i could have sworn that, on some mailing list recently, someone posted that there was some kind of "reiserfs" option available at install time. there's no mention of this in Appendix H, "additional boot options", in the install guide.
am i misremembering?
Maybe just a bit - the option is there but not supported. Therefore it is undocumented. Boot the installer using "linux reiserfs" and you will be able to format and install to one or more Reiserfs partitions. Note that _upgrading_ a reiserfs root partition is not possible at this time - I am hacking away at this in my spare time. RedHat has stated that they do not support ReiserFS because there are cases in which the file system can become corrupted.
Kevin