Christoph Dalitz <christoph.dalitz@hs-niederrhein.de> writes:
> This brings up another question:
> Were it possible to use the Postgres data directory from Mac OS X with a Postgres
> server on a different OS (eg. Linux, FreeBSD)? In other words: is the contents
> of the PGDATA directory plattform dependent?
PGDATA is definitely hardware dependent: endianness, alignment padding,
and floating-point format, for starters, will vary across machines.
It might work to copy the files to another OS running on similar
hardware. I've never tried it.
regards, tom lane