Description

"Missing OS" message in a loop while trying to boot

Symptoms

"Missing OS" message in a loop while trying to boot

Solution

Check if there is any empty or non-bootable USB drive connected to the SRX, by default the SRX will try to boot from the USB and if the USB is not eligible for booting then you will get this message, in this case the solution is to plug out the USB.

Refer to https://supportportal.juniper.net/s/article/SRX-In-what-order-are-storage-media-booted-during-the-boot-sequence-of-SRX-devices?language=en_US to review the boot order on different SRX platforms.

Modification History

2024-04-17 : Article Created