Thanks for flagging the thread.
Today I downloaded R10 anew, checked Md5 and put the iso on a live-usb-stick via multi-system.
The first installation on my laptop failed again.
This time I did not check the "download of third party software" and I didn't check the download of release something during installation.
I selected sda1 as target for the grub.
Installation of GRUB failed
The package grub-efi-amd64-signed could not be installed in target. Without the GRUB-bootloader the installed system will not boot
(not exactly this text, I translated it from german)
Next try:
I did not select "Other" in the installer but "install beside existing OS", so the installer has to find the efi-boot-partition by itself and install the grub2 there.
It failed again.
The error-message says:
Installation of GRUB failed
The package grub-efi-amd64-signed could not be installed in target. Without the GRUB-bootloader the installed system will not boot
After shutdown and removing of the live-usb-stick, the booting of the laptop brought the old grub-menu. I selected the Lubuntu 10.0 and there I put "sudo update-grub" into the terminal.
After restarting the laptop the 2 wattOS appeared in the grub-menu screen.
I selected the first one and wattOS started to load but it gave many messages on the screen ... the whole procedure what it loads and then "OK" in green.
But after that show the login-screen of wattOS appeared , of course the cursor did not work, so I had to unplug the usb-mouse and plug again, then the curser worked and I could login to wattOS.
Since wattOS R10 now is installed and there seems no solution for the problem, I would be interested in knowing how to stop the boot-show with all the messages on the screen.
I guess I have to tweak some settings somewhere in the root-files ?