Juniper PTX10008 Hardware Manual page 363

NOTE: The device automatically create a recovery Junos OS image.
The "Select a recovery image" menu appears on the console when one of these routers is booted
and unable to load a version of Junos OS. You can follow the instructions in the "Select a recovery
image" menu to load the Junos OS image for one of these routers.
8. Log out of the shell:
root@device% exit
% exit
user@device>
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