On Tue, Dec 16, 2014 at 10:54 AM, Jouk Jansen <joukj@xxxxxxxxxxxxxxxxxxxx> wrote: > Hi all, > > I have a Toshiba (Satelite C50-B-14C). Window 8 was preinstalled. I turned > it into a dual boot by shrinking the Windows partition and installing F20. > All was fine until I installed some Windows-updates the other day. The > machine then only booted windows. I made Fedora boot again by > grub2-install/grub2-mkconfig. However now when you select windows in the > grub menu it will not start because it lost its boot-block. > I'm not eager to try windows writing its bootsector again, because I'm > afraid I will loose grub2 again. > Does anyone know this problem? and how to solve it. Can you boot Fedora and run $ efibootmgr and post the results? I can't tell if this computer has BIOS or UEFI firmware. I thought all Windows 8 pre-installed hardware are UEFI. Also, what do you mean by "will not start because it lost its boot block" - what's the actual error message? If you can take a cell phone photo and post that somewhere it might be useful to determine if this is a Windows bootloader error or GRUB error. On BIOS computers, grub-install only replaces the first 440 bytes of bootloader code on the 1st sector, none of the other Windows bootloader stages are touched. OnUEFI computers, the bootloaders co-exist on the EFI System partition in different directories. There's no longer such a thing as boot blocks or boot sectors. And grub2-install should be avoided. -- Chris Murphy -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
