While running Spinrite (from GRC.com), one of the screens shows a "Raw Data Snapshot". This usually shows data from hard drive sectors flash past as they are read or written.
On one drive in an HP laptop, a lot of times during the scan, the "Raw Data Snapshot" instead says "Empty Sector", nicely centered in the window.
Is this a message from Spinrite? Is it actual data left over from the manufacturing process? If it's a message from Spinrite, how does it know? What's the difference between an "Empty Sector" and a sector full of zeroes, or full of some other random data?
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