I'm trying to fully understand how to Dual Boot Windows 10 with UEFI before I jump into my next project. Windows 10 has been installed in UEFI and GPT and Fast Boot Disabled from within Windows 10. I was hoping some of you would share the best Tutorials you know of. I'm also struggling with where to install "Boot Loader Device" I see Tutorials but some doing it a little different.
I don't need to know the basics of creating partitions and such, just the UEFI part of it all as this is my first with UEFI.
It seems as though most tutorials are installing "Boot Loader Device" to /dev/sda, shutting down and booting a Linux Live Session, and then using "sudo efibootmgr" command to see what the order and boot numbers are. Then changing the boot order with "sudo efibootmgr --bootorder xxxx,xxxx" then Restarting and hoping for the best.
So what is happening here, where is grub being installed?
1. INSTALLING MINT KDE 17.3
2. I ALREADY DISABLED FAST BOOT, BUT FROM WITHIN, AND NOT FROM BIOS.
3. DO I NEED TO INSTALL BOOTLOADER TO EFI PARTITION OR /dev/sda?
a. IT SEEMS AS THOUGH THIS IS AUTOMATIC WHEN IN EFI MODE AS SEEN IN THE OFFICIAL UBUNTU UEFI DOCUMENTATION?
4. DO I NEED TO BOOT FROM “ADVANCED OPTIONS” OR JUST USE ONE OF THE FUNCTION KEYS?
5. HOW TO BE SURE I’M INSTALLING IN UEFI?
a. I ALWAYS BOOT FROM DVD TO BE SAFE, BUT I ASSUME THAT BECAUSE WINDOWS 10 IS ALREADY INSTALLED IN EFI MODE IT WILL BE FINE. OR CREATE A USB AS GPT, WHICH I WON'T BECAUSE IT IS EASIER TO JUST USE A DVD.
6. SOME SITES ALSO SUGGEST TO DISABLE SECURE BOOT, BUT AS I UNDERSTAND IT THIS IS NOT NEEDED. I'VE BOOTED PLENTY TIMES FROM A UEFI MACHINE WITH SECURE BOOT ENABLED, WITH A DVD, OR USB CREATED AS GPT.
a. IF IT IS REQUIRED DO I RE-ENABLE IT WHEN DONE?
This Official Ubuntu UEFI Guide
has actually answered a few of my questions but I will leave them anyhow in case someone has something good to add.
This is a good one I think NickAu has linked us to a few times:
This one says to Disable Secure Boot:
This one claims that the Boot fix can be done from within Windows:
Thanks, pcpunk...good night