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Windows 7: Lost half of my Hard Disk

11 Mar 2012   #11


Ok... Yeh I was originally storing my backup files in that partitioned hard drive, until I did the new windows. I have the sticker on my laptop stating it consists of 1000GB. HDD..

So yeh I am pretty sure..

Thanks anyways

My System SpecsSystem Spec
11 Mar 2012   #12

Windows 7 Ultimate SP1 64-Bit

I've done a bit of digging around and it seems your computer does in fact have two 500GB hard drives, which explains why the sticker tells you that storage space is 1TB.

User Reviews (93)

This 2nd hard drive thing is STUPID!

By Dwgibson2000 ( the full review
Can't understand why they would put slow memory and slow hard drive in a system with a fast processor. Acer support is the worst, makes Dell look great, may return it just for that reason because would hate to have a real problem and have to deal with...
Fast Processor, decent video card,HDMI port, full keyboard. I like the trackpad although had to speed it up all the way for it to act nice
Slow primary hard drive and NO Acer support on second hard drive bay! 2nd bay is why I gave up having an eSATA port. Called them with the numbers from previous post and they won't even talk to you about the parts. Manual is worthless! If I can't get...
End of quote.

Obviously, you need drivers for the second hard drive that has your data on it.

Go back to the link I gave you for Acer Support, and then download and install the SATA AHCI driver.

When you've done that, you might also want to check in device manager and see what drives are listed there and also check what shows up in Computer and Windows Explorer.
My System SpecsSystem Spec
12 Mar 2012   #13

I Tried

Yeh I tried installing the driver you mentioned but my computer said I already have a updated version of that driver. Plus I checked my device manager and found one disk drives I have added a picture of my device manager.

Thanks you

Aakash Dhawan

Attached Thumbnails
Lost half of my Hard Disk-test.png  
My System SpecsSystem Spec

12 Mar 2012   #14
Microsoft MVP

Windows 7 Ult. x64


That shows that your system only sees one physical hard disk. Assuming that the other one is still connected, then there seems to be a fault with either the disk and/or motherboard connection to the disk.

Lets confirm that : if you boot into your BIOS, how many hard disks are shown there?

My System SpecsSystem Spec
13 Mar 2012   #15


I am not sure But I think the Hard disk in Bios is knows as IDE, so there are 2 IDE 0 and IDE 1 and I found IDE 0 with no information after it and IDE 1 with some random number after it.

Hope this helps thanks..

AAkash Dhawan
My System SpecsSystem Spec
14 Mar 2012   #16

Microsoft Community Contributor Award Recipient

Windows 7 Ult x64 - SP1/ Windows 8 Pro x64

Re-seat IDE 0, open the back of your laptop and remove the IDE 0 hard drive, check for bent pins or dust, then re-install.
Check in BIOS if the HDD is showing.
My System SpecsSystem Spec
14 Mar 2012   #17
Microsoft MVP


How to access, reinstall HDD on your model:

My System SpecsSystem Spec
20 Apr 2012   #18

I tried looking physically

I was not able to find any connection problems with the hard-drive it seemed both were connected fine.. Not sure what is wrong.

Please help

My System SpecsSystem Spec
20 Apr 2012   #19
Microsoft MVP


Is the HD registering correctly in BIOS now? If not then I'd replace it if you need the extra internal storage.

You can try booting the HD maker's HD Diagnostic extended CD scan to see if it sees the HD and can repair it enough to run Disk Check .

Sometimes free Partition Wizard when installed to Win7 can see another HD or external not seen in Disk mgmt, then if you run it's System File Checker it can even bring it back to life. But this is a long shot only for us diehards.
My System SpecsSystem Spec
20 Apr 2012   #20

7 Ultimate SP1 x64

Expanding on what Golden already said, since your system accommodates and has two drives the quickest way to determine if this is in fact a drive failure (most likely as you say there is absolutely nothing listed in BIOS next to IDE 0) OR motherboard problem, would be for you to take the IDE 1 (working secondary) drive and put it in the IDE 0 (unrecognized primary) slot and check BIOS again to see if that drive is recognized from that slot. If it isn't, it's the motherboard, and if it is then the IDE 0 (unrecognized primary) drive has failed and needs to be replaced. Put the IDE 1 (working secondary) back in the other slot and go from there.

And be sure to discharge any ESD by touching bare metal or wearing an ESD bracelet before handling the drives, and only handle them by their sides.

Also, if its still under warranty contact Acer for replacement and restore of the operating system, whether its the drive or the motherboard unless you want to handle the drive yourself, go for it but you will need Acer to repair it if it is the motherboard.
My System SpecsSystem Spec

 Lost half of my Hard Disk

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