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D.Finni:

--- Quote from: sigma7 on March 14, 2019, 03:46:19 am ---I've located some original Workshop Supplement disks (perhaps no longer in working order) and found so far:
Set 1:

--- End quote ---
I think the disks in Set 1, from 1984, would be worth a shot.

sigma7:
My scanned floppies database says I scanned these disks in 2001 (with corresponding filenames shown), so they should be trivial to provide once I find the drive with the image files on them:

Mac Supplement, 5/85 Mac Build Disk                          1884.img
Mac Supplement, 5/85 MacStuff 4                              1885.img
Mac Supplement, 5/85 MacStuff 3                              1886.img
Mac Supplement, 5/85 MacStuff 2                              1887.img
Mac Supplement, 5/85 MacStuff 1                              1888.img
Mac Supplement, 5/85 Examples 2                              1889.img
Mac Supplement, 5/85 Examples 1                              1890.img

Mac Supplement, Feb 85 MacBuild                              1891.img
Mac Supplement, Feb 85 MacStuff 4                            1892.img
Mac Supplement, Feb 85 MacStuff 3                            1893.img
Mac Supplement, Feb 85 MacStuff 5, Bad Blocks track 78/77    1894.img
Mac Supplement, Feb 85 MacStuff 1                            1895.img
Mac Supplement, Feb 85 MacStuff 2                            1896.img

Mac Supplement, Nov 84 MacStuff 4                            1897.img
Mac Supplement, MacStuff 3                                   1898.img
Mac Supplement, MacStuff 2                                   1899.img
Mac Supplement, MacStuff 1                                   1900.img

I suspect these are all in Mac format.
My estimate is that the last 4 are from the Nov '84 set.

BTW, I've now found (condition unknown):

From Set 1:
MacSupplement 2, Workshop 2.0, LisaDisk.
MacWorks, LisaDisk
MacWorks with, LisaBug, LisaDisk

From Set 2:
MacWorks, LISA Disk, February '85
- with my handwriting "XL 2.0"

Edit:
Formatting fix as Preview wasn't working  :-\

Edit2:
Found more floppies

sigma7:
All the disks scanned fine, so AFAICT, this 7MB archive contains all of the Mac Supplement disks that I ever received:

drive.google.com/file/d/1JbWRuPRUThtsSQPC5uZ1SEOlTcG9U0wR/view?usp=sharing

D.Finni:
Thanks. I will try the ones from 1984 and see if I can build a Macintosh application that runs without bombing. ;-)
By the way, people running Mac OS X can build MFSLives, the file system plugin for MFS, and mount these old MFS disks in the Finder. Comes in handy.

Regarding the Lisa file system, I spent about two days reverse engineering the v3 Lisa file system by creating new files and catalogs using the Workshop File Manager, then examining the changes to the on-disk data structures. I'm not sure it's actually a B-Tree structure, as some others have stated. I also found this little graphic (attached below).

Once the MDDF is located, I think it's possible to walk the entire volume and access every file without the aid of tags. But I still need to identify and resolve a few more data structures.

Looking forward to Apple's approval of the Lisa OS source release so we can have a better understanding of the file structures...

rayarachelian:
Yeah, I'm doing the same thing, and will add to lisafsh-tool as well as create a tool to rebuild the tags.

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