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Search: VirtualBox Boot USB with wmdk virtual disk. do not forget to run VirtualBox in elevated (if host is Windows).

So inside VirtualBOX you only need a small Virtual Hard Disk (just for Grub2, no need of a working Linux) that will boot the Grub2 bootloader.īeware, if you want to boot Windows from that external drive, better use de trick of creating a Virtual Hard disk that point to real external hard disk (the file is a vmdk). Seach for grub2-install and parameters -boot-directory and -efi-directory (in case you want EFI booting). You can, there are various ways, one implies using a VirtualCD iso image that will let you jump to USB booting another one implies creating a special virtual hard disk VMDK that point to you real external HDD (technically it is not booting from USB, it is booting from a VirtualHDD whose sectors are on the USB one).īut if you are up to configure Grub2, why on the hell you need a full mini distro? Just use a small 8MiB (also a 2Mib can be enought) with Grub2 and put on grub.cfg a menu to load OS from USB drive, all drives (fixed, internal, external, usb are seen by Grub2 in the same way).