Norton AntiVirus Damaging to Mac OS 8.1 Disks -- Symantec Technical Support has confirmed reports of intermittent disk corruption relating to using Norton AntiVirus for Macintosh, though only under Mac OS 8.1 and only with normal HFS-formatted volumes. Symantec believes the problem relates to Norton AntiVirus Auto-Protect and SafeZone scanning and recommends that Mac OS 8.1 users disable SafeZone scanning until Symantec can come up with a solution. John Christopher, Data Recovery Engineer at DriveSavers, commented that the problem results in the disk catalog, extents, and a portion of the disk (from 25 MB to 100 MB) being overwritten with a pattern of F's. His suggestion for data recovery is to try the UnErase utility with Norton Utilities for Macintosh and scan for file types associated with applications you use. If that fails and you have no recent backup, John noted that DriveSavers has proprietary utilities that can often recover data when commercial utilities fail. [ACE]
Data Tables in Microsoft Excel 2008
Data Tables let you see how the results of a formula change as its underlying variables change. After entering data, select the entire table and choose Data > Table. Then tell Excel which row input cell and column input cells you want the table to use. Finally, click OK. Excel will crunch the numbers and present a new Data Table.
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