Question : Problem: Windows Sserver /nolowmem boot.ini?

Can someone give me some examples of where we would use the /nolowmem switch in the boot.ini file?

Answer : Problem: Windows Sserver /nolowmem boot.ini?

If you have more than 4GB memory on a PAE system and don't want the kernel to use any of the 1st 4GB and rather have it left for anything else. See http://www.microsoft.com/technet/sysinternals/information/bootini.mspx ("Boot INI Options Reference"):

/NOLOWMEM

Requires that the /PAE switch be present and that the system have more than 4 GB of physical memory. If these conditions are met, the PAE-enabled version of the Windows kernel, Ntkrnlpa.exe, won't use the first 4 GB of physical memory. Instead, it will load all applications and device drivers, and allocate all memory pools, from above that boundary. This switch is useful only to test device driver compatibility with large memory systems.