The RedHat 7.0 installer will fail to do a valid install if a hard drive w/ more than 16 partitions is used. I have a large (45GB) drive which is set up for 3 Win installs and 4 Linux installs - I tried to install RH7 with the following partitions: hda6 /boot hda18 / LILO fails to install because there are no hda nodes greater than 16. Hard drive will not boot, and boot floppy doesn't work. I eventually got the install to work by manually creating /dev nodes for hda17-22 during the install. The Mandrake (7.0 and 7.1) installer had no problems with this situation.
*** This bug has been marked as a duplicate of 12099 ***