https://community.hpe.com/t5/proliant-servers-ml-dl-sl/disabling-cpus/m-p/2480693#M1696 We have a 6400R running NT 4.0 with 4 active CPUs. Due to software licensing limitiations we need to disable all but one of them. Can this be done, and if so where do I find documentation on how to do it? <BR /> <BR />I do not have access to the machine to get the serial number, however I can get it if necessary. Tue, 09 Jan 2001 00:00:00 GMT Ayman Altounji 2001-01-09T00:00:00Z https://community.hpe.com/t5/proliant-servers-ml-dl-sl/disabling-cpus/m-p/2480693#M1696 We have a 6400R running NT 4.0 with 4 active CPUs. Due to software licensing limitiations we need to disable all but one of them. Can this be done, and if so where do I find documentation on how to do it? <BR /> <BR />I do not have access to the machine to get the serial number, however I can get it if necessary. Tue, 09 Jan 2001 00:00:00 GMT https://community.hpe.com/t5/proliant-servers-ml-dl-sl/disabling-cpus/m-p/2480693#M1696 Ayman Altounji 2001-01-09T00:00:00Z https://community.hpe.com/t5/proliant-servers-ml-dl-sl/disabling-cpus/m-p/2480694#M1697 Add /onecpu to the boot.ini file. Wed, 17 Jan 2001 00:00:00 GMT https://community.hpe.com/t5/proliant-servers-ml-dl-sl/disabling-cpus/m-p/2480694#M1697 Ayman Altounji 2001-01-17T00:00:00Z https://community.hpe.com/t5/proliant-servers-ml-dl-sl/disabling-cpus/m-p/2480695#M1698 You may also be able to use the System Configuration Utility to mark the processors as disabled also. Tue, 13 Feb 2001 00:00:00 GMT https://community.hpe.com/t5/proliant-servers-ml-dl-sl/disabling-cpus/m-p/2480695#M1698 Ayman Altounji 2001-02-13T00:00:00Z