The Macintosh OS needs enough memory to operate normally. If you assign a large portion of memory as shared memory, you need to make sure that you still have enough memory left for the Macintosh operating system (OS) to operate normally. The PC Setup control panel does not do any verification of how much memory you have assigned as shared memory. You must make sure that you are not assigning more memory than you have available as shared memory. For example, if you have 8MB of RAM installed in your Macintosh and set the PC Setup control panel to 4 MB of shared memory you could run into problems if the Macintosh OS takes up more than 4 MB of RAM. If you run into this problem, the best solution is to purchase additional RAM. You can also try to reduce the number of extensions and control panels. This reduces the amount of RAM the Macintosh OS requires.
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