A computer system is partitioned during a pre-boot phase of the computer system between a first partition and a second partition, wherein the first partition to include a first processing unit and the second partition to include a second processing unit. An Input/Output (I/O) operating system is booted on the first partition. A general purpose operating system is booted on the second partition. Network transactions are issued by the general purpose operating system to be performed by the I/O operating system. The network transactions are performed by the I/O operating system.