Unable to boot b2100 blade from USB thumb drive

Since all other LEDs are off at this point, I would suggest that you verify that the blade is actually powering up. Ensure it's seated correctly and try another slot if needed. If the blade will not light up, then I would contact support as it is likely you have a dead blade and need an RMA.

Chris, when I access the chassis information from the AOM menu, I get the following which helps me to believe that the power is on for the blade. I could also turn on/off power to the blade using the AOM menu.

Slot 1 blade information:
    AOM firmware version     : 02.10
    AOM bootloader version   : 01.02
    Serial number            : bldxxxxxxs
    MAC address              : 00xxxxxxxxxx0
    Power status             : on
    Primary LED              : off
    Secondary LED            : off
    Status LED               : yellow solid
    Alarm LED                : off

That should indicate that the blade is powered on, but not yet booted. It is possible that the system doesn't like the thumb drive. I have not seen this, but I have heard of it. Trying a different brand or size of thumb drive may resolve this. I'm sure you've already seen these, but check out:

https://support.f5.com/csp/article/K13117usbinstall https://support.f5.com/csp/article/K13164

If none of the above help, and you have confirmed that your terminal settings are correct (likely since you can see AOM), I would open a support case.

Thanks Chris, I will try a different USB and if that does not work, I will proceed with the latter option suggested above.