Link. "$ dd if=/dev/disk1s2 of=/dev/null". If it hangs indefinitely or I/O Errors, replace the the hard drive. If it completes, the hard drive has no bad blocks.
Gordon's shares
Link. "$ dd if=/dev/disk1s2 of=/dev/null". If it hangs indefinitely or I/O Errors, replace the the hard drive. If it completes, the hard drive has no bad blocks.