CentOS-7-x86_64-LiveKDE-1511.iso crashes on my AMD/ATI Radeon machine. I installed CentOS-7.2 by first installing CentOS-7-x86_64-LiveKDE-1503.iso, then appending GRUB_CMDLINE_LINUX_DEFAULT="initcall_blacklist=clocksource_done_booting" to /etc/default/grub and running update-grub. My question is: would there be any way, short of re-compiling the ISO, of altering the grub.cfg seen when booting from a USB stick? -- Timothy Murphy gayleard /at/ eircom.net School of Mathematics, Trinity College, Dublin