How to boot to usb from Grub2, when the BIOS keep booting solely to Grub despite what boot order

I'm having a constant battle with Bios boot options and grub... for example, I have windows 7 on a USB that i wish to install on my laptop (which has 2 HDDs, both have a Linux distro on them (ubuntu and arch), i select it on the USB on the HP Bios, which it still boots to Grub anyways... how does it do it is there any way on booting from grub to usb to install over the Arch Linux?

I made the USB using Rufus.

Thanks,


Solution 1:

There are different keys for entering into the boot menu for various models you can fid them here.