Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: External Hard Drive will not let me reformat it any way I try

27 Oct 2012   #31

x64 (6.3.9600) Win8.1 Pro & soon dual boot x64 (6.1.7601) Win7_SP1 HomePrem

Yeah, you have lag accessing time, so I would have expected slowness. One part of the puzzle is to not try to access the drive when you do diskpart. So, letting Windows "update|search" in the Computer window (the green status bar) isn't helping. I should have said "Only run the Command Prompt Diskpart. Shut down any other windows".

It helps if you are more specific - what diskpart commands did you try, what worked, what "hung", how long did you wait before deciding it was hung.... those sort of things. With the lag time you're experiencing, it might just take Windows a while. Or are you getting a timeout where diskpart just returns to the prompt.

So it takes 10 seconds for disc 1 to appear in diskpart - that's good information. The USB cable is another good idea - if you have a USB printer see if you can borrow that cable to test the drive. It's good to know about the warranty too.

What I'm looking for from you (you're my eyes over there) is something like this:
I ran this set of commands:

list disk
select disk # (make sure it's the correct disk)
list disk (selected disk identified with *)

list part
select part # (make sure it's the correct partition)
list part (selected partition identified with *)


and waited 5 minutes - diskpart seemed to be hung, so I (what did you do?)


I ran this set of commands:

automount scrub
remove all

and it took 30 minutes but they all ran
Without important information coming back from your side, this will take years. You don't have to be too technical, but if I am going to be of any help, I need to know what you tried, what failed and how, what succeeded. In this situation a little patience with the drive will help helpful - it might take 30 minutes for Windows to say "I got it, now what do you want to do with it" or Windows might say "I tried, can't get anything from the drive, here's your prompt back".

I know it's frustrating on your side too. Let's take a break from diskpart and thinking about it in a drive-centric way.

I posted this on another USB drive problem, but they haven't tried it yet. If the drive is ok and the driver is FUBAR you might have some luck.
Try following USB Driver - General Fix for Problems.

There are some references in the comment section that help if you run into issues following the instructions.

Particularly INFCACHE.1
  • search might not find it - make sure you have "Include system directories" set in your search options or just navigate to the directory cited.
  • delete might not allow you to delete it. Pooch skipped a step when (s)he defined changing the security. You also need to give full access to Administrators. or you can follow a comment ot the take ownership tut.
  • there is an interesting comment on a known MS bug - post #5 in the tut. The direct MS reference is Binary files in some USB drivers are not updated after you install Windows 7 SP1 or Windows Server 2008 R2 SP1 - download the version specific to your machine from the resolution section.
After you install Windows 7 Service Pack 1 (SP1) or Windows Server 2008 R2 Service Pack 1 (SP1), binary files in some USB drivers are not updated. For example, the Usbport.sys, Usbehci.sys, and Winusb.sys binary files are not updated.
There is also a reference to similar issues on MyDigitalLife, but other than some executable I don't know about (I'm always wary of .exe files when a bunch of instructions work), the information seems to be duplicated there (or here).
I'll stick with it until I run out of ideas or you decide that you'll exercise the warranty.


My System SpecsSystem Spec

 External Hard Drive will not let me reformat it any way I try

Thread Tools

Similar help and support threads
Thread Forum
What should I do before I reformat my hard-drive
Hello I have found a program in my programs folder that I know is a bandit and it won't delete. I also have so much 'stuff' in my folders that has been dumped there by long-deleted software that my 750mB hard drive was full. I had three versions of AutoCAD which I removed but its left loads of...
General Discussion
How do I Reformat Multi Partition External Hard Drive
I want to reformat an existing external HD for backup. Currently it has 3 partitions: 1 x Primary NTFS; 1 x Free Space; 1 x Logical NTFS. Can someone please advise how to reformat this into a single NTFS partition? I'm running Win7.
Hardware & Devices
Trying to reformat my hard drive.
My computer freezes after about a minute, so i was going to a total reformat but when i boot from the cd drive, and go into the advanced options, it wont let me delete or format my hard drive. Its just greyed out, along with delete. Any ideas? Also, sorry if i posted in the wrong section, im not...
Performance & Maintenance
Reformat External Hard Drive with Operating System
Hi, I have a hard drive I recovered from my old Dell laptop when the motherboard gave out. Originally, I just put it in an external hard case and have been using it as external storage. Now it is getting filled up, so I would like to reformat it to remove the OS partition (Vista) to give me...
Hardware & Devices
how do i reformat the external hard drive
hi all just a quick question. it's to do with this thread how do i reformat the external hard drive or what tools can i use thank you in advance
System Security

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 04:49.
Twitter Facebook Google+