So I did the install as outlined above to use BIU for backup/partition work.
Indeed, it did install files to \EFI\BootIt\*, and modified \EFI\Microsoft\Boot\BCD.LOG, but modified no other files.
It did not however put a boot option in NVRAM, so you would be unable to boot it without more work. However, this could be due to the Acer laptop, as it is difficult to add boot options.
Information to add BootIt.efi as a boot option:
1) Acer laptop specific: You need to add bootit.efi as a trusted UEFI file even with secure boot turned off (https://ubuntuforums.org/showthread.php ... st13341757
a) launch firmware utility with F2
b) under security, set supervisor password
c) under boot, turn on secure boot
d) under security, choose select a UEFI file as trusted for executing and navigate to file via drive -> EFI -> BootIt -> BootIt.efi
e) unset secure boot and supervisor password if desired
f) save and reboot
2) General (won't work with some Acer models): You need to write a new entry to NVRAM as a boot option.
a) launch uefi shell, I have a USB drive as described in the purple box(https://wiki.archlinux.org/index.php/Un ... UEFI_Shell
b) map (note which file system has \EFI, often FS1: if booting from USB)
c) bcfg boot add 3 FS1:\EFI\BootIt\BootIt.efi "BootIt", if you want BootIt to be 4th in the list of options
d) turn off the computer and reboot
Additionally, the bootit.ini file will be incorrect as you will want it to start at the desktop or partition work. You can edit the bootit.ini file from the UEFI shell, although you'll probably need to remove the archive attribute with attrib -a bootit.ini when in the \EFI\BootIt\ directory. You want a file with at least
to start at the desktop.