Mac OS X: Terminal window is too small, or doesn't appear
Symptoms
Terminal is a utility for executing command line instructions in Mac OS X. If its window is very small and can't be resized (Mac OS X 10.3, 10.4), or does not appear at all when Terminal is opened (in Mac OS X 10.5) make sure the Monaco font is enabled.
Products Affected
Mac OS X 10.4, Mac OS X 10.3, Mac OS X 10.5
Resolution
Terminal needs Apple's Monaco font. If that font is disabled or missing, the Terminal window will be very small and unusable, or may not appear at all.
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Use Font Book to enable Monaco in the All Fonts collection. If you'd previously picked a different custom font for Terminal windows, enable that font, or select a different font.