the message “Reboot and select proper boot device or insert boot media in selected” is still displayed) but everything works fine when you open the boot menu and select the Windows bootloader yourself, this is the solution which worked for me: If you still have the problem that Windows is not booting automatically (i.e.Configure the boot priority the UEFI menu so that the boot partition is the topmost.Additionally, I had two partitions with the boot flag which also caused trouble. Now we will set the boot configuration data by typing:īcdedit /store BCD /create systemroot \Windows.Xcopy /s C:\Windows\Boot\EFI\*.* B:\EFI\Microsoft\Boot Select vol 3 #Use the number corresponding to your windows installation List partition #Make sure that the 100mb partition is selected
Type into the terminal (but leave the #… parts out – they are only comments by me): Now we will create the two missing partitions: the EFI boot sector and the Windows Boot sector.When Windows starts from the DVD, select the desired language and then press Shift+F10 to open the terminal.Select the former and then don’t forget to press any key if you are asked to – otherwise, the non-UEFI part would be booted. One with “UEFI:” in front and one without. Make sure you boot the UEFI part of the disk: When you open your boot menu by pressing F8, you will see two entries for your Windows 7 disk. In the end, you should have at least 229 MB of free space on your hard drive – preferably at the beginning. Delete what is remaining of the Windows boot partition (not the Windows partition but the partition of around 128 MB size) and the EFI partition – you can use GParted for this.This is how I fixed it (please be careful when dealing with partitioning and boot sectors, backup your data beforehand): This resulted in an error “Reboot and select proper boot device or insert boot media in selected”. I recently destroyed my Windows 7 UEFI boot sector by overwriting the corresponding EFI partition.
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