How to delete an iCal calendar safely
Saturday, January 20th, 2007
MacWorld columnist and macOSXHints top dog Rob Griffiths takes time out to throw together a few hints 
on making sure that an iCal calendar is empty before you delete it.
He points out that you can find out what’s left in an old calendar by using iCal’s search feature (make sure only the calendar you are investigating is ticked in the calendar’s list, Select View > Show Search Results).
Or, if you are sure it is empty, highlight it and try to delete it.
If it is empty, iCal removes it without asking any questions. If it’s not, then iCal prompts you to make sure you want to get rid of it.
Tags: Apple Mail Tips, data loss, deleting calendars, iCal, not apple mail