This FAT32 formatted partition stores the boot loaders for all the installed operating systems. On EFI systems there's a special partition called the EFI System Partition (aka the ESP). What's needed is a way to split up the two Windows entries so other boot loaders can see them as separate operating systems. Machine reboots and goes back to the rEFInd menu again.

Windows boot menu appears, with Windows 10 and Windows 11.Machine boots, rEFInd menu appears with Windows and Ubuntu options.

On my machine, getting into Windows 10 went like this: so you need to go through your first boot loader again. If you choose the non-default Windows installation the Windows boot manager reboots the machine before launching the selected operating system. If you're using a third-party boot manager like Grub or rEFInd it's less than ideal because it becomes a two-step process - first you need to choose Windows Boot Manager and then from the Windows boot manager choose which version of Windows.īut wait, it's even worse than that. This works fine if you're only running Windows. When you install multiple copies of Windows on machine, Windows updates it's boot manager configuration so that at boot time you can choose which version you want to run.