> On Aug 12, 2016, at 2:11 PM, Chuck Guzis <ccl...@sydex.com> wrote:
>
> On 08/11/2016 10:50 PM, jim stephens wrote:
>
>> That sounds like someone just set a Cipher 990 or such to 6240 GCR
>> and overwrote it. The 1600bpi was residue which was previous tape
>> contents?
>
> No, that's the odd thing--both files (tar) were complete from beginning
> to end. The first was a smaller version of the second, but otherwise
> complete. We'll never know how the thing got that way.
I think some drives can handle mid-tape density changes. It may even have been
done by DEC, though I may be confusing that with the odd case of RSTS
distribution tapes which started out with a DOS-11 label and then switched to
ANSI labels.
paul
