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vSphere 5.5 upgrade fails

michaelkim1 asked
Last Modified: 2015-08-12
I upgraded an ESXi host from 5.1 to 5.5u2 using the command line and downloading the image from vmware's deployment site.  It completes the update fine, but when I reboot, it gets to the point where the screen reads:  vfat loaded and then hangs until I hard reset. It reverts to the previous image and boots back to 5.1.

I have checked the logs in /var/log and there is nothing that I can find to explain this.

Any suggestions on where else to look for some clues as to why it failed to boot so I can troubleshoot?
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