My problem arrived after this solution : GNU Grub / Windows Bootloader I used the fonction "EasyBCD->BCD Deployement->Write MBR" After that, my problem was fix, but after the reboot, the program EasyBCD 2.3 refuse to launch, i uninstall it, reinstall, remove the folder and try again, but the program won't work... So I install an old version ( 2.1.2 ) in order to add a new entry in MBR to launch Ubuntu... I select "Add New ENtry->Linux/BSD->Grub2"
I rebooted my machine and i selected the option grub 2... But after that my machine show "
GRUB4DOS 0.4.5b 2011-11-27 [Minimal BASH-like line editing is supported. For the first word, TAB lists possible command completions. Anywhere else TAB lists the possible completions of a device/filename.] grub>
So i tried to do some command in this panel, but it say that i must load the kernel first, but the command linux
/vmlinuz root=/dev/sda6 give to me an error...
Thanks for all ^^