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    Solved Install Windows as a Dual Boot after Fedora

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    dual boot fedora windows windows 10 fedora 33
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    • JaredBuschJ
      JaredBusch
      last edited by

      I'm tempted to just nuke my entire setup and go from scratch, as my desktop has been running as is for a couple years now.

      But at this point I would like to understand the dual boot process a bit more also.

      1 Reply Last reply Reply Quote 0
      • DashrenderD
        Dashrender
        last edited by

        have you tried it yet? I wonder if Windows installer understands grub and updates it automatically, like most linux distros have done to the windows boot loader for ages....

        JaredBuschJ 1 Reply Last reply Reply Quote 0
        • JaredBuschJ
          JaredBusch @Dashrender
          last edited by

          @Dashrender said in Install Windows as a Dual Boot after Fedora:

          have you tried it yet? I wonder if Windows installer understands grub and updates it automatically, like most linux distros have done to the windows boot loader for ages....

          Windows puked, but I kicked it off and went to talk to my wife. Came back to a boot into recovery mode.

          So I'm validating my local backup while I get some more work completed then I will try again.

          JaredBuschJ 1 Reply Last reply Reply Quote 0
          • JaredBuschJ
            JaredBusch @JaredBusch
            last edited by

            @jaredbusch said in Install Windows as a Dual Boot after Fedora:

            @Dashrender said in Install Windows as a Dual Boot after Fedora:

            have you tried it yet? I wonder if Windows installer understands grub and updates it automatically, like most linux distros have done to the windows boot loader for ages....

            Windows puked, but I kicked it off and went to talk to my wife. Came back to a boot into recovery mode.

            So I'm validating my local backup while I get some more work completed then I will try again.

            I gave up trying to get Windows to play nice and let Windows win.

            I nuked all my disks, installed Windows first to the disk where I wanted Windows. Then I installed Fedora 33 to the primary disk.

            black3dynamiteB 1 Reply Last reply Reply Quote 2
            • black3dynamiteB
              black3dynamite @JaredBusch
              last edited by

              @jaredbusch said in Install Windows as a Dual Boot after Fedora:

              @jaredbusch said in Install Windows as a Dual Boot after Fedora:

              @Dashrender said in Install Windows as a Dual Boot after Fedora:

              have you tried it yet? I wonder if Windows installer understands grub and updates it automatically, like most linux distros have done to the windows boot loader for ages....

              Windows puked, but I kicked it off and went to talk to my wife. Came back to a boot into recovery mode.

              So I'm validating my local backup while I get some more work completed then I will try again.

              I gave up trying to get Windows to play nice and let Windows win.

              I nuked all my disks, installed Windows first to the disk where I wanted Windows. Then I installed Fedora 33 to the primary disk.

              I did this recently but I haven't confirmed if the steps is in the correct order since I was in a hurry. But here you go.

              References:

              • https://docs.fedoraproject.org/en-US/Fedora/22/html/Multiboot_Guide/GRUB-reinstalling.html
              • https://www.hyperborea.org/journal/2021/01/fix-uefi/
              • https://deriklima.com/how-to-add-windows-10-to-grub/

              Disk layout:

              • Disk 0 (/dev/sda): Windows 10 (Installed after Fedora)
              • Disk 1 (/dev/sdb): Fedora (Already installed)

              Story board:

              • Fedora is installed on /dev/sdb and Fedora is the UEFI boot manager
              • Installed Windows 10 on /dev/sda and Windows is the UEFI boot manager
              • Used Fedora Workstation 33 Live to fix the missing UEFI entry
              • Open "GNOME Disks" to confirm the EFI System, which should be partition 1 on /dev/sdb
              • Open "Terminal" and enter sudo -i
              • Enter efibootmgr -v and you would see Windows (\EFI\Microsoft\Boot\bootmgfw.efi) has the UEFI boot manager
              • Enter efibootmgr -c -w -L Fedora -d /dev/sdb -p 1 -l \EFI\fedora\shim.efi
              • Reboot
              • Fedora is now the UEFI boot manager but now you don't have access to Windows UEFI boot manager to boot into Windows. You can fix that by adding the Windows 10 boot information to Fedora Grub boot manager.
              • IN CASE GRUB MENU IS NOT DISPLAYING AFTER REBOOT bcdedit /set {bootmgr} path \EFI\fedora\shim.efi in Windows 10 (command line).
              • os-prober to confirm if Windows is installed. /dev/sdb1@/EFI/Microsoft/Boot/bootmgfw.efi:Windows Boot Manager:Windows:efi
              • grub2-mkconfig -o /boot/efi/EFI/fedora/grub.cfg should found Windows Boot Manager on /dev/sdb1@/EFI/Microsoft/Boot/bootmgfw.efi:Windows Boot Manager:Windows:efi and then add boot menu entry for UEFI Firmware Settings.
              • Reboot
              D 1 Reply Last reply Reply Quote 0
              • dave247D
                dave247 @JaredBusch
                last edited by

                @jaredbusch said in Install Windows as a Dual Boot after Fedora:

                So, the internet is full of the reverse. Installing Fedora or Ubuntu or any other Linux after Windows is installed.

