I have a Zotac Zbox AD02 box with an AMD Fusion E-450 that I would like to install Sophos UTM on, but the problem is that it doesn't have a CD-ROM drive so I have to do it via a flash drive. I'm running Arch Linux and I can't create a bootable flash drive no matter I do. I've tried to use dd to write the image to the disk, but that didn't work (when I tell the zbox to boot from the flash drive, it just skips it and goes to the HDD). I tried using unetbootin to create a bootable disk, using both FAT32 and ext3 as the base file system, using MBR instead of GPT. Using one of them all I got was POST beeps when trying to boot from it, using the FAT32/MBR combo I would get as far as both boot entries showing up in the boot menu (UEFI and BIOS), but selecting either of them just leaves me with a flashing underscore in the upper left-hand corner.
I've even wipe the entire drive with dd if=/dev/zero of=/dev/sde and recreated a new MBR partition table with fdisk and re-wrote the image with unetbootin. What am I doing wrong???
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