On a 2 GB /dev/hdb, mkswap fails on any partition located
past the 1024 cylinder boundary. The error given by mkswap
is "mkswap: error: swap area needs to be at least 40kB".
This does not seem to be affected by the ordering of the
partitions in the partition tables, nor by whether the
partition has been created as a primary partition or an
extended partition. I have not been able to confirm that
the 1024th cylinder is the exact Magic Breaking Point.
(Currently, abusing that particular location of that
particular disk would most decidedly break my machine
altogether, since it is right in the middle of a huge /usr
-- right now I would have to do a complete reinstall) I
_have_ observed that placing a swap partition low works,
but high (around cylinder 1600 on this disk) breaks mkswap.
this seems to work without any problems for me. Please reopen with more
information this this
still fails with newer Red Hat releases.