thanks,
After editing lilo.conf, you have to run lilo for it to take effect. If you made a boot floppy, you can boot off that, run lilo, then boot from the hard drive.
that was my second though ... yes, i should do it,but i didn't make it.
If it boots up from lilo, you can press the <SHIFT> key when you see the lilo prompt. That will list your possible boot options.
<SHIFT> seems not to be work ...i think i will reinstall again, and try not to forget to make boot floppy ...
ryoji