If you have a new Macintosh 5200, 6200, 7100, 7200, or 7500, you may have encountered a conflict with Disk Doctor, in which many problems were reported, fixed, and now your Macintosh won’t start normally, and/or your files seem to have disappeared. If so, please follow these steps:
1. Please read this entire document before beginning. Do not copy ANY files, including tools you might use while following these instructions, to your hard disk until you have completed the steps detailed below.
2. Resolve the conflict using Norton Disk Editor, and then run Disk Doctor
IMPORTANT: If at any point in the steps below you do not see what the instructions suggest you will, stop there, choose “Quit” from the “File” menu, do not save any changes, and start over with part one, “Check for data…”
• Start your Macintosh from a CD ROM or external hard disk (if neither of these options is available, please contact Symantec Technical Support for assistance).
• Insert the “Utilities Disk #1” disk from your Norton Utilities set into the floppy drive. Launch “Norton Disk Editor.”
• In the Volume Selection Dialog, choose “Scan SCSI Bus.” After the scan is complete, choose the internal hard drive, and click “Open.” The directory will be analyzed, and a Directory View window will open.
• Choose “Read Sector” from the “Objects” menu.
• In the Read Sector dialog, click on the button marked “Decimal,” then click on the button marked “Sector Number.”
• In the box labeled “Sector Number,” type the number “2003.” Click “Read.”
• The window which opens should be an Extents Tree View window. Choose “View In Hex” from the “Display” menu. The window will change to a hexadecimal view.
• The hexadecimal view consists of columns of numbers: 2 columns of three digits, then 4 columns of 8 digits. On the top line, the three digit columns will look like “000 $000.” Make sure you can read this line--if you need to, use the scroll bar.
• If the third column of 8 digits on the top line reads “01000003,” then you should perform one of the actions in the section “Resolve the Conflict,” below. If those digits read anything else, your problem is unusual--you can Choose “Quit” from the “File” menu, and you should contact Symantec Technical Support.
• Click once on the “01” of the “01000003” that you found in the third group of 8 digits on the top line of the hexadecimal view. The “01” should highlight.
• Type “00000000” (that’s eight zeroes). When you’re done, the “01000003” should be all zeroes, and the highlighting should be at the start of the fourth group of eight digits on the top line.
• Choose “Write Sector” from the “Objects” menu. When you do this, nothing obvious will happen, but if you pull down the “Objects” menu again, “Write Sector” should have changed to gray.
• If you have a 500 meg hard drive, go on to the section “You are Finished!” If your hard drive is larger, continue...
• Only if your hard drive is larger than 500 meg, perform these additional steps:
• Choose “Catalog Tree Header” from the “Objects” menu. A new screen will appear. In the upper left of the window, the Absolute Sector Number of the view appears. If it says “2059 of [any number]”, then stop here, and go on to the section “You are Finished!”
• If the Absolute Sector Number reads any number LARGER than “2059 of [any number],” for example, “2065 of [any number],” then proceed; otherwise, go on to the section “You are Finished!”
• Choose “Read Sector” from the “Objects” menu.
• In the Read Sector dialog, click on the button marked “Decimal,” then click on the button marked “Sector Number.”
• In the box labeled “Sector Number,” type the number “2059.” Click “Read.”
• The window which opens should be an Extents Tree View window. Choose “View In Hex” from the “Display” menu. The window will change to a hexadecimal view.
• If the third column of 8 digits on the top line reads “01000003,” then you should NOT run Disk Doctor on this hard drive until you have completed these instructions. If those digits read anything else, go on to the section “You are Finished!”
• Click once on the “01” of the “01000003” that you found in the third group of 8 digits on the top line of the hexadecimal view. The “01” should highlight.
• Type “00000000” (that’s eight zeroes). When you’re done, the “01000003” should be all zeroes, and the highlighting should be at the start of the fourth group of eight digits on the top line.
• Choose “Write Sector” from the “Objects” menu. When you do this, nothing obvious will happen, but if you pull down the “Objects” menu again, “Write Sector” should have changed to gray.
You are Finished!
To leave the Disk Editor, choose “Quit” from the “File” menu. The residual data will no longer interfere with Disk Doctor, and you should now run Disk Doctor (which is found on the Norton Utilities “Emergency Disk”). Disk Doctor will report several problems, which you should fix--after which your data should have been restored to its initial state.
Another option:
If you have a complete back up of your data, you could:
• Reformat the 500 Meg hard drive. Be sure you perform a low-level format using Apple’s Drive Setup or another formatting tool--don’t just delete the files or Erase the disk.
• Restore your files.
Reformatting your drive will remove the residual data, but for many users will be much less convenient and more time-consuming than using the method detailed above to remove the residual data, and allow Disk Doctor to repair the drive. We recommend that you use that method.
