[cc lang=bash]
macbook-airport:LaunchDaemons vslip$ sudo dd if=/dev/rdisk0s2 of=/dev/null bs=1m count=10240
10240+0 records in
10240+0 records out
10737418240 bytes transferred in 54.008514 secs (198809732 bytes/sec)
macbook-airport:LaunchDaemons vslip$
macbook-airport:LaunchDaemons vslip$
macbook-airport:LaunchDaemons vslip$
macbook-airport:LaunchDaemons vslip$ sudo dd if=/dev/rdisk0s2 of=/dev/null bs=1m count=10240
10240+0 records in
10240+0 records out
10737418240 bytes transferred in 54.161863 secs (198246842 bytes/sec)
macbook-airport:LaunchDaemons vslip$
macbook-airport:LaunchDaemons vslip$ sudo dd if=/dev/zero of=~/10G bs=128k count=81920
81920+0 records in
81920+0 records out
10737418240 bytes transferred in 50.139549 secs (214150674 bytes/sec)
macbook-airport:LaunchDaemons vslip$
macbook-airport:LaunchDaemons vslip$
macbook-airport:LaunchDaemons vslip$
macbook-airport:LaunchDaemons vslip$ sudo dd if=~/10G of=/dev/null bs=128k count=81920
81920+0 records in
81920+0 records out
10737418240 bytes transferred in 42.049443 secs (255352211 bytes/sec)
macbook-airport:LaunchDaemons vslip$
[/cc]