Re: Blessing query
- From: Chris Ridd <chrisridd@xxxxxxx>
- Date: Mon, 01 Aug 2005 09:53:06 +0100
On 1/8/05 9:45, in article
dcknem$18n$1@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx, "Dan"
<dan.mitchell@xxxxxxxxxxxxxxxxxxx> wrote:
> Would someone please explain what "blessing", as applied to a Mac system
> actually is, when it is needed, and how it is accomplished ?
It tells the machine which copy of the OS to run when booting.
It is more of an OS 9 thing, because with X it is quite hard (perhaps
impossible) to have multiple copies of the OS on the same partition. Though
if you're running on older machine it might need some OS X booting
assistance which blessing can give. (See the bless man page.)
IIRC on OS 9 if you dragged the Finder in and out of a "System Folder", it
would cause that "System Folder" to be blessed.
On OS X, there's a "bless" command in /usr/sbin which will let you do this
stuff yourself (with admin privileges). I suspect the OS X Startup Disk
preferences pane calls bless under the hood.
There's some technical info in the bless man page.
Cheers,
Chris
.
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