I got the following problem after my FC3 install: Losing too many ticks! TSC cannot be used as a timesource. Possible reasons for this are: You're running with Speedstep, You don't have DMA enabled for your hard disk (see hdparm), Incorrect TSC synchronization on an SMP system (see dmesg). Falling back to a sane timesource now. I have ide=nodma in the boot parameters, since I was not able to complete the install with that parameter. If I try to take this parameter out of the grub.conf, I get the below and the machine does not boot: hdc: cdrom_pc_intr: The drive appears confused (ireason 0x02) ide-cd: cmd 0x1e timed out hdc: lost interupt I also tried "ide0=dma ide1=nodma" with the same problem (CDROMs are hdc and hdd on ide1) Then I tried "ide=nodma ide0=dma". It boots, but I dont know if it fixes the original problem... Should I leave "ide=nodma" in and live with the first warning? Is this just a warning that can be ignored or is there something that could actually go wrong if I use this as a production server? I am surprised about this whole "ide=nodma" thing anyway. It seems that the only way to get Fedora installed on any of my machines is to use "ide=nodma"as boot params. Sometimes I even seem to need "allowcddma". My machines are by no means special, just standard IDE controllers with a bunch of IDE HDs and IDE cdrom... What is the best practise for this case? Thanks, MARK