I just got a new Windows 10 computer (dell Inspiron) and am looking to start dual-booting, but I want to be sure I don't destroy the bootable sector of my PC. The Inspiron BIOS has a UEFI boot selector which currently displays "Windows Boot Manager" and $nameofmybootableusb. They both boot fine, but when I install Linux (Mint) I want to be able to select either GRUB or Windows Boot Manager from this window, where WBM boots to Windows and Grub boots to Mint. I realize that this is likely a complicated request, so thank you in advance for any help you can offer! Picture of the BIOS screen, if that's helpful

  • Read info grub2. There is a section on installing on your system. You can specify a device, which will be your target partition. – ajeh May 15 '18 at 17:14

Make an external boot media (USB or Optical) and put a GRUB loader on that. Configure to allow booting the fixed disk partition of interest. Assuming your boot drive order works to allow that, use that media as a key to boot your alternate system.

I modified a Ubuntu boot image to allow that sort of thing

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