                But I have Fedora installed first and I want to install Windows as a dual boot to a separate disk.

                Booting to the USB and installing windows to that disk is easy.

                What I'm not sure about is fixing grub afterwards.

                Google and the older Fedora docs tell me this.
                https://docs.fedoraproject.org/en-US/Fedora/23/html/Multiboot_Guide/GRUB-recreating.html

                Boot to a live image and run this:

                grub2-mkconfig -o /boot/efi/EFI/fedora/grub.cfg

                Who dual boots OS's these days? Just use VMware Workstation or VirtualBox...

                JaredBuschJ 1 Reply Last reply Reply Quote 0
                • JaredBuschJ
                  JaredBusch @dave247
                  last edited by

                  @dave247 said in Install Windows as a Dual Boot after Fedora:

                  Who dual boots OS's these days? Just use VMware Workstation or VirtualBox...

                  Obvious troll is obvious.

                  Gamers. Not everything runs under wine

                  dave247D 1 Reply Last reply Reply Quote 0
                  • dave247D
                    dave247 @JaredBusch
                    last edited by

                    @jaredbusch said in Install Windows as a Dual Boot after Fedora:

                    @dave247 said in Install Windows as a Dual Boot after Fedora:

                    Who dual boots OS's these days? Just use VMware Workstation or VirtualBox...

                    Obvious troll is obvious.

                    Gamers. Not everything runs under wine

                    I'm not trolling... I was genuinely wondering why you'd dual boot. I always used to hate that, shutting down one OS to bring up another. I'd rather have both available at the same time.

                    DustinB3403D JaredBuschJ 2 Replies Last reply Reply Quote 0
                    • DustinB3403D
                      DustinB3403 @dave247
                      last edited by

                      @dave247 said in Install Windows as a Dual Boot after Fedora:

                      @jaredbusch said in Install Windows as a Dual Boot after Fedora:

                      @dave247 said in Install Windows as a Dual Boot after Fedora:

                      Who dual boots OS's these days? Just use VMware Workstation or VirtualBox...

                      Obvious troll is obvious.

                      Gamers. Not everything runs under wine

                      I'm not trolling... I was genuinely wondering why you'd dual boot. I always used to hate that, shutting down one OS to bring up another. I'd rather have both available at the same time.

                      Sure, except you're having massive performance hits from running them at the same time.

                      Dual booting provides the full performance to whichever OS is running at that time.

                      dave247D 1 Reply Last reply Reply Quote 0
                      • dave247D
                        dave247 @DustinB3403
                        last edited by

                        @dustinb3403 said in Install Windows as a Dual Boot after Fedora:

                        @dave247 said in Install Windows as a Dual Boot after Fedora:

                        @jaredbusch said in Install Windows as a Dual Boot after Fedora:

                        @dave247 said in Install Windows as a Dual Boot after Fedora:

                        Who dual boots OS's these days? Just use VMware Workstation or VirtualBox...

                        Obvious troll is obvious.

                        Gamers. Not everything runs under wine

                        I'm not trolling... I was genuinely wondering why you'd dual boot. I always used to hate that, shutting down one OS to bring up another. I'd rather have both available at the same time.

                        Sure, except you're having massive performance hits from running them at the same time.

                        Dual booting provides the full performance to whichever OS is running at that time.

                        Yeah I didn't know it was for gaming purposes when commenting.

                        1 Reply Last reply Reply Quote 0
                        • JaredBuschJ
                          JaredBusch @dave247
                          last edited by

                          @dave247 said in Install Windows as a Dual Boot after Fedora:

                          I'm not trolling...

                          Then I completely apologize for taking you out of context.

                          1 Reply Last reply Reply Quote 0
                          • D
                            drbtx @black3dynamite
                            last edited by

                            @black3dynamite works.

                            Thanks. I was looking for this article long time. Cheers.

                            1 Reply Last reply Reply Quote 0
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