17 Jan
2005
17 Jan
'05
3:53 p.m.
Doc wrote:
I have formatted disks for an RX50 on the 1.2MB
drive, written data
to them on that drive, and used them on a PDP-11. I have also used
floppies to back up an RSX-11S disk on "real" RX50 disks, transcribed
that to PC, overwritten them on the PC without a low-level format, and
read them on the PDP-11. I have had some floppies fail, but they always
failed either on the RX50 drive *before* they were ever in the 1.2MB
drive, or they failed format on the 1.2MB drive before they ever made it
to the PDP-11.
RX50 and PC 1.2M formats are both 96 TPI, so this says exactly
*nothing* about whether you can use 1.2M drives to write 360K disks
reliably (which you can't).
I *can* say that in writing, overwriting,
transcribing, and reading
RX50[0] floppies between a real PDP-11 and a Linux PC with a 1.2MB 5.25"
drive, track width has never been an issue.
Because they're identical. Nothing to do with PC 360K format.