| >>>> Hi all, >>>> >>>> I am having an issue getting F21 to dual boot with Windows 7 on an EFI >>>> system. >>>> >>>> The first thing I did was to install Windows 7. This worked fine and had >>>> no issues. >>>> >>>> Then I installed F21 from a LiveUSB. After some hickups, which have now >>>> been resolved, F21 works fine. >>>> >>>> The problem I have now is that grub can not find my Windows 7 >>>> installation. I noticed that there were no boot files for Microsoft in >>>> /boot/efi/EFI. >>>> >>> >>>You're saying after installing Fedora 21 after Windows 7, that there was no >>>Microsoft directory in /boot/efi/EFI? Just a fedora directory? >> >> This is correct, there may have also been a /boot/efi/EFI/BOOT folder as >> well (not sure what this is or where it came from). > ESP//EFI/BOOT/ is put there by the Fedora installer as a backup in >case of NVRAM confusion. >ESP//EFI/microsoft should be there after installing Windows, if it's >not there, then it's not a UEFI installation of Windows, it's CSM-BIOS >instead. If it's there after installing Windows and not there after >installing Fedora, that's a new, major, blocking bug. So if you can >reproduce that and file a bug it would be great. I haven't ever seen >this behavior in dozens of installs. >> So it seems that the issue is trying to do all of this from the LiveUSB? > No idea. Several people have done this on UEFI systems and gotten >successful installs, including 2 recently in bug 986731. >I'm not sure what to recommend other than something that's a big of a >PITA, which would be to file a new bug. Document each step you're >going through to install Windows 7, and Fedora. And attach the >following files from the live environment: >/mnt/sysimage/boot/efi/EFI/fedora/grub.cfg >/tmp/program.log >/tmp/storage.log >The output from: ># chroot /mnt/sysimage ># bash -x grub2-mkconfig ># os-prober >The above is probably easiest done in a clean/reset Terminal window in >the live environment, select all, copy, paste into a gedit document >and save it, then include that as an attachment also. >Also, if you can include the before Fedora 21 installation, and >post-install output from the following command: ># parted /dev/sda u s p >That'd also be helpful, I'm assuming the drive in question is sda so >replace that if needed. This will show the partition layout after >Windows is freshly installed vs what anaconda does to it post Fedora. >And makes it easier than trying to dig this out of the storage.log. >And while you're at it make an explicit note that you checked the EFI >System partition before and after installing Fedora 21, and whether >/EFI/microsoft is present or not. Normally the ESP is partition 2 on >Windows, if I recall correctly from a recent Windows 8.1 UEFI install. >I would do this again myself but I've lost access to the test EFI >computer capable of EFI booting Windows 8. As much as I would love to see if the problems I am having are reproducible, I just got my system working and am kind of hesitant to rip it all apart again. Hopefully I just encountered a one-off set of circumstances and no one else will ever see these same issues again. Thank you for your help though. Bidski >And maybe > there is something happening with the installer deleting the Windows boot > files in the EFI partition? More likely is there's a 2nd EFI System partition being created under certain circumstances and one ESP has /EFI/microsoft and the other doesn't. Anaconda is not supposed to be creating two ESPs, but the UEFI spec doesn't prohibit it either. |
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