This article explains what the steps should be to perform if a PTX1000 is not booting up because it has failed to recognize the kernel.

Customer device showed the following output after a reboot-

ok no valid kernel found
no not found
OK install file:///junos-vmhost-install-ptx-x86-64-18.2x75-D435.17.tgz
cannot opend package (error22)
OK

ok no valid kernel found
no not found
OK install file:///junos-vmhost-install-ptx-x86-64-18.2x75-D435.17.tgz
cannot opend package (error22)
OK

Step-1: Power off the device, such as a router or a switch, by pressing the power button on the front panel.

Step-2: Connect and configure the management device, such as a PC or a laptop, as follows:

• Turn off the power to the management device.
• Plug one end of the Ethernet rollover cable supplied with the device into the RJ-45–to–DB-9 serial port adapter supplied with the device.
• Plug the RJ-45–to–DB-9 serial port adapter into the serial port on the management device.
• Connect the other end of the Ethernet rollover cable to the console port on the device.
• Turn on the power to the management device.
• On the management device, start your asynchronous terminal emulation application (such as Microsoft Windows Hyperterminal) and select the appropriate communication (COM) port to use (for example, COM1).

Step-3: Configure the port settings as follows:

• Bits per second: 9600
• Data bits: 8
• Parity: None
• Stop bits: 1
• Flow control: None

Step-4: Power on the device by pressing the power button on the front panel. Verify that the POWER LED on the front panel turns green.

Step-5: The terminal emulation screen on your management device displays the boot sequence of the device. Access the Junos Main Menu.

• In releases before Junos OS Release 17.3, the Junos Main Menu appears for 3 seconds on startup before automatically booting the /junos volume. Press any key within the 3-second window to stop the automatic boot sequence and display the Junos Main Menu.
• Starting in Junos OS Release 17.3, press Ctrl+c within the 3-second window to stop the automatic boot sequence and display the Junos Main Menu.

Step-6: Choose the Boot Junos volume

Main Menu
1.  Boot [J]unos volume
2.  Boot Junos volume in [S]afe mode
3.  [R]eboot
4.  [B]oot menu
5.  [M]ore options

 
Step-7: If the issue still persists, then RMA the PTX1000 device.