On Dec 16, 2012, at 8:57 PM, Macs R We <[email protected]> wrote:

> 
> On Dec 16, 2012, at 7:58 PM, LuKreme wrote:
> 
>> Macs R We spake on Sunday 16-Dec-2012@17:41:53
>>> Lion and Mountain Lion both create "hidden" recovery partitions.  If I keep 
>>> an external drive with Lion in one partition and Mountain Lion in another, 
>>> are their respective recovery partitions going to collide?
>> 
>> I'm not sure what you mean by 'collide' but the Recovery Partition will be 
>> 10.8. (As I understand it, 10.7 will not overwrite an existing recovery 
>> partition, and 10.8 will update a Recovery Partition to 10.8).
> 
> As long as a 10.8 recovery partition will correctly service the 10.7 OS 
> partition on the same drive, I suppose it wouldn't be a problem, but will it? 
>  Right of the top of my head, I suspect things like Repair Permissions would 
> get wonky, probably some other things.


I don't know much about how this works, but I don't have a recovery partition 
yet I can still boot with CMD-R and get into the recovery screens.  It seems.  
This is with 10.8.

I originally installed my Lion on a (OS X native software-) Mirror-RAID volume. 
 I was told during the installation that OS X did not support a recovery 
partition on a RAID volume.   This past weekend I used Carbon Copy Cloner to 
move this startup volume to a single SSD (using the complete device).   It 
still had just  the one partition.   I then applied a 10.8 Mountain Lion 
upgrade to it.  It did not say anything about re-partitioning and if I look at 
it in Disk Utility, it still shows just the one full size partition that it had 
before the 10.8 upgrade.   I was able to do CMD-R to get into the recovery 
stuff (trying to repair some user directory ACLs in ~/Library), which I had 
never tried before.  And it worked.  So I wonder if it can install at least 
some of the Recovery stuff in the main partition?   Again, I don't really know 
how this all works.

Informationally, I also added a second SSD and moved my user account to that 
SSD (and changed the user account location in Settings).  And I moved media 
files and mobile device backups to some standard hard disks and linked the 
Pictures / Music and ~Library/Application Support directories to this mirrored 
HD volume.  This early 2008 Mac Pro once again screams in terms of normal every 
day use, where it had been bogging down with 5 year old Hitachi Ultrastar 
enterprise disks that were 66-75% full...   Almost like getting a new machine 
:-)

Chad

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