Patent ID: 8179625
Filing Date: 2012-05-15
Classification: G11B

Abstract:
1. A method of testing a magnetic disk comprising: using a first robotic arm, loading a first magnetic disk having a disk layout onto a first tester; using the first robotic arm, loading a second magnetic disk having the disk layout onto a second tester; using the first tester, running a first test on the first magnetic disk on a first disk portion of the disk layout; using the second tester, running a second test on the second magnetic disk on a second disk portion of the disk layout, wherein the second disk portion is different from the first disk portion, and the second test is being run concurrently when the first test is being run; while the running a first test on the first magnetic disk, after detecting a defect error on the first magnetic disk, storing a location of the defect error, unloading the first magnetic disk, and loading a third magnetic disk; and using the first tester, running a third test on the third magnetic disk on the first disk portion of the disk layout.