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OCI: Latest Installed Kernel Fails to Boot 

in Linux

Applies to: 

Oracle Cloud Infrastructure - Version N/A and later 

Linux x86-64 

Symptoms 

Instance fails to boot after updating to the latest UEKR7 kernel. 

The console log shows the following: 

error: ../../grub-core/fs/fshelp.c:258:file 
`/initramfs-5.15.0-206.153.7.el8uek.x86_64.img' not found. 

Cause

There is not enough space left in /boot to store the initramfs for the new kernel. 

$ sudo df -h /boot 
Filesystem      Size  Used Avail Use% Mounted on 
/dev/sda2      1014M 1006M  8.7M 100% /boot 

Solution 

1) Using the Cloud Shell or a serial console connection, reboot the system using another previously installed kernel from the GRUB menu.

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