I'm getting the (unintelligible to me) error message ipmi_si: Could not set up I/O space ERST: Failed to get Error Log Address Range when I try to boot any OS on the grub menu apart from the one I last installed. (Actually, Windows also boots properly.) I wonder if anyone has had this error message, and worked out where it comes from? I googled for it, and it has come up many times; but there seem to be several entirely different suggested causes. I am running CentOS-6.5 on an HP MicroServer. I mention that as some of the explanations suggest that it only occurs on certain machines. -- Timothy Murphy e-mail: gayleard /at/ eircom.net School of Mathematics, Trinity College, Dublin 2, Ireland