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Disk Signature Collision While Cloning

Microsoft Windows has been sending out updates which have created some problems for those cloning mass storage devices like USB flash drives and USB hard drives. This article should help you resolve those issues.

The Disk Signature is a unique ID Windows will assign to a device inside the Master Boot Record or MBR. The disk signature is 6 bytes long and sits in the first sector of the mass storage device. The disk signature becomes a problem for those cloning flash drives or hard drives with either a software utility or a large duplication equipment like a USB duplicator. The disk signature compounds itself if a multi-partition device is being cloned.

Many times a multi-partition device is created in Linux and at the time of create only one disk signature is assigned to the physical device. However, if multiple units of those copies are put in a Windows computer, Windows will try and assign a disk signature to each partition. This will cause a collision.

There are different situations one could have a disk signature collision, so this is only one example.

GetUSB.info did a write up about this a couple months back, here is the full blog post:
https://www.getusb.info/only-1-usb-drive-can-be-use-others-are-ignored/

In addition, we found the following website which does a fantastic job about how one would edit the disk signature using a hex editor:
http://www.multibooters.com/tutorials/view-and-change-disk-signature-in-mbr.html

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Rich Gates

Administator for GetUSB.info GetUSB.info started in 2004 with the concept of providing USB information for everything USB related. At the time, USB was gaining momentum and every day new products, articles and news became published. Today, the site is focused on bringing technical information, tricks and hacks to USB related products. The site does publish off topic information as well, to keep the variety up. Please visit the footer area of any page if you or your company is interested in article or product placement via purchased advertising.

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