Can I install Snow Leopard on the new Mac Mini

I would like to upgrade from my Mac Mini 2009 (2.26 Ghz with Snow Leopard) to the new Mac Mini just released which will come with Lion. However, I would prefer to run Snow Leopard. Are there any ways to install Snow Leopard on the new machine?

Mac Mini, Mac OS X (10.6.2)

Posted on Jul 25, 2011 3:01 AM

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Posted on Sep 28, 2011 12:53 PM

OK: Back from London! Having had some time to consider the problem, I have concluded that this bump in the road is not much different than previous bumps...


Then, as now, I have concluded that I must continue to move forward, and live with Lion, rather than crowbar Snow Leopard into my Mac Mini.


For example, I was disappointed to see when I opened my hard disk, that the amount of space remaining was no longer listed at the bottom of the window. But I have discovered that going to the VIEW menu and selecting SHOW STATUS BAR now restores that functionality. Again, as in the past, answers will appear to most of the slight glitches that Lion brings to the table.


So my only problem that remains is the Quicken problem: until Intuit comes up with a suitable Macintosh solution (unlikely given their Mac history), I need Rosetta capability. Hence: Virtualization and the wait until Apple authorizes Snow Leopard within a virtual machine.


But for those of us that do not want to wait, Ivan Drucker has documented two ways to get Snow Leopard to run under Parallels; I used the first method: http://www.ivanexpert.com/blog/2011/08/snow-leopard-as-a-parallelsvmwarevirtualb ox-guest-os/


I upgraded Parallels to version 7 (before I was aware that the article gets Snow Leopard to run under version 6). Some comments to Ivan article indicate they were unable to get his solution to work in version 7. However, I upgraded to Build 7.0.14922; Revision 693916; September 13, 2011 of Parallels 7).


Then I upgraded my 2GB Mac Mini to 8GB (online for $87 including overnight shipping! As Bill Gates would say: "You can never have too much money or too much RAM!), and allocated 2GB to Parallels.


After a couple of initial glitches, it is working like a champ today (I have posted a couple of comments to Ivan's article which discusses my hiccups and their solutions).


User uploaded file

So until Apple unlocks Snow Leopard, here is a simple solution to my (and perhaps some others?) problems.

670 replies

Dec 9, 2011 2:31 PM in response to macmedia

So I went out and bought the Mini Server. After going through the motions, I did a geekbench and it came up with 6225. It was much too slow (but still better than the 3500 when I first installed 10.6.8 without the plist modifications). So retracing my steps I found out that I took too many steps in getting it configured....


What I did was I installed 10.6.6 off of the MBP early 2011 dvd directly onto a spare drive hooked up via USB from my MBP. I then upgraded it to 10.6.8. I REMOVED the lion drive from the mac mini and copied the plist and changed the permissions. Next I cloned this to a 512gb SSD and put it into the Mini. Then - perhaps what caused a problem is that I went to the migration assistant and migrated all of the settings and programs from a Mac Pro Tower that the mini was replacing. After doing this, I did the geekbench and it came up with the dismal 6225.


So, I started all over again - installing 10.6.6. from the MBP and from the initial registration screen, I hooked up the Mac Pro and migrated all of the data from the get-go. I then updated to 10.6.8 and from the MBP, hooked up the Mini's Lion drive to copy the plist and permissions change. Put the SSD into the Mini and ran geekbench. Voila - I'm up to 8067. It's not as good as what newfoundglory got but good enough for me for the time being. If I start up the mini without extensions it goes up to 8935. Keep in mind this is done under 32bit.


So the lesson of the story goes - keep the installation with as little steps as possible. When I ran the Migration assistant after the install, something must have happened to change the speed. I did noticed that when doing the permissions change within Terminal, a quick message showed up saying that kext file that I modified was not original and it couldn't be used....

Dec 10, 2011 8:03 AM in response to newfoundglory

I've just posted an invitation to folks over at the Discussions thread on "reverting the new Macbook Pro, etc., to Snow Leopard" to look in on what you've accomplished here.


There are some good coders lurking over there, and also on some other related threads. Let's see if they can make some contributions to what you're developing. The more minds working on this, the sooner it gets sorted out.


If you combine our nearly 40,000 views (up to this point) here with the over 20,000 views on that thread and other related ones, we've drawn over 65,000 views on this topic. Apple really does pay some attention to what happens in these Community discussions -- and the more views on a topic, the more attention it eventually gets. That doesn't mean it produces any action at Apple, but its the best pathway I know to get a policy "adjusted," and sometimes it works!


