On 23/1/20 12:44 am, Gary Stainburn wrote: > ... > As I will probably only have one chance to fix this (without having to get the ISP's help again) I was wondering if there are any clear instructions on how to remove a failed kernel RPM update, returning the server to the state it was in prior to the YUM update? > ... If you do not want to involve the ISP ever again when a kernel won't boot, you can configure a fallback kernel [0]. I've used something similar a very long time ago when the main boot loader was LILO - it was much easier to do this kind of thing with it. [0]: https://anindya.me/2011/09/17/grub-fallback-after-kernel-panic/