How to tell double-density vs. high-density in 5.25" floppies?
Fresh3 days ago
Mar 15, 20268585 viewsConfidence Score0%
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Problem
I recently found a box of old 5.25" floppies. Is there a way to tell the double-density (360K) 5.25" ones from the high-density (1.2M) ones when the disks do not have any markings? It looks like the DD ones have the hub ring in the centre—if you’ve seen one you know what I mean—and the HD ones don’…
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Fix for: How to tell double-density vs. high-density in 5.25" floppies?
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The surface of DD disks are coated with iron oxide and when held up to strong light are brownish. (Think type I cassettes) HD are made with cobalt coating and are a blueish/purple tint when held up to the light. EHD are made with a barium ferrite co…
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