Linux Mint ran fine with MBRs disk and BIOS boot but can no longer install Linux Mint after converting to GPT disks and UEFI boot.
MBD: Gigabyte GA-990FXA-UD3 rev. 4.0
CPU: AMD FX-8350 (AM3+)
RAM: G.Skill RipjawsX F3-12800CL6D-4GBXH 4GB(2x2GB)
RAM: G.Skill RipjawsX F3-12800CL9D-8GBXL 8GB(2x4GB)
GPU: ASUS ENGTX560 DCII OC/2DI/1GD5 1GB
DSK0: SAMSUNG 870 EVO 1TB (2.5" SATA SSD) Windows 10 Home
DSK1: SAMSUNG 870 EVO 500GB (2.5" SATA SSD) Windows 7 Pro
Start: Disk0 & Disk1 MBR with BIOS boot
Repartitioned Disk1 and created 200GB unallocated space.
Booted the flash drive with Linux Mint Cinnamon 22.3 to live mode
While in live mode installed Mint in unallocated space.
Afterwords was able to boot to Windows 10, Windows 7, or Linux Mint
Change: Disk0 & Disk1 to GPT with UEFI boot
From Windows 10:
From command line:
* Converted Disk0 from MBR to GPT
From Disk Management:
Repartitioned Disk1 and created 200GB unallocated space.
Created Linux Mint Cinnamon 22.3 setup on flash drive. Selected GPT/UEFI.
Booted the flash drive with Linix Mint Cinnamon 22.3.
During setup I got an error.
MBD: Gigabyte GA-990FXA-UD3 rev. 4.0
CPU: AMD FX-8350 (AM3+)
RAM: G.Skill RipjawsX F3-12800CL6D-4GBXH 4GB(2x2GB)
RAM: G.Skill RipjawsX F3-12800CL9D-8GBXL 8GB(2x4GB)
GPU: ASUS ENGTX560 DCII OC/2DI/1GD5 1GB
DSK0: SAMSUNG 870 EVO 1TB (2.5" SATA SSD) Windows 10 Home
DSK1: SAMSUNG 870 EVO 500GB (2.5" SATA SSD) Windows 7 Pro
Start: Disk0 & Disk1 MBR with BIOS boot
Repartitioned Disk1 and created 200GB unallocated space.
Booted the flash drive with Linux Mint Cinnamon 22.3 to live mode
While in live mode installed Mint in unallocated space.
Afterwords was able to boot to Windows 10, Windows 7, or Linux Mint
Change: Disk0 & Disk1 to GPT with UEFI boot
From Windows 10:
From command line:
* Converted Disk0 from MBR to GPT
From Disk Management:
- Deleted all partition on Disk1
- Converted Disk1 to GPT
- Created partition on Disk1 and formatted NTFS.
Repartitioned Disk1 and created 200GB unallocated space.
Created Linux Mint Cinnamon 22.3 setup on flash drive. Selected GPT/UEFI.
Booted the flash drive with Linix Mint Cinnamon 22.3.
During setup I got an error.

