>
>First, thanks to all of you for your answers!
>
>Some software do exist (under DOS) to do the job of reading/writing/formatting
>old 5"1/4 floppies in rx50 format ... with various level of success.
>
>1 - rainbow driver
>
>	raind112.zip
>	or
>	rx50.zip
>
>    Those are drivers to make behave drive A: (NOT B:!) as an rx50. It is
>    supposedly able to format 'em. With some luck it may work on a non
>    rainbow PC. Didn't work for me.
>
>2 - dos utilities
>
>	22disk.zip
>	or
>	fdcdemo.zip
>
>     They contains executables and drivers supposed to read/write at least
>     rx50 format.
>     I succeeded in READING an already formatted rx50 floppies but I couldn't
>     write nor format any.
>
>
>So, In cae you want to format/read/write rx50 floppies on your ol 5"1/4 drive
>you have to tsarting point to investigate further!
>
>good luck!
>
>BTW my NetBSD-vax didn't end sadly without floppies: I've found a kind soul
>    to format 'em on a VAX-VMS and put the boot/root images on. Now I'm
>    stuck a bit further, but that's another story ...

There are an RX50-driver for DOS, which can both read, write and format
RC50 floppies on 1.2M AT drives.

You can find it on ftp.update.uu.se, under /pub/ibmpc somewhere.

	Johnny