Data Rescue 3.0b: frequently asked questions

Check SCSI connections, IDs and terminations.
Disconnect unnecessary devices.
Bad SCSI cables can cause the Macintosh to freeze. Try with better cables.
Try to disable system extensions by pressing 'shift' at startup. If you need some system extensions, like drivers for SCSI boards or disks, use the Extension Manager to disable all other extensions.
If Data Rescue still crashes and you use Macsbug, please send the output of 'IP' and 'SC' to support@wildbits.com.

Sometimes, your volume contains obsolete catalog entries. If Data Rescue finds more than 1 catalog entry for the same file in your volume, it displays them all. You should check which is the 'correct' entry and hide all others, otherwise Data Rescue will recover the first entry in the list and generate 'file already exists' errors for the others. To find which is the correct entry, check dates and file contents.
Special protection or optimization tools such as 'TechTool Pro' can leave partial or full catalog copies on your volume (incidentally or on purpose). If so many duplicates will appear in Data Rescue's list. You can get rid of these duplicates with item 'Disable Duplicates' in the 'Expert' menu.

Data Rescue handles 'hardware' RAID volumes transparently. However, the LUN of your volume must be 0.
Data Rescue handles 'software' RAID volumes (such as SoftRAID volumes) only if you can access them through the driver.