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Windows 7: Unable to initialize external HDD in Disk Management due to I/O error

02 Dec 2011   #1
dmario84

Windows 7 Ultimate 64-bit
 
 
Unable to initialize external HDD in Disk Management due to I/O error

Hi all, I am hoping someone would be able to help me out on this problem. I'm running Windows 7 Ultimate 64 bit.

Problem:
Windows detects my external HDD but doesn't show up in My Computer. Drive is detected in Disk Management, indicated as "not initialized". When I try to initialize the drive, it gives me the following error,

"The request could not be performed because of an I/O device error"


What I've tried doing:
  • Do a clean instll of windows - Don't work
  • Uninstall external HDD driver, turned off power, turn it back on again, reinstalled driver - don't work
  • Tested the same external HDD on another Windows 7 system - No problems, detected and able to access
  • Tried plugging on different ports - Don't work


After hours of searching through the web and reading forums, I realized that this is quite a commonly faced issue. Thank you.


My System SpecsSystem Spec
.

03 Dec 2011   #2
JimLewandowski

 
 

Control panel -> Administrative tools -> Event Viewer

Click on the caret > next to WINDOWS LOGS. Then click on SYSTEM. There ought to be a traced event of some kind with a physical I/O error.
My System SpecsSystem Spec
03 Dec 2011   #3
dmario84

Windows 7 Ultimate 64-bit
 
 

Quote   Quote: Originally Posted by JimLewandowski View Post
Control panel -> Administrative tools -> Event Viewer

Click on the caret > next to WINDOWS LOGS. Then click on SYSTEM. There ought to be a traced event of some kind with a physical I/O error.
Is there anything in particular that I should be looking for? If so what would be the next step I can take to solve this issue?
My System SpecsSystem Spec
.


03 Dec 2011   #4
JimLewandowski

 
 

Quote   Quote: Originally Posted by dmario84 View Post
Quote   Quote: Originally Posted by JimLewandowski View Post
Control panel -> Administrative tools -> Event Viewer

Click on the caret > next to WINDOWS LOGS. Then click on SYSTEM. There ought to be a traced event of some kind with a physical I/O error.
Is there anything in particular that I should be looking for? If so what would be the next step I can take to solve this issue?
Since I've never ever experienced an I/O error and know of no one who has (except yourself), I would think if you click and open the events there, there ought to be something that addresses the I/O error.
My System SpecsSystem Spec
03 Dec 2011   #5
dmario84

Windows 7 Ultimate 64-bit
 
 

The only indication that I see is regarding USB controller. I've already tried updating the drivers but to no avail. I'm not sure if updating the BIOS would help.. I would only do that as a last resort
My System SpecsSystem Spec
04 Dec 2011   #6
jumanji

Windows 7 Home Premium 32 bit
 
 

Your first concern should be to back up any/all important data on your inaccessible external HDD.

Since you said that the external HDD could be accessed on another Windows 7 system, I would suggest that you first copy all data in it to that system or any other external hard drive/storage media.

With all data safely backed up, you can try the following process:

Solution No. 1: Format your inaccessible external drive with HP USB Disk Storage Format Tool. HP USB Disk Storage Format Tool - v2.1.8 Download - EXTREME Overclocking Is your drive accessible now?

Solution No.2 : Download and install the Minitools Partition Wizard Home edition. Best Free Partition Manager Freeware for Windows 7, Windows Vista, and Windows XP 32 bit & 64 bit. MiniTool Free Partition Manager Software Home Edition. .Try Partition Recovery on your inaccessible external drive. ( You may also download the bootable CD version ISO, burn it to a CD/pendrive and boot from it to run the Partition Wizard to try the Partition Recovery).
My System SpecsSystem Spec
04 Dec 2011   #7
1Bowtie

Windows 7 Home Premium 64 bit
 
 

Also a screen shot of Disk Mgmt w/ the external HDD connected might give a clue whats not working.
My System SpecsSystem Spec
Reply

 Unable to initialize external HDD in Disk Management due to I/O error




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