Installing for i386-efi platform.
Could not prepare Boot variable: Input/output error
grub-install: error: efibootmgr failed to register the boot entry: Input/output error.
32bit/i386 EFI is in general not supported here, if you can, boot into BIOS/CSM mode and probably, you are better off using another distro, such like Puppy OS, since 2 GB RAM is not enough. 4GB at least, when you need to use a web browser.
There is a manjaro spinoff named Mabox. It is basically manjaro with stripped off desktop environment and openbox instead. Which results in about 500MB RAM usage. The big question is which kernel supports the Atom, but you can try with live iso.