If you run System 7 on your mac and use multiple hard drives or multiple hard drive partitions, you’ve probably run across this alert when you try to unmount one of those icons:
If you’re annoyed by this alert, you can turn it off using ResEdit with the following procedure:
1) Open a COPY of the Finder (ResEdit won’t open the Finder currently in use.)
2) Open “CODE” ID=18. If it asks something about compression, click OK.
3) Go to offset +$13B2.
4) Change the two words there from
from $4EAD $1D42
to $4E71 $4E71
Do NOT make this change if the two words are not $4EAD $1D42.
5) Save your changes and replace the current Finder with your hacked Finder.
6) Restart. The alert should now be history.
This hack has been tested under Finders 7.0 and 7.0.1. It DOES NOT WORK on prior versions of the Finder and is NOT guaranteed to work on future versions.
As with all such quick hacks, use at your own risk.