Plug the USB flash drive into your PC and use the Recovery Media Creator tool create Windows 10 recovery drive.This process will delete all data on the USB drive, so back up any important files before proceeding. In addition to the ISO file, you also need a USB flash drive at least 8 GB in size. From that same File Explorer window, you can also create bootable Windows 10 installation media on a USB flash drive. Ready for Windows 10 April 2018 Update? How to take controlĪfter the download is complete, you can double-click the ISO file to mount it as a virtual DVD drive and run Setup directly from the mounted drive.Just find the memtest86 kernel inside those ISO's and kexec into it. None of this is necessary for what you want however which, last I checked, was running memtest86. Booting from it generally means either installing on it like it's a hard drive, or using some special arrangement a particular distro might have for booting from USB disk. So it depends on the distro.Ī USB drive is a hard drive as far as the system's concerned. But the ISO file probably expects to be run off of a CDROM, and will complain mightily about not being able to find its contents - unless the distro has special arrangements to allow you to tell it where to find itself. You could install your own bootloader, and build a custom initrd containing minimal software allowing it to mount an ISO image off of the USB drive, and chroot into that.You need different bootloaders to boot from a USB drive rather than a CDROM drive anyway.This means dumping an ISO image onto a USB drive won't work.You can't fool the BIOS into believing it is.

A USB flash drive isn't a CDROM, period, no ifs, ands, or buts.

Sometimes you'll find special tools like the program which makes Win7 ISO's into bootable flash drives, but that only works for specific versions of specific programs it needs to be able to understand them, and reconfigure them for the different boot device.

They're too different to be directly compatible with each other. There's no magic 'make bootable CD into bootable USB drive' program.

Make bootable usb from iso