Help reflect cloning gone wrong

Soldato
Joined
3 Jan 2006
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All along the watchtower
Ok so hands up, should have read the manual.

Anyway built a pc, from an old pc windows and everything works fine from the original nvme drive, but I also fitted a lovely new one.
So I tried to clone the old one onto the new one, but managed to end up with an extra partition, I didn’t like this and after watching a video discovered I could have resized it all so did the clone again.

Now I have 2 boot partitions on the new drive and uefi sees them in the bios, but which ever one I try to boot from doesn’t work, I can still boot from the old drive and see the now empty new drive.

Is there a way to sort out these boot partitions ideally I would like to start again on the new drive I.e completely clean it and maybe clone again but I can’t for the life of me get rid of these boot records that don’t work.

Any help gratefully received.
 
I was going to suggest diskpart, it's brilliant. Why disk management has to be so useless I'll never know. It can't even wipe a USB drive that's had windows installer setup on it with microsofts own tool! diskpart to the rescue every time.
 
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