Hi. Unless I am mistaken user @wolfman seems to recommend using UEFI + MBR when partitioning your SSD for Ubuntu Mate
See Part 4
1 Shouldn’t you ALWAYS use GPT with UEFI?
2 And if using GPT should the partition flag for the UEFI boot partition or EST be simply ‘boot’?
3 For an SSD shouldn’t your SWAP partition be last, or does it matter?
4 And lastly, I have a 2 SSD UEFI setup, with each SSD dedicated to a different OS. The Windows SSD already has a EST.
Should my Linux SSD also have an EST, or does it matter?