Problems reading older disk on newer drive

[Vintage Computer Festival]

I think we've discussed this before.  Sorry if we're re-treading old
ground.

I'm trying to read a disk an old double-density PC formatted disk on a
high-density drive.  I can read the directory and certain small files just
fine, but any files that are larger than a few sectors (or perhaps that
span a track) return "Sector Not Found" errors.  What is the deal with
that?

This is under DOS 6.22.  Is there a way to get DOS to recognize that this
is a double-density disk and to perform whatever internal magic is
necessary to read the disk properly?  Or is this an issue of hardware?

-- 

Sellam Ismail                                        Vintage Computer Festival
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International Man of Intrigue and Danger                http://www.vintage.org

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