| 摘要 |
PROBLEM TO BE SOLVED: To provide a magnetic disk test method or a certifier which reduces a write connecting region of test burst signals in a test track, which become non-test areas, and also reduces error of defect detection of the write connecting region when errors of a magnetic disk are detected. SOLUTION: A test burst signal is overwritten from a write end position over a connecting region determined by positional deviation between a read head and a write head and a peripheral speed of a disk. Since, therefore, the overwritten signal portion is overlapped on the test burst signal written at a write start point, it is possible to reduce a width of the connecting region to thereby reduce a test inhibit region. COPYRIGHT: (C)2009,JPO&INPIT
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