I'm trying to switch my Windows installation over to a new PC, but I've run into a problem. My SSD (S:) doesn't have a bootloader—it seems to be using the one from my older HDD with an old version of Windows on it. I really want to avoid reinstalling Windows; I just want to set up the bootloader on my SSD so I can boot from it on my new setup. I've searched online, but most guides are complicated and suggest doing a full reinstall or involve command line instructions that confuse me since I'm not very experienced with partitions or boot drives. Is there a simple way to do this? Any help or straightforward explanations would be greatly appreciated!
1 Answer
Switching the bootloader can be tricky! Before you start, make sure to back up anything important from your current Windows installation. You’ll need to boot using a different OS, like Windows PE, to resize your partitions properly. Specifically, you must shrink your C: drive a bit to make space for both the EFI (Extensible Firmware Interface) and MSR (Microsoft Reserved) partitions at the start of your drive. Microsoft has guidance on how to partition drives correctly, and you can find a detailed script online if you search for it. Once your partitions are set up, you’ll use the 'diskpart' tool to format the EFI partition and then run the command: 'bcdboot C:windows /s S: /f UEFI'. It's pretty technical, but that’s the general idea!
Thanks for your answer! I need a bit more detail on how to do those steps—especially how to actually resize and set up those partitions, since I'm not too experienced with all this.