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Guide: MultiBooting UEFI

Going Bald said:
Did you boot to UEFI and make sure the Mac OS was set as first in BBS boot order?
Click to expand...

Yup. Actually I solved it by installing easyuefi and creating the a boot entry for macOS boot file bootx64.efi and made it as a first entry. I did this procedure in windows.

I wonder if this is permanent, say I install windows update.

Just renaming the windows boot file didn't work because it gave "no boot drive found"

Thank you.
 
Going Bald said:
Adding Ubuntu is a matter of shutting down Windows, removing the Win10 USB installer, inserting the Ubuntu installer and booting it. When you get to the Grub2 screen, select the first option to try Ubuntu and hit enter or let it time out and boot.
At the desktop check your access to the internet. Hopefully it works. Double click on Install Ubuntu icon on the desktop, select a language and, if your network is working and fast, click to select the update and install 3rd party drivers, click continue. Next screen, select Install Ubuntu alongside Windows Boot Manager. This ensures the Ubuntu boot files are added to the UEFI partition in an Ubuntu Folder, just like the Windows folder. Click Install Now.
View attachment 202438
Ubuntu installer will create your swap and Root for you - click Continue:
View attachment 202439
And install Ubuntu.
Click to expand...

Hi. Im guessing i can skip the Windows as I'm just dual boot with macOS and Linux Mate? Im wanting to dual boot Linux Mate alongside macOS in UEFI. I've noticed that the installation screen of Ubuntu doesn't show ESP I'm guessing that your installing in Legacy? I had a issue before when installing Linux alongside OS X without Windows. My guess if that Linux sees a partition as EFI it'll install the grub boot loader to the ESP/EFI Partition.

Nice guide btw :)
 
VioletDragon said:
Hi. Im guessing i can skip the Windows as I'm just dual boot with macOS and Linux Mate? Im wanting to dual boot Linux Mate alongside macOS in UEFI. I've noticed that the installation screen of Ubuntu doesn't show ESP I'm guessing that your installing in Legacy? I had a issue before when installing Linux alongside OS X without Windows. My guess if that Linux sees a partition as EFI it'll install the grub boot loader to the ESP/EFI Partition.

Nice guide btw :)
Click to expand...
No, it is installed EFI.
If you are skipping Win10 and want only Mac OS and Ubuntu-Mate, select "something else".
Set up your partitions in the free space on the drive.
When it comes time to select a partition for the boot loader set it (assuming drive is sda) for the efi partition sda1 with mount point /boot/efi

You can set it up ahead of time if you want - boot the live dvd and open a terminal (assuming your Mate partition is sda3), type:

Code: 
sudo mkdir /mnt/efi
sudo mount /dev/sda1 /mnt/efi
sudo mkdir /mnt/root
sudo mount /dev/sda3 /mnt/root
sudo grub-install --force --removable --no-floppy \ --boot-directory=/mnt/root/boot --efi-directory=/mnt/efi /dev/sda
 
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Going Bald said:
No, it is installed EFI.
If you are skipping Win10 and want only Mac OS and Ubuntu-Mate, select "something else".
Set up your partitions in the free space on the drive.
When it comes time to select a partition for the boot loader set it (assuming drive is sda) for the efi partition sda1 with mount point /boot/efi

You can set it up ahead of time if you want - boot the live dvd and open a terminal (assuming your Mate partition is sda3), type:

Code: 
sudo mkdir /mnt/efi
sudo mount /dev/sda1 /mnt/efi
sudo mkdir /mnt/root
sudo mount /dev/sda3 /mnt/root
sudo grub-install --force --removable --no-floppy \ --boot-directory=/mnt/root/boot --efi-directory=/mnt/efi /dev/sda
Click to expand...

Would it be better to install Mate first or macOS? Ill give this ago when i get some spare time quite busy atm.
 
VioletDragon said:
Would it be better to install Mate first or macOS? Ill give this ago when i get some spare time quite busy atm.
Click to expand...
I doubt it would make too much difference as long as you install on GUID and install the UEFI version of Grub.
What method are you using to install Mate? Downloading the Mate installer from https://ubuntu-mate.org/download/. or downloading a minimum Ubuntu mini-ISO and then installing the Mate Desktop and supporting files?
Mate Installer would be easier IMHO.
 
Going Bald said:
I doubt it would make too much difference as long as you install on GUID and install the UEFI version of Grub.
What method are you using to install Mate? Downloading the Mate installer from https://ubuntu-mate.org/download/. or downloading a minimum Ubuntu mini-ISO and then installing the Mate Desktop and supporting files?
Mate Installer would be easier IMHO.
Click to expand...

Installing from Pen Drive. Ive testing on a old 4540s i have here. I boot from EFI and select grub.efi files doesn't work with Bootx64.efi.

I download Mate from here. https://www.linuxmint.com/download.php
 
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