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Windows 10 HDD as an external drive by usb - Unallocated Space

Lee Wallis
Lee Wallis asked
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Last Modified: 2017-11-10
This is one I have come across a few times and never did find a solution. When the hard drive that contains the operating system is removed from a Windows 10 machine and placed in a caddy or similar to be attached to a different computer (running Window 7), The drive will not show up in my computer. When accessing Storage in Computer Management the Windows 10 drive (now an external drive connected by USB) shows as unallocated space and no drive letter can be assigned. The only option is to Initialise the disk but then the data would be lost (without some serious time spent on recovery). My guess is that this is to do with the 'GPT' rather than MBR partitions that was originally the case with Windows Drives... This doesnt however explain why it wont mount in Linux either or Mac OS (even when using Fuse software etc). I did try changing the settings for the drive so that Fast Boot/Fast shutdown wasnt enabled beforte I removed it, hoping this would enable it to mount but no joy. Whilst I have tried all the major platforms this question is really about getting it to mount on a Windows 7 machione

Does anyone have an explanation for this or perhaps a solution?

Thanks so much in advance,

Lee
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