06-09-2022, 11:11 AM
Sounds like the 32bit UEFI loader file isn't being copied from the USB drive to the installation drive. You can boot the USB drive you already have into the live session and then mount the MMC drive to inspect and modify it. My last set of hassles were with Lite 5.0 RC1 so I'm not fluent enough to give detailed advice, and unfortunately I'm not going to get the chance to try and install 6.0 on my 100S for a few weeks to no doubt experience what you've encountered.
As an interim measure, both to confirm you can succeed and also help you confirm what the UEFI System Partition contents should be, you might want to consider trying to install a 5.x image. I successfully installed 5.0 on my Ideapad 100S-11IBY so I'm confident that works (though I had to use Rufus rather than Etcher) and I was able to upgrade through the 5.x series without any trouble, but I don't have any experience installing 5.[2|4|6|8] images on this hardware.
Another article which might be useful is here, which attacks the problem by modifying the USB installation driver rather than the ISO. This article is a bit dated now and your reported boot failure symptoms don't match those described in the article (or my grub issue with 5.0RC1 for that matter) but it describes some of the techniques for getting the installed system to boot.
As an interim measure, both to confirm you can succeed and also help you confirm what the UEFI System Partition contents should be, you might want to consider trying to install a 5.x image. I successfully installed 5.0 on my Ideapad 100S-11IBY so I'm confident that works (though I had to use Rufus rather than Etcher) and I was able to upgrade through the 5.x series without any trouble, but I don't have any experience installing 5.[2|4|6|8] images on this hardware.
Another article which might be useful is here, which attacks the problem by modifying the USB installation driver rather than the ISO. This article is a bit dated now and your reported boot failure symptoms don't match those described in the article (or my grub issue with 5.0RC1 for that matter) but it describes some of the techniques for getting the installed system to boot.