4TB Seagate Drive Causes A2 Error Code

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toms900

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Mar 10, 2016
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Okay so I've been searching around and haven't been able to find an answer. I recently purchased an 4tb Seagate drive for my computer and it causes my computer to freeze before I get to the splash screen. I've tried everything including flashing my bios, clearing my cmos, testing different SATA connectors and cables, I even tried a new drive to see if the one I had was faulty, same problem.

I know it's the drive because my computer boots up just fine when it isn't plugged in, and when I do plug it in it freezes on A2 error code again. The weird thing is, both times when I first got the hard drive and plugged it in the computer booted just fine, then I formatted the drive to exFAT using the GUID Partition Tables (GPT). Once I did this I could write to the drive and stuff, but once I restarted it after initially doing this I started getting the A2 error code.

These are some of my specs:

  • ■ 2 WD 1 TB drives
    ■ 1 SSD with Windows 10
    ■ MSI Z77A-GD65 motherboard

If anyone knows of any solution to this, or whether or not it's a bug and there's nothing I can do, please let me know.
 
Solution
SuperSoph_WD


Hello & Welcome, agrin95!

I'd advise you to start your own thread in the Storage section of the community so that more people would be able to see your post and share their opinion on the matter. I'd do my best to get engaged in the discussion.
I'm sorry to hear about your issues with the WD Blue drive, though! :( Can you share if you are able to get it...
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SuperSoph_WD

SuperSoph_WD

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Jul 30, 2014
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Welcome to the community, toms900!

I'd recommend you to try your new 4 TB HDD on another computer and check how it will get recognized there. If you don't have access to another PC, you can also try plugging the HDD externally via a SATA-to-USB cable (+ an adapter) or through a docking station. This way it shouldn't affect your system's performance and you'd be able to troubleshoot it using the HDD manufacturer's diagnostic tool to check up on the health and SMART status. Another way to test it would be to use a DOS version of their software. It will allow you to perform the same tests internally without booting into Windows.

Since it's a relatively new hard drive, it should still be covered by the warranty. I'd advise you to check that and even RMA it, if all else fails.

Hope this helps you, though. Keep me posted & Good luck! :)
SuperSoph_WD
 
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toms900

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Mar 10, 2016
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Yeah I can probably try and test it on a friends computer. The only thing is though, I really doubt something is wrong with the drive. I just bought it the other day to replace the one I bought last week because that one didn't work. So I'm assuming it's something with my motherboard, but I don't know what it could be since all my other hard drives run just fine. Does the fact that it's 4tb have anything to do with the failure?
 
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agrin95

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Mar 10, 2016
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I'm having this exact problem. I have an MSI Z77A-G45, an SSD with Windows 7, and a 1TB WD Blue HDD and after cycling SATA cables and ports, and I've determined that the problem is with my HDD. I can boot fine when it is disconnected. I'm going to try and hook my HDD up to my roommate's computer.

In your opinion, is the data on my drive still there or is the whole thing fried?
 
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SuperSoph_WD

SuperSoph_WD

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Jul 30, 2014
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Hey there again, toms900!

Indeed, you should try the HDD on another PC as this is the best way to determine whether or not it's the source of the issue. Unfortunately, sometimes hardware components can get damaged while shipping to the end customer. What I'd advise you to do in this situation is to contact the HDD manufacturer's customer support and let them know if there's anything wrong with it. As I already mentioned, you should be able to RMA it and get a replacement from them.

Best of luck! Let me know if you need further assistance with the troubleshooting!
SuperSoph_WD :)
 
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SuperSoph_WD

SuperSoph_WD

Glorious
Jul 30, 2014
6,758
3
45,960


Hello & Welcome, agrin95!

I'd advise you to start your own thread in the Storage section of the community so that more people would be able to see your post and share their opinion on the matter. I'd do my best to get engaged in the discussion.
I'm sorry to hear about your issues with the WD Blue drive, though! :( Can you share if you are able to get it detected in Disk Management or BIOS, at least? Give it a try in the other computer and let me know how it goes.
You can also try to troubleshoot it externally via a SATA-to-USB cable with an adapter or a dock station. If you manage to recognize the WD Blue anywhere, you should definitely run the QUICK and EXTENDED tests from WD's Data LifeGuard Diagnostics for Windows. The utility will help us determine the health and SMART status of the drive.

Hope this helps you. Keep me posted!
SuperSoph_WD
 
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Solution
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Juan003

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Apr 28, 2016
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I am on the same boat.
Seagate 4TB drive, GPT GUID partitioned, exFat file system.

Worked fine when first plugged in, upon reboot A2 error at boot on BIOS screen and it just hangs frozen, no boot.

When I disconnect it, everything works fine.

I freaked out because I bought it just to backup my failing 1.5 TB storage drive and just offloaded the data over to the new 4 TB drive. So I connected it via SaTA to USB adapter and it works fine and I can read and write to it no problems.

However, when the PC reboots, it now hangs frozen on B4 error code at the BIOS screen. When I unplug the USB cable, it boots fine and everything works when I plug it in after booting up.

I can never leave it plugged in during boot process. However I can leave other USB hard drive or flash drives plugged in and boot fine.

Yes, I do not have USB at the top of the boot order, checked that already.

Anybody think the 4 TB Seagate is defective? I have 1 more week before my 30 days is up for returns. The original poster got a second one and has same exact issue with both if his.

Please advise.

 
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SuperSoph_WD

SuperSoph_WD

Glorious
Jul 30, 2014
6,758
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Welcome, Juan!

You should consider creating your own thread, so that more people are able to see your issue and, hopefully, land a hand.
However, I do believe that there might be something wrong with your HDD if it interferes with the bootup process like this. :( I'd strongly advise you to backup all the data from that drive somewhere else as well and make sure it's safe and sound. Afterwards, use the HDD manufacturer's brand-specific diagnostic tool to check up on the health and SMART status. Make sure you run both the short and the long tests and their DOS version (if needed).
If any errors pop up, you should definitely get in touch with the manufacturer's or reseller's customer support and replace the hardware.

Best of luck! Keep me posted if you have more questions!
SuperSoph_WD
 
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