> On Jun 2, 2020, at 9:52 AM, Clem Cole <clemc@ccc.com> wrote:
> 
> 
> The good news is that all the DEC systems used 512 byte fixed blocks much later than LSX so driver support is doubtful. 
> 

Except on the RX’s.   The RX01 was 128 byte sectors and the later ones 256 and a odd interleaving strategy.    However, the boot block and the rest of the file systems (both UNIX and RT at least)
just aggregated the smaller (logical) sectors together to make a 512 byte one.