Yes. You can take a hard disk that you have been using under System 7 and
attach it to a Macintosh running AppleShare 2.0.x file server software.
However, you must first rebuild its desktop, as follows:
1) Attach the hard drive to a Macintosh running System 6.
2) Restart the Macintosh.
3) Hold down the Command and Option keys while you restart.
4) The system will ask if you want to rebuild the desktop. Click OK.
Once the system completes its work, your desktop is rebuilt, and you can
attach the hard drive to the AppleShare server.
Technical note: You need to rebuild the desktop because System 7 puts a
desktop database on hard drives and this desktop database is not recognized
by AppleShare 2.0. Rebuilding the desktop under System 6 creates the
older-style desktop file.