Restoring Junos OS
IN THIS SECTION
Creating an Emergency Boot Device | 245
Performing a Recovery Installation Using an Emergency Boot Device | 247
Creating an Emergency Boot Device
If Junos OS on the device is damaged in some way that prevents the software from loading properly, you
can use an emergency boot device to repartition the primary disk and load a fresh installation of Junos
OS. Use the following procedure to create an emergency boot device.
Before you begin, you need to download the installation media image for your device and Junos OS release
from
https://www.juniper.net/customers/support/
.
NOTE:
You can create the emergency boot device on another Juniper Networks router or router,
or any PC or laptop that supports Linux. The steps you take to create the emergency boot device
vary, depending on the device.
To create an emergency boot device:
1. Use FTP to copy the installation media image into the /var/tmp directory on the device.
2. Insert a USB device into the USB port.
3. From the Junos OS command-line interface (CLI), start the shell:
user@device>
start shell
%
4. Switch to the root account using the su command:
%
su
Password: password
245
Summary of Contents for MX10016
Page 1: ...MX10016 Universal Routing Platform Hardware Guide Published 2019 10 15 ...
Page 19: ......
Page 86: ......
Page 123: ......
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Page 239: ...Figure 118 Moving the MX10016 Using a Mechanical Lift g100421 242 ...
Page 240: ...5 CHAPTER Troubleshooting Hardware Restoring Junos OS 245 Alarm Messages 249 ...
Page 241: ......
Page 249: ......
Page 277: ...Restricted Access Warning 281 ...
Page 292: ...Jewelry Removal Warning 296 ...
Page 295: ...Operating Temperature Warning 299 ...
Page 304: ...DC Power Disconnection Warning 308 ...
Page 308: ...DC Power Wiring Sequence Warning 312 ...
Page 311: ...DC Power Wiring Terminations Warning 315 ...
Page 320: ...Translation The emitted sound pressure is below 92 dB A per GR63 CORE 324 ...