On Wednesday 19 September 2007 11:48, Jonathan Arnold wrote: > Stevens wrote: > > ... > > > > A pc can only use about 3 GB of RAM because the top GB is > > used by the system for peripheral addressing, etc. > > > > Does that only hold true for M$ or are all PCs the same? How > > does one get more than 4GB onto a mobo? Do the new ones > > allow that? > > Here's a good article on the situation: > > http://kerneltrap.org/node/2450 > > There was a long thread about this on the Boston Linux Group's > mailing list recently. There's a lot about the "PAE" (Physical > Address Extension) kernels, as well as some discussion as to whether > they were needed or not. Also, many motherboards map the area between > 3 & 4gb for other duty, so even if I add another gig of RAM, it isn't > clear if I'd actually see it.
If the mainboard is designed to accommodate a CPU with PAE, then it should also have the option (via its BIOS configuration) to map the I/O devices somewhere much higher than the usual 3-4 GB memory hole. > -- > Jonathan Arnold Randall Schulz -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
