Panic root mount failed startup aborted while installing pfSense 2-RC1
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 SuperMicro 1U, Motherboard etc. 
 160 GB HD
 4 GB RAM
 pfSense-2.0-RC1-amd64-20110226-1807.isoI boot from the CD I burned the ISO to 
 I select default at the pfSense menu
 Setup fails and I see errors such as:
 panic: Root mount failed, startup aborted
 cpuid = 0
 KDB: enter: panic
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 Looks like it either doesn't like the disk, or the storage controller/driver, or possibly the BIOS. Hard to say, but almost definitely a hardware or driver issue. 
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 This is happening the same for me also. 
 I'm using a USB CD Rom drive and I manage to boot 1.2.3 fine.
 See the attached image for more info…
  RC2 and RC3 have the same effect. Will now try with freeBSD 8 by itself… 
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 So this is while booting just from the CD? Have you tried pressing option 3 from the boot menu, for booting from USB devices? 
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 Same exact issue here. I was able to install RC1 by selecting option 3 at the boot-loader. Now (using exact same hardware and USB CD ROM drive) option 1 (default) and option 3 have the exact same result? 
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 OK, admit to having my head in a rather dark place here,,! Turns out I had been pressing F3, not just 3 I guess I am too used to the RHEL/CentOS console. I wonder if others are making the same error? 
