4 GB RAM hardware but only 3.4 GB real/avail

Bill Moran wmoran at potentialtech.com
Mon May 11 21:25:29 UTC 2009

In response to "Len Conrad" <lconrad at Go2France.com>:

> I'm sure this has been answered but I can't Google it.

Really?  This question has been asked a gazillion times ...

> Where's the 600 MB gone to?

i386 arch can only see 4G total, but much hardware reserves the
last 500M or so for special hardware addressing.

The best option it so move to using amd64/EM64T arch, which doesn't
have this problem.

Bill Moran

More information about the freebsd-questions mailing list