Hi folks, Today, I installed FC2 on a dual Opteron-140 with 12Gig RAM. The install would only work if I added "mem=1024M" or similar as a kernel option. After the install (which went nicely), the system would only boot if less than 4Gig was specified using the kernel option "mem=3900M" or similar. Anything over 4Gig resulted in an immediate re-boot (reset?) within a second or two of the attempted boot. This machine has successfully run both SuSE and RHEL v3. I would now like to use FC2 but am disappointed by the (apparent?) lack of support for 12Gig RAM. I've tried searching for information on Fedora large-RAM support but am making not headway. Are there any special kernels or options that I could try with FC2 to get it to recognize all of the RAM? Or should I just go back to RHEL 3? thanks, Ed === PS: System is an MSI-8131 MB with dual Opteron-140 -- Edward H. Hill III, PhD office: MIT Dept. of EAPS; Rm 54-1424; 77 Massachusetts Ave. Cambridge, MA 02139-4307 emails: eh3@xxxxxxx ed@xxxxxxx URLs: http://web.mit.edu/eh3/ http://eh3.com/ phone: 617-253-0098 fax: 617-253-4464