🚀 go-pugleaf

Well, it finally happened.  I've got a dead disk.  Here's what I tried
to recover it.  Perhaps you can offer some suggestions?

The corpse is a 400K (single-sided) MFS.  It contains mostly MacWrite
documents, with a few MacPaint documents thrown in for good measure.

Inserting the disk while in the Finder yields a dialog box that says
"This disk is damaged", and offers EJECT and INITIALIZE.  No offer is
made to repair the disk.  I'm using
	Finder 5.3, 1986
	System 3.2, 2-Jun-86.

Then I tried to make a sector copy using
	Copy II Mac (4.2, 1984-85).
This produced messages that blocks 3, 8, and 18 had errors.  I invoked
the bit-copy on tracks 0 and 1.  This should result in an identical copy
of the gronked disk.  Actually, I made a couple bit-copies of the bad
disk.  In the subsequent steps, a copy was used.  The original bad disk
is safely locked away.

I tried the built-in scavenger by booting the Mac with the bad disk while
holding down "option"/"clover".  The system has
	Original skinny-mac ROMs.
Mac churns briefly and spits out the disk.  I expected that, it has no
system folder.  After rebooting with a good disk, the damaged one is still
bad.

So I got out
	Mac Repair 1.0, 1984.
This one made some promises, in exchange for a Shareware fee of 10 Francs
the first time it saved a disk for me.  At least, that's what I think it
said, as all of the messages were in French.  This tool works by moving
salvaged data to a virgin disk.  It churned for awhile, then asked me to hit
the mouse.  Then it rebooted the machine.  The result of this operation was 
another bad disk.  Inserting the disk while in the Finder yields a dialog
box that says "This disk is damaged", and offers EJECT and INITIALIZE.

So I pulled out
	MacTools 4.0, 1984-85.
When I fed the disk in, I got a dialog box that said that the disk was bad
and offered REPAIR, EJECT, MOUNT, INIT, (something else).  I picked REPAIR.
Things cranked for awhile, and I got a dialog proclaiming that the repair
failed.  The copy of the bad disk was left malformed.  It had only one file,
0K long, but it was recognized as a valid disk by the Macintosh (with a new
name like "RepairedDisk").

I tried MacTools again.  This time hitting MOUNT.  The first screen of boot
block info came up.  I clicked on the arrows, reading a block at a time.
When it hit the first bad block, I got a dialog that called the disk bad.
It suggested that I try another one.  Thanks fellas.

My last try involved
	Patch Disk 1.0, Mar 18 84.
This one turned out to be a generic sector editor.  I used Copy II Mac to
sector-copy all of the good sectors to a virgin disk.  Then I used Patch
Disk to read the bad sectors, one at a time, and write them on the
destination disk.  This should turn sectors with bad CRC into good sectors
on the copy.  If a couple of bits of data were corrupted, instead of the
checksum itself, at least some of the files should be retreivable.
The result was the same as Mac Repair, causing me to speculate that all
that tool did was format a target, and copy from source to destination
ignoring read errors.

Any ideas, gang?

Responses to me, please.  I will digest for the net.