Re: I lost Windows boot option on installation of Fedora 22

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On May 28, 2015 5:03 PM, "Bill Oliver" <vendor@xxxxxxxxxxxxx> wrote:
>
> On Thu, 28 May 2015, Fred Smith wrote:
>
>> On Thu, May 28, 2015 at 10:16:27PM +0000, Bill Oliver wrote:
>>>
>>>
>>> Help!
>>>
>>> I had a dual boot box using Kubuntu and Windows 8.  In GRUB, the Windows
>>> option was listed as "Windows Boot Loader".  When Fedora 22 came out
>>> yesterday, I jumped to it.  I installed it without a problem, but the
>>> Windows option is no longer listed.
>>>
>>> The Windows partitions are still there(the fdisk output is
>>> below.
>>>
>>> Any help on how to add it to the boot options?
>>
>>
>> I dunno if this will help you with F22, but here it is, FWIW.
>>
>> I have a dual-core netbook that came with Win7, and I shrank the
>> partition and installed F19 in the resulting free space, back when F19
>> was not EOL. The F19 installation found the bootable windoze partition(s)
>> without trouble and set up Grub accordingly.
>>
>> But when I replaced the F19 system with Centos-7, it did not.
>>
>> After some digging and list replies to my queries, one kind person told
>> me to try this:
>>
>>         1) Install ntfs "support"
>>         yum install -y epel-release
>>         yum install -y ntfs-3g ntfsprogs
>>
>>         2) re-run the grub config gen script
>>         grub2-mkconfig -o /boot/grub2/grub.cfg
>>
>> now, for Fedora, you probably don't need to install the EPEL repo,
>> I think ntfs-3g is probably available in the Fedora repos.
>>
>> If, by any chance, ntfs-3g and ntfsprogs are NOT installed already,
>> that would explain why the windows partition was not found.
>>
>> to make this long story short(er), once I did those steps, Grub now
>> supports booting windows as well as Centos.
>>
>>
>>
>
> Thanks, but no joy:
>
> %grub2-mkconfig -o /boot/grub2/grub.cfg
> Generating grub configuration file ...
> Found linux image: /boot/vmlinuz-4.0.4-301.fc22.x86_64
> Found initrd image: /boot/initramfs-4.0.4-301.fc22.x86_64.img
> Found linux image:
> /boot/vmlinuz-0-rescue-78fbe953ac7541f89d8b08858c868950
> Found initrd image:
> /boot/initramfs-0-rescue-78fbe953ac7541f89d8b08858c868950.img
> done
>
> billo
>
> --
>

Look in /boot/efi/EFI.  There should be Microsoft files there.  If not, they are... in c:\Windows\something...  I'll check notes if need be but mostly replying to point out:

on a UEFI system, the grub config is at /boot/efi/EFI/fedora/grub.cfg - not the path you used.

-- Pete

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