USB 's real capacity cannot be used

November 8, 2012 at 19:17:49
Specs: Windows XP , intel core 2 Duo

I've been using a software called USB image tool to back up the data that lies inside my 4gb USB thumb drive. recently I have accidently restored this 4GB image to another USB with the memory capacity of 8GB. As soon as I realized my error I formatted the USB but now I can see in the properties only 4GB memory is available to use. When I get in to disk management with this 8 GB connected to the PC I can see a partition of almost 4GB memory as healthy and the another partition of 4GB not allocated. Can anybody help me to reclaim this memory now not available for me to use.

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November 9, 2012 at 00:18:32

In Disk Management, right-click the existing partition on the 8GB pen drive and choose "Delete Volume". Now the entire pen drive space should show as "Unallocated".

Next, right-click it and choose "Create Volume" and accept the default size.
Now right-click it again and choose "Format"

When it's done you will have no unallocated space, the partition will be the correct size.

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November 9, 2012 at 01:26:50

yeah I tried to delete the partition which is healthy. But I do not get that option when I try it through disk management. The delete partition option on right click is disabled.The file format on USB is fat32. Do I need to format it as NTFS by using some software? Or is there any other setting that I need to configure before I get the option of delete the partition? Thank you in advance for your help

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November 9, 2012 at 05:27:44

Do you get an Extend Volume option? If so, then this should work as well.
The drive you copied may have had protections built into the firmware of the drive and you copied those over when you completely copied the drive.

If that does not work, you may need to use the same software to copy another 8GB USB drive onto it in order to correct the problem, preferably the same model and size.

By the way, if that software was a free download, I may have some use for it and a link would be very much appreciated. Thank you and good luck.

You have to be a little bit crazy to keep you from going insane.

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November 9, 2012 at 09:31:54

I was thinking to copy a USB drive of 8GB and correct the problem too. I have to find another 8 GB USB to do that. I think there may be other software that can do this but I did it with USB image tool. Here is a link where you can download it.

By the way I do not get any extend volume option.

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November 9, 2012 at 12:53:20

Also, If you check in Disk Manager and if it says 'Read Only' on the left side under the name of the drive, it is Write Protected. I tried this software to restore an image I just made from another USB drive, on a USB device that was reported as Write Protected (even though it was new blank and I recently put some files on it), it cannot perform this operation. Apparently this may also not work for you.

You have to be a little bit crazy to keep you from going insane.

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November 9, 2012 at 20:10:23

In the Disk manager it only says Removable 7.45GB online. I believe the 8Gb is reduced down to that volume due to conversions in bytes or something. If I get an even empty 8GB USB drive and try to restore using the same software I guess it would work . It's a matter of finding another 8GB one because all my friends have this 4GB ones.That's why I tried to fix it using other methods.

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November 10, 2012 at 06:01:04

Just to update you (been trying to solve this to maybe help you as I have already replaced the 'free' drive that is giving me the problem), I tried to overwrite it with an image and that did not work, then I tried to partition and format it (3 programs within Windows, and 2 bootable non-Windows disks - see bottom for details) and it still says Write Protected or Failed.

Windows 7 Disk Manager
Acronis WD version
Seatools for Windows
Pupply Linux Disk (3 built in programs)
Seatools DOS bootable Disk

Possible next step: Hammer (big one).
Good luck on yours. Sorry.

edit: I discovered that I can snap the case apart and modify it to hold my old 4GB stick whose case broke apart. Nice!!!

You have to be a little bit crazy to keep you from going insane.

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November 11, 2012 at 06:01:34

Thank you for all the help. I'm not sure what I would do with my USB. I can still use 4GB space that's there. So I might use it as a 4GB drive.

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