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Cloned disk bootable

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I have cloned my Windows 10 SSD hard drive to a same size SSD drive. The process seems to function as it should. But when I take out the old drive and put in the cloned drive to test it is not bootable. I have tried this several times and I have tried this on a larger disk disk drive. In looking at the drive contents I saw the EFI hiddlen partition and thinking that was  interferring I cleaned the drive with diskpart.

I also booted the system and entered the BIOS and try to use the boot options to boot to the drive.

But no avail. What am I missing?

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Hi REK,

Are you starting the clone from in Windows or the bootable recovery media?  If not useing the recovery media, I would start there and use that instead.  

Altneratively, as an alternative to try, I would suggest taking a full disk backup and save the backup to an external drive or appropriate location and then restore the backup image to the new drive and see if that works better.  I prefer the backup and restore method with bootable recovery media as it has been very reliable for me and offers a backup for protection, whereas the clone process does not (the manual suggests taking an image before cloning to be on the safe side anyway).

Back to your original question though... depending on your bios, selecting a particular disk may not be the right way to boot Windows 10 on a UEFI system.  On my new gigabyte motherboard, I specifically have to select "windows boot manager" and make it the first option in order for the OS to boot.  If i select the drive, it will not boot on this motherboard and you may have a similar limitation on your board too.