I am trying to install Ubuntu in an Acer Aspire Switch10e windows tablet. It has an Intel Atom Z3735F CPU.

It is a 64bit processor but it only supports UEFI 32 bits, that makes it so none of the isos I have tried work directly to boot. The workaround for this was using the isorespin script on a Xubuntu-18.04-64bit image using the command:

isorespin.sh -i xubuntu.iso -u --atom

This gets me to the live version and allows me to install. But it doesnt seem to install a 32bit grub since the tablet wont detect a bootable media afterwards.

I have managed to launch the installation by using the following lines in the liveUSB grub console:

linux /casper/vmlinuz root=/dev/mmcblk1p2
initrd /casper/initrd.lz

And here is where I am at. I don't know how to install a 32bit bootloader from here that lets me launch without having to use the liveUSB. The guide I was following mentioned the use of the package grub-efi-ia32. But running this

sudo apt-get install grub-efi-ia32
sudo grub-install /dev/mmcblk1

and rebooting doesn't seem to work.

EDIT: I managed to get it to boot without the live usb, but not automatically.

The instalation left me with a EFI partition, wich contained the folders EFI/ubuntu and EFI/BOOT

I deleted the files bootia32.efi and BOOTx64.EFI from EFI/BOOT and replaced with the identically named files from the live usb. I also copied the file grubx64.efi from usb/EFI/BOOT.

I also copied the whole boot/ directory into the tablet's efi partition and the files vmlinuz and initrd.lz from the usb.

After doing this, the same menu as if I had the liveUSB connected appeared and I could manually type the commands above to launch.

I edited the grub.cfg file so it only had one menu entry that executed the orders above and now it launches.

But I have no real clue why and if someone wants to explain me what the heck did I just do I would apreciate it.

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