How to tell if the hard disk 4K is aligned?

  
Some friends have heard that if the hard disk is not aligned 4K will affect the performance of the hard disk, then how to identify their own hard disk does not need 4K alignment? This requires the use of AS SSD Benchmark software ~1. First download AS SSD Benchmark: AS SSD Benchmark Chinese version download 2. The first time you run AS SSD Benchmark will automatically detect whether the SSD hard disk is aligned 4KB, as shown below Show, iaStor – OK and 1024 K – OK, indicating alignment 4KB
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