How to setup multiple OS boot coexisting with win 8, 8.1, 10... x64 with EFI-GUID scenary
(0) Backup your installed windows partitions: http://www.purebasic.fr/english/viewtop ... 80#p478832
(1) Boot windows. Go to "Control Panel -> Energy Options -> Setup the behaviour of the on/off button".
Disable "Activate quick boot (recommended)" checkbox and save. Do it in supervisor (admin) mode.
(This must be done because in quick boot mode the windows saves the status of all the hd partitions when is shutted down, and this brings problems if other OS is living together windows).
(2) Install a EFI x64 OS (normally plain ubuntu, linux mint, arch linux, etc.), but don't touch the MS-EFI partition neither the windows partition.
(3) Reboot it. In case the boot menu does not appear and there's booted windows, then, in supervisor (administrator) mode in windows run this: "BCDedit /set {bootmgr} path \EFI\ubuntu\grubx64.efi" (or the path name where the new OS has the grubx64.efi file). Then reboot.
("BCDedit" is an interesting windows command to edit the store boot file for EFI, just like the 'boot.ini' file in older windows. To list the contents of this storing just run "bcdedit" or "bcdedit /v").
END.
PD: There is also an interesting utility for boot problems: 'boot-repair-disk-64bit.iso' (for EFI) and 'boot-repair-disk-32bit.iso' (for standard legacy BIOS).
Regards!
How to setup multiple OS boot coexisting with win 8.1
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Psychophanta
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Re: How to setup multiple OS boot coexisting with win 8.1
Similar to the way I do it. 
Here is a link to a bootable live CD/USB creator which will work for both standard BIOS & UEFI stuff.
https://unetbootin.github.io/
Use that to make ur usb bootable with a live version of your choice of Linux.
I 1st resize my windows partition using windows own tools to split the drive with a decent amount of room for windows, then leave the rest as unallocated space.
I then run the bootable USB and install from there using the unallocated space from the windows resize. (Make sure to allow a decent swap partition)
Other than that, about the same as you.
(I do also carry a little usb on my keys with Ubuntu Live on it using this unetbootin installed bootloader which comes in very handy for on the fly computer repairs, etc....)
Anyway, Happy New year to all!!
Here is a link to a bootable live CD/USB creator which will work for both standard BIOS & UEFI stuff.
https://unetbootin.github.io/
Use that to make ur usb bootable with a live version of your choice of Linux.
I 1st resize my windows partition using windows own tools to split the drive with a decent amount of room for windows, then leave the rest as unallocated space.
I then run the bootable USB and install from there using the unallocated space from the windows resize. (Make sure to allow a decent swap partition)
Other than that, about the same as you.
(I do also carry a little usb on my keys with Ubuntu Live on it using this unetbootin installed bootloader which comes in very handy for on the fly computer repairs, etc....)
Anyway, Happy New year to all!!
-
Psychophanta
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- Posts: 5153
- Joined: Wed Jun 11, 2003 9:33 pm
- Location: Anare
- Contact:
Re: How to setup multiple OS boot coexisting with win 8.1
Thanks , and good year for all. 
Yes, I know unetbootin, but i use this one to make any linux bootable from USB (also from both BIOS and UEFI) and install from it:
http://sourceforge.net/projects/win32diskimager/
or for the 'boot-repair-disk-64bit.iso' i use this one because it does not boot with Win32DiskManager:
http://rufus.akeo.ie/
Yes, I know unetbootin, but i use this one to make any linux bootable from USB (also from both BIOS and UEFI) and install from it:
http://sourceforge.net/projects/win32diskimager/
or for the 'boot-repair-disk-64bit.iso' i use this one because it does not boot with Win32DiskManager:
http://rufus.akeo.ie/