One USB drive boots, the other doesn't...

Chris Whitehouse cwhiteh at
Fri Mar 6 15:05:16 PST 2009

Peter Steele wrote:
> I have a process with creates bootable USB disks with FreeBSD 7.0.
> The creation of the USB disks is prettystraightforward. We have a
> master OS image saved as a tarball, and when we want to create a new
> USB disk, we simply create a single bootable UFS partition on the
> target USB drive and then extract and copy the tarball image onto the
> USB disk.
> We just got a bunch of new 4GB USB disks from a different
> manufacturer than we had been using and when we try to boot a system
> with this disk the BIOS reports a "missing operating system" error.
> Well, the OS is definitely not missing, so I assume that the BIOS
> can't read the boot info from the USB drive for some reason. Is there
> a way around this? Surely there must be away to get a bootable OS
> onto a USB drive, regardless of it's brand.
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Shot in the dark but are they by any chance U3 devices?


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