Greetings. We would like to change the BIOS settings on our headless compute nodes to enable PXE booting which is disabled in the default configuration. Reading and writing with /dev/nvram appears to work but on reboot the change in CMOS is recognised, assumed to be a corruption (it might be a corruption if /dev/nvram is not properly supported) and prompts to be reset. Is there a way round this? There is no support for a serial console in the BIOS. The nodes have a floppy disk. Any thoughts on alternatives? Thanks - Andy.