Wed, 26 Aug 1998 09:03:09 -0700
Just to be perfectly clear: you can force any folder to be the blessed
folder by putting its directoryID into the longword 92 decimal (5C hex)
into the THIRD block of the disk (block 0 and block 1 are boot blocks,
block 2, the third block on the disk, is the Master Directory Block or
The Finder keys off the combined presence of "System" file and a "Finder"
file to direct blessing. If you separate these two inside the currently
blessed folder, the folder will be unblessed and the Finder will start
keeping an eye out for new blessable folders. The moment you open
another folder that has a "System" and a "Finder", that folder gets
You can bless any folder while you're running by first going into the
current blessed folder, moving the Finder into, say, the Extensions
folder, then closing that [old] system folder and opening the folder
you'd like to be blessed instead. Once the new folder has been blessed
you can pop the Finder out of the Extensions folder in the old system
folder without changing the blessing.
Hope that clears it up,
>No, what often happens is people want to have multi booting and such, or force
>folders to be bootable that acctually haven't be read and blessed by MacOS
>they have been artificially created by tools like the HFSUtils. But if we put
>directoryID into the first long word of the second block, it will become
>Pat Dirks wrote:
>> >I'm using vMac (www.vmac.org). What often happens, is that people can't
>> >System Folder, is there any way to force the a specific folder to be
>> >outside the MacOS.
>> Well, I'm not sure what problems you might be having blessing a system
>> folder: if you've successfully un-blessed any existing system folder (by
>> moving the Finder into some subfolder, for instance) just opening the
>> intended new system folder should take care of the blessing.
>> I don't know what means you have at your disposal "from outside the
>> MacOS" but the Blessed Folder is recorded by a DirectoryID stored in the
>> first longword of the volume's Finder Info, which is 92 (decimal, 5C hex)
>> bytes into the volume's master directory block (block 2, third 512-byte
>> block on the disk). You could always write the DirectoryID of your
>> favorite folder there...
>> Hope that helps,
>> -Pat Dirks.
>-Andre Masella (firstname.lastname@example.org)