formating (4KB Logical Sectors).
this is the format used for drives larger than 2TB.

I just bought a Seagate 3TB External GoFlex drive yesterday and was pulling my hair out because i kept getting an I/O error. I had no idea it was due to the size. Infact, i was using a 1TB External with no problems.
After some research, i realized it's related to the 3TB & it's sector size.

Windows

The main reason i bought such a large drive was specifically for use with Windows 7 Backup & Restore.
Im able to mount the backup in Windows Environment and retrieve files.
It's quick, fast, reliable, and have been using it since Windows 7 was released.

So i returned it today for a 2TB GoFlex..
as soon as i got home.. i tested it..
and vioula.. the backup completed successfully :)

F.Y.I
Becareful of that 'hidden partition' Windows 7 creates.
it's known to cause errors with backups as well.
It should be avoided at all cost.

quickly.. here's how:
when you get to the HD setup screen during installation..
- partition as normal
- Windows 7 will force you to create that hidden partition.. go ahead and create it.
- now delete 1 partition.. or if you only have 1 .. then delete it.
- now highlight the 'hidden partition' > click 'extend' > it will ask for size.. enter the amount left on your HD.
- click format
- and vioula.. it's a regular partition now :)

from what i understand.. the reason the 'hidden partition' causes errors is because it becomes full or something.
which is ridiculous.

ANOTHER TIDBIT:
Western Digital came out with a fix for their 3TB drives.. but it causes problems that they are not reporting. Basically it emulates Logical 4k sector. Thus what the OS sees, what is actually there, and what applications see are all different. That emulation is the problem. it causes data to be misplaced, data innaccuracies, missing data, random errors, performance problems, etc. This should only be used as a last resort. if the return policy on your drive has passed. This is not a true fix, just a quick-fixer-upper to please their clientel. But i have to give them credit, atleast they provided a fix for their customers.!

ROLA · 18 Jun 2012

I bought a new Toshiba,Canvio 3.0 plus,1TB hard drive,and tried to do a complete back up of my C drive on my laptop.And I got a error massage ( OX80070070 ) PCWDiagnostic.Can I get help with this problem?My internal C hard is only 40GB,the massage said there was not enough space for back up.How could that be? WHEN I am trying to back up 40GB ON A 1TB HARD DRIVE.

mjf · 18 Jun 2012

If you upload a full Disk Management screen shot showing showing you OS HDD and the Toshiba HDD it could help
Screenshots and Files - Upload and Post in Seven Forums

RudeBoySes · 18 Jun 2012

you have to expand the 'hidden partition' using dispart..
or somehow clean it up to make room..
you need atleast 40mb of empty space to do a successful backup.
stupid Microsoft.
i got rid of mine and forced Windows 7 to use a directory in Windows itself to avoid this.

the 'hidden partition' is the root of all evil.
search on how to do it. . it's very complicated using command line.
i've read some have had success deleting/disabling the Journal, as a temp solution.
a permanent fix is to do a clean install and get rid of that hidden partition.
the reason it's causing the error is because it's filled up.
you can check by right-clicking 'My Computer' > 'manage' > disk Management > and you'll see that hidden partition.

i did a clean install, and got rid of that stupid 'hidden partition'...

quickly.. here's how:
when you get to the HD setup screen during installation..
- partition as normal
- Windows 7 will force you to create that hidden partition.. go ahead and create it.
- now delete 1 partition.. or if you only have 1 .. then delete it.
- now highlight the 'hidden partition' > click 'extend' > it will ask for size.. enter the amount left on your HD.
- click format
- and vioula.. it's a regular partition now

Jeffecito · 31 May 2014

I found this at Seagate.com. It's a work around using Seagate's DiscWizard, which can be found at:

DiscWizard | Seagate

Hope it helps,

Jeffecito

Why won't my 3TB or 4TB external drive work with Microsoft Image Backup in Windows 7?

Microsoft Image Backup in Windows 7 will not support Seagate 3TB and 4TB drives (along with most other external drives above 2.1TB). This article explains.

Microsoft Image Backup in Windows 7 will not support Seagate 3TB and 4TB drives (along with most other external drives above 2.1TB).
Microsoft only supports drives that are set up to use 512 byte blocks as destinations for image backups. These drives are compatible with all other Windows functionalities.
To allow 3TB and 4TB drives to work in older operating systems like Windows XP, these drives are configured using 4K byte blocks.
Microsoft has added support for 4K drives in Windows 8. See here for more information.
For Backup Plus and GoFlex drives, the bundled software will allow you to backup your data.
For Expansion drives, consider using DiscWizard as an alternative to Microsoft's backup.
For more information about the limitations of Windows Backup and Restore, please contact Microsoft.

KWD7651 · 04 Oct 2014

My external drive is a 3 TB drive that I've been using for the backup of my C Drive. I had much the same trouble when I wanted to backup my C drive onto this external drive. The problem seemed to be that the Backup and Restore in the Windows Control panel was ultimately the cause of the problem. When I unchecked the Windows Backup in the Action Center and then used the built in backup process that came with the external drive all the problems were eliminated. I can now backup all my work onto this 3 TB drive. Check to see if your external drive has this built in process and if so, then give it a try.

Backup failed error 0x8078002A on an external 3Tb drive

Backup failed error 0x8078002A on an external 3Tb drive

your reply isn't the solution :(