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1) I have an existing HDD in my computer that dual boots linux and windows using the traditional bios way.
2) I then took out the existing HDD and swap in a new HDD to install linux on it with uefi. It boots and reboots fine.
3) I took out the new HDD with uefi linux and put back the old HDD with bios dual boot. Old HDD boots fine.
4) I swap the old HDD with the new HDD that has uefi linux on it and it refuses to boot.
Any ideas on what could be the problem and how to solve it?
bootloader is grub for both HDD
Do you have UEFI enabled when you swap in the HDD with linux? If so have you checked the boot order in bios to see if there is an option to UEFI boot to grub? What exactly happens when you say the computer refuses to boot? – Dan Griffin – 2015-05-28T14:48:38.827
2It sounds like your BIOS/UEFI is modifying its parameters as a function of the boot media and getting confused, Please add screenshots of its boot info after steps 2 and 3. Use your camera if no other choice. – harrymc – 2015-05-28T16:03:16.513