Question

1

Recommended setup dualboot EFI

rated 0 times [ 1] [ 0] / answers: 1 / hits: 960 / 1 Year ago, fri, january 27, 2023, 1:45:40

Let me firstly update you on my current situation:

HDD 1: solid state drive (GPT) with Windows 8.1 in EFI setup (no secure boot, has EFI partition)

HDD 2: regular hard disk (MBR) with Ubuntu 13.04 alongside a documents partition in NTFS.

Now it used to be like this ever since I reinstalled Windows in EFI. In legacy mode Ubuntu booted fine (when I override boot to my HDD 2 in BIOS), although according to the Ubuntu tutorials it's not exactly recommended to have two boot methods.

I want to install 13.10 as clean as possible, and I can now decide to change setup. What can you suggest I'd do? I know it worked fine in 'hybrid' (legacy + EFI) and EFI is the way to go, but I want everything to be coherent and streamlined.

Answers

Only authorized users can answer the question. Please sign in first, or register a free account.

gliroopy

Add To Favorites

Follow

Total Points: 290

Total Questions: 115

Total Answers: 114

Location: Egypt

Member since Tue, May 3, 2022

2 Years ago

gliroopy questions

1 Windows 10 and Ubuntu dual boot - sleep/wake issues?

Fri, Apr 21, 23, 18:26, 1 Year ago

1 How to remove netplan.io but keep ethernet

Wed, Apr 19, 23, 09:44, 1 Year ago

1 On Ubuntu 20.4.3 Alt+Left Ctrl do not function as Alt Gr on Finnish layout

Sat, Sep 4, 21, 17:22, 3 Years ago

1 Do we have offline Python documentation browser in Ubuntu repositories to have one "point of service" to read and search the Python docs and APIs?

Sat, May 27, 23, 20:09, 1 Year ago

1 Autostart C++ compiled application upon boot

Wed, Apr 13, 22, 08:49, 2 Years ago

View All

answered 1 Year ago scrubuz · Accepted Answer

It can work either way. The trouble with the mixed-mode setup is that you need to be an expert to set it up and maintain it, particularly with two hard disks. The chain of possible options just becomes too complex to try to describe online or guide an individual through. The fact that it's working for you now means that you managed to stumble upon a working solution, but I wouldn't bet on that continuing to work when you upgrade.

In theory, there's no need to convert your second disk from MBR to GPT to boot in EFI mode. Your first disk presumably has an EFI System Partition (ESP), and when you install Ubuntu, it should detect that and use it to hold an EFI-mode version of GRUB 2. Even if it doesn't, you could manually install any EFI-mode boot loader you like after the fact, and it should work. That said, if there are bugs in your specific firmware or in Ubuntu that would cause problems with a mixed MBR/GPT setup in EFI mode, you can convert non-destructively from MBR to GPT using gdisk (which is in the gdisk or gptfdisk package in Ubuntu, but I don't recall which, offhand).