In article <[log in to unmask]>, [log in to unmask] says...
>
>Greetings!
>
>A week or so ago, we replaced a 1503 DDS drive with a 1533 DDS2 (aka
A3183A)
>and discovered all the older tape media not marked MRS became read-only
when
>inserted in the new drive.
Yeah me too.