Need help to Triple boot Win 10 x32 x64 & EOS

[echelonone]

I attempted to create a triple boot situation that contained Windows 10 32bit, Windows 10 64bit, and EOS. I could boot into all 3 operating systems without any problems. The only problem I had is when rebooting out of EOS. No bootable operating system would be found. This would still occur after restarting the computer from a powered off state. The only way to get out of this locked state was to boot from a USB flash drive containing another Windows 10 OS, then shut down/restart the computer without the flash drive connected and all 3 bootable OS’s would be back for choice. Booting/rebooting in/out of the Windows 10 OS’s do not cause this problem. I cannot remember which order I installed the operating systems, but EOS was installed via/from within the windows 10 64bit OS and subsequently removed via the same. The questions are as follows:

1. Does anybody know why this occurs?
2. Can both windows 10 32bit and 64bit be successfully installed/run along with EOS?
3. Which would be the successful order for installing all 3?

[wjt]

Does your system have EFI, or legacy BIOS? (The debug log from the installer would tell you.) I guess BIOS since it sounds like you’re seeing the Windows bootloader with 3 options for Endless OS, Windows x32 and Windows x64.

I would suggest that the most likely way to make this work is:

• Install Windows 10 (for platform A) as the first OS on the disk
• Install Windows 10 (for platform B) as the second OS, using the bootloader from Win 10 platform A
• Boot Win 10 A, install Endless OS from here

but I’m afraid this has not been tested (to the best of my knowledge).