MFM, RLL etc to USB

[SP]

I only have notice of one 5.25 floppy disk box for USB... discontinued.

I should like to go more far than the MFM-USB adaptor. The helpful think
would be to design one ISA expansion box pluggable using USB 2.0

Sergio

----- Original Message -----
From: "Al Kossow" <aek at bitsavers.org>
To: <classiccmp at classiccmp.org>
Sent: Wednesday, May 25, 2005 6:54 PM
Subject: Re: MFM, RLL etc to USB


> Anybody know if there exist adapters for old disk drives (e.g.- MFM, RLL
> etc.) to USB?
> Preferably USB 2.0. I may need to read the contents of a bunch of old
> hard
> drives.  I can probably cobble together some old ISA systems with the
> right
> controllers if I really must, but maybe someone's created a simple
> solution.
>
> Chris
>
> --
>
> This same subject came up a month or so ago.
>
> You have to use the same controller as the drive was formatted with,
> since there is no
> way to tell what the actual on-disk sector format was for a random MFM
> or RLL disk.
>
> Adaptec, for example, used their own ECC scheme on the sector.
>
> There is (currently) nothing available like the Catweazel for capturing
> bit level data
> for hard drives.
>