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I followed this Dual Boot Windows 10 and Linux Ubuntu on Separate Hard Drives guide.

I just got a second drive on my laptop. I have a old SSD that runs windows 10 and a new one that is completely empty. I followed the guide to dual boot ubuntu on that, but after following all of the steps. I boot straight to ubuntu, not even grub. In my BIOS, in the UEFI section I dont have the old SSD in boot order, because it is in Legacy format??? How can I fix this, so I can dual boot using grub? One possibility I thought of is copying all of the data from the old SSD to the new one, because it has the space for it. But I dont know how it will affect the copied data if the old one is in legacy format?

Asaf M
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Taavi Ansper
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1 Answers1

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To fix this issue, make windows 10 UEFI instead.

to do that use the windows built-in mbr2gpt in windows terminal or, alternatively, follow this video guide : https://www.youtube.com/watch?v=hfJep4hmg9o&feature=youtu.be&t=55

once you've done that reboot into ubuntu and run : 

sudo add-apt-repository -y ppa:yannubuntu/boot-repair && sudo apt update && sudo apt install -y boot-repair

this will allow both windows and ubuntu to appear in the boot menu.

tatsu
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