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You are here: MacNN Forums > Enthusiast Zone > Classic Macs and Mac OS > Blessings

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Forum Regular
Join Date: Oct 1999
Location: Ventura
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Apr 13, 2000, 04:21 PM
I'm not really familiar with "blessing" Why is it done and what is accomplished?
Dedicated MacNNer
Join Date: Mar 2000
Location: Oberlin, OH, USA
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Apr 13, 2000, 05:17 PM
Blessing is setting the system folder to be used at startup. It is accomplished as detailed in http://forums.macnn.com/cgi-bin/Forum1/HTML/000655.html

Simon Kornblith
Computer Consultant

[This message has been edited by Simon Kornblith (edited 04-13-2000).]
Barney  (op)
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Apr 13, 2000, 09:53 PM
Thanks for your reply, Simon. The page you sent me to is the very thing that brought on my question. What I really want to know is what is the reason for doing it in the first place. What conditions would be present to prompt someone to do this? And what problems are eliminated by going through the process?
Art D
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Apr 14, 2000, 01:30 AM

I'm certainly no expert on this subject, but I think I can give you a basic answer to your question anyway.

When your computer first starts up, it looks for a folder that contains the Macintosh operating system. The folder ID number is stored in the boot blocks of the hard drive. So, it first checks the boot blocks to see what folder, if any, has been specified as containing the operating system.

If a folder has been specified, it looks in that folder for the System and Finder files. If found, it will use the information in these files to continue the startup process. If one of these files cannot be found (missing or corrupt), it will display a flashing question mark on a disk.

Now, if the System or Finder files have been replaced (or sometimes even for unknown reasons) you will probably need to re-bless the System Folder. "Blessing" the System Folder means identifying the folder containing the Mac operating system and writing that information to the boot blocks. A blessed System Folder will always have a custom icon: a small computer (older systems) or the Mac smiling face.

More information about the boot blocks can be found in Apple's TIL #3082. If interested, here's the URL:

Hope this helps a little anyway,


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