Yes I can select the working menu at the grub menu which, But the linux boot has changed by the way so that it contains, now, three options
- Ubuntu
- advanced options
- system setup
windows was removed from the list as it was showed before the change of the default line in my post#39
The problem now is that it takes me longer to get into the linux boot, because of the black screen that it showed once I click on linux i the boot-manager. I must shutdowen the system, boot first on windows, than I must to reboot to get access to the linux boot with its three the options indicated above.
If its possible to come back to the boot before changing the default line, it will be better and less longer.