Placeholder install sheet: brackets mark values nobody has recorded.

Reads a floppy image and confirms every sector is legible.

marginscan verify --image A:
1,440 sectors read, 0 bad

Note from the shelf row: 16-bit dos, straight off the floppy image

Before you install

• Runs on: DOS. the application must be 4.0.7 to 4.1.6.
• Space: about 388 KB for the download, plus [WORKING SPACE] while it runs.
• Rights: an ordinary user account; no elevation needed
• Know first: [PREREQUISITE] — what has to be true before this tool will run at all.

Download and verify

Take the build for your platform from the [SHARE] and check it against the digest on the shelf row before you unpack anything.

FC /B marginscan-1.1-dos.zip

Expected: 22e1562bf7ba. The shelf row carries the same digest.

Install

Copy it into place and put it on the path. Nothing here installs a service or a scheduled task.

DOS

Copy the files and add them to the path in AUTOEXEC.BAT:

COPY A:\MARGINSCAN\*.* C:\TOOLS\MARGINSCAN\
SET PATH=%PATH%;C:\TOOLS\MARGINSCAN
MARGINSCAN /v

Check it worked

Check the version first, then run the one command the tool exists for:

MARGINSCAN /v
marginscan verify --image A:
1,440 sectors read, 0 bad

Expected output is the line shown above; anything else means [TO DO: write the failure list].

Removing it

Delete the folder and drop the path entry. The tool keeps no state of its own.

DELTREE C:\TOOLS\MARGINSCAN

If it goes wrong

• [KNOWN FAILURE 1] — the usual fixes for this tool have not been written down yet. Add them the second time somebody hits one.
• Wrong error number or a fault you cannot name: run the tool's own diagnostic first (shelf row).
• Before any repair that writes to a store, take the export — backoff is the tool for it.