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I'm trying to boot Chromium from a USB drive and I'm anticipating the same problem I'm about to describe to happen when I try Ubuntu, which is currently downloading, I was just using Chromium to test my ability to boot from a USB drive because ultimately my goal is to run Ubuntu from my flash drive. Anyway, I wrote the OS to a disk using Win32DiskImager or something, after I unzipped it with 7-Zip, I restarted my computer, changed the boot order in BIOS to USB and Removable drives before the Hard Drive, put the Flash Drive in, restarted again, and when it tries to boot to the USB drive, it says "Operation system not found" (not a typo). PLEASE HELP ME! I've never done this before. I'm running Windows 7, BIOS A07, 8GB Flash Drive. Any other specs you need, let me know. Hoping to run Ubuntu soon, I got it to work in virtual machine, but not booting from a USB. Thanks for your help

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It's probably because you're just extracting the contents of the .iso, and not writing the raw image: see ubuntu.com/download/desktop/create-a-usb-stick-on-windows –  Richard Jan 30 '14 at 1:21

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