Palo Alto:Factory Reset On A PA-2050

I have an older PA-2050 that I'm going to use for a customer of mine (as a router), and I'm having to do a factory reset on it.  Below, you can see the output of what I had to do.  I simply reboot it, and during the 5 second window, type in "maint".

   Welcome to the PanOS Bootloader.

U-Boot 4.1.8.0-21 (Build time: Aug 27 2012 - 19:23:20)
BIST check passed.
KESTREL board revision major:2, minor:0, serial #: 0003C104442
OCTEON CN3120-CP pass 1.1, Core clock: 500 MHz, DDR clock: 265 MHz (530 Mhz data rate)
DRAM:  1024 MB
Clearing DRAM........ done
Using default environment

Flash: 64 MB
Net:   octeth0, octeth1, octeth2
 Bus 0 (CF Card): not available


USB:   (port 0) No USB devices found.



        Autoboot to default partition in 5 seconds.
        Enter 'maint' to boot to maint partition.

Entry: maint

Booting to maint mode.
...