I do not own a Chuwi anymore to help you out with this, but trying this will not damage your stuff… if it doesn’t work and you want to change back, just undo the renaming and folder movings.
Hey man… in order to make the dualboot work, things change a bit from what I’ve put on thread post. I have never had the intention of dualbooting so those instruction abore are not meant to this, but… you may try doing this:
- Rename the folder ‘/efi/EFI/Microsoft’ -> ‘/efi/EFI/Microsoft2’
- Update GRUB in order to ‘detect’ the new path for M$Win efi files.
$ sudo update-grub - Now, rename Ubuntu folder as -> ‘Microsoft’.
- Inside the new ‘Microsoft’ (Ubuntu) folder, create a new folder called ‘Boot’ and put everything to this new folder.
- Rename shimx64.efi to bootmgfw.efi.
Concept here:
Just after the BIOS POST, a built-in “program” is called where it present us the dual boot order. Android, or Windows. This program has routines for searching and picking ‘default’ filepaths.
For instance, for this program boot Windows, it needs to find an EFI partition, and this partition must have the following file in the following path: ‘/efi/EFI/Microsoft/Boot/bootmgfw.efi’. If it’s not like that, or mispelled, missing a character, it won’t work.