What is kexec-reboot?





Kexec lets you boot your Linux kernel into another kernel without going through the hardware reset and reinitialization performed by your system BIOS or firmware. Since this process can take several minutes, being able to skip it reduces your downtime.

The problem with kexec is it's an entirely manual process, requiring you to copy and paste the right kernel, initrd and command line arguments, and hope you got everything right.

kexec-reboot aims to automate staging a kernel for kexec, so that you can reboot more quickly and accurately.