Comment # 5 on bug 898265 from Michael Chang

Hi Istvan,

An invalid/obsoleted menu.lst caused the problem. I know we can try to improve
the situation by doing more sanity checks, but that's a nice to have and also
any more checks could be still insufficient and time consuming. (os-prober has
many reports that it takes too long in probing and make it notorious..). 

Thanks for report and your feedback.