I finally could re-install it by setting EFI ON in my BIOS, and creating an 50Mo EFI partition with the ubuntu installer. So, Ubuntu seem not to work anymore with old PC having not UEFI (or disabling it) ?
I finally could re-install it by setting EFI ON in my BIOS, and creating an 50Mo EFI partition with the ubuntu installer. So, Ubuntu seem not to work anymore with old PC having not UEFI (or disabling it) ?