Re: boot menu does not see Windows after Fedora 27 Install

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I'm

On Thu, Apr 26, 2018, 11:26 AM Samuel Sieb <samuel@xxxxxxxx> wrote:
On 04/26/2018 08:22 AM, PropAAS DBA wrote:
> I believe it is an EFI system see the blkid output below:

It looks like a mixed system.

> root@localhost ~]# blkid
> /dev/sda1: UUID="f9c9741c-c5c8-4a41-9f5a-0f4f7dba9169" TYPE="ext4"
> PARTUUID="2466866a-01"
> /dev/sda2: UUID="8cfbcbef-9760-40af-b1ae-3223593ce625" TYPE="swap"
> PARTUUID="2466866a-02"
> /dev/sdb1: UUID="3666D7D766D79649" TYPE="ntfs" PARTUUID="34600b74-01"
> /dev/sdb2: UUID="D600697A0069630B" TYPE="ntfs" PARTUUID="34600b74-02"
> /dev/sdc1: LABEL="Games" UUID="00021CF2021CEF02" TYPE="ntfs"
> PARTUUID="00008f4e-01"

Your windows partitions are all on msdos partitioned drives with no EFI
partition.  This means that Windows is not set up for EFI boot.

> /dev/sdd1: SEC_TYPE="msdos" UUID="96F2-9316" TYPE="vfat" PARTLABEL="EFI
> System Partition" PARTUUID="e3178d52-6030-4ee6-9bfa-e57852bc0ac0"
> /dev/sdd2: UUID="3a26080f-c080-4065-b1aa-2446ad953ff7" TYPE="ext4"
> PARTUUID="66462a70-6f12-4a86-8d35-053cf44c5b95"
> /dev/sdd3: UUID="DF6NVW-cRSv-Bol5-zF3C-2ber-md8q-2PfOCL"
> TYPE="LVM2_member" PARTUUID="692cdbd9-9fde-45ae-94e8-75734c8760ed"

However, you installed Fedora in EFI mode on a GPT formatted drive.
This means that the installer would not see the Windows installation.
Unless you reinstall either Fedora or Windows in the other mode, you
will have to use the BIOS boot menu to choose them at boot.



Yep. And depending on the firmware, good chance it means toggling "Legacy enable/disable " (or sometimes UEFI enabled/disabled) everytime he wants to switch OS's.

Some firmware have an NVRAM option for this. 'efibootmgr -v' will reveal it if supported, and the way to use it is with '--bootnext <num>' flag. It's a one time boot.


---
Chris Murphy
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