That's why I'm still nudging everyone I know at Apple, trying to get someone to loosen their "previous OS on current hardware" policies a little bit in this one instance -- and to facilitate what we're doing. And, in particular, to at least allow Snow Leopard client virtualization on Lion machines.


Looking in on the virtualization code can give you some useful hints on what resources are missing and needed to run SnowLep on Lion machines, by the way....!!

Dec 11, 2011 3:39 PM in response to Steve Jolly

Downgrading a MBP is a bit different to a mac mini, because the MBP's originally shipped with a supported version of Snow Leopard!


Is anyone else having Bluetooth issues with SL and the 2011 mini?


If you have both SL and Lion installed on your Mac mini, can you check the RSSI (received signal strength indication) by option/alt-clicking on the bluetooth icon in the menu bar and navigating to the currently connected device (eg mouse/trackpad)?


Its strange... I get between -77dBm and -88dBm in Snow Leopard at close range (greatly improved by turning off Wifi), but a much improved -48dBm in Lion with Wifi switched on.


Does anyone else have symptoms similar to this? I am wondering if this has something to do with Bluetooth 4.0 in the 2011 Mac mini - If I download a file at high speed from the internet, it completely drowns the Bluetooth which screws up my magic mouse (jumps about) when in Snow Leopard, but in Lion its fine.....

Dec 12, 2011 4:50 PM in response to newfoundglory

Thanks, newfoundglory -- and I'm clear that MBP's shipped with Snow Leopard, which of course goes to the heart of our challenges on the Mini.


There are some good coders (I know of one example) who have a MacBook Pro and who've looked in on that Lion-to-SnowLep thread but have no reason to jump over to browse through our Mini-oriented discussion. Their System insights might contribute some new angle of looking at our problem, so I thought it was wise to invite 'em over here, if only for the challenge.


Some have responded and have drifted through here already; I've gotten a couple of emails from 'em. I guess we shall see if they generate something worth posting, or not!

Dec 13, 2011 8:43 AM in response to Steve Jolly

I've been looking at two things recently:


1 - Making a bootable DVD or image of Snow Leopard, which can be installed directly. I have had success making a 10.6.6 restore DVD bootable on any Mac, but there are quite a few issues to overcome (probably coming from the fact its a restore disk for a MBP - from what I can make out, the 10.6.8 update introduced support for Apple hardware which was never released with Snow Leopard). Specifically, if you look in System Profiler under Bluetooth - the Product ID of 0x8281 (in hex, which is 33409 in decimal) isn't introduced to the IOBluetooth.kext plists until 10.6.8 (I checked 10.6.7 to make sure) - to me, it looks like Apple did this specifically to provide support for Snow Leopard on the 2011 Mac mini (and presumably the 2011 Macbook Air) as i'm sure this identifies the Bluetooth 4.0 chip in both the MM and MBA.


Because 10.6.8 introduced so many kext updates (again, I looked), I doubt it would be possible to bring those back into a 10.6.6 or 10.6.7 restore DVD due to the dependencies involved. So, it wouldn't be perfect. I know someone with an iMac who has a 10.6.8 DVD so i'm going to check the kexts on that and see what it reveals.


2 - Bringing kexts from Lion, back into Snow Leopard. I had great success with this, actually! I managed to get the version 4 kexts for Bluetooth running from Lion (including the HID kext) working fine in Snow Leopard. But, it worked only with existing paired devices, and paired (but wouldn't work) with devices never seen before. I copied over the version 4 framework too (the system prefs/interfaces/UI), but that broke things completely!!

Dec 18, 2011 11:36 AM in response to newfoundglory

I am one who has successfully installed SL on a 2011 mini (optional 2.7 GHz i7) with no major problems (thanks, of course, to newfoundglory's discovery of missing files).


There is, however, one niggling issue with display resolution...


The mini and my 24" LCD monitor both support 1900x1080 resolution.


If I boot the mini using Lion, the default resolution is 1900x1080 and it is usable: smaller text (the ruler by which I gauge such things) is crisp and readable. No complaints.


If I boot the mini in SL, the default resolution is 1600x900 and is also usable: crisp text. No complaints.


Under SL, looking in Sys Prefs' Displays pane I see no resolution above 1600x900. But thanks to a neat little utility called screenresolution, I can select any resolution that the mini hardware supports (see http://hints.macworld.com/article.php?story=20110830215724984).


If I change the resolution to 1900x1080 (1900x1080x16 and 1900x1080x32 options are there; I tried both), the display shows the higher resolution but it is not usable: smaller text is not crisp and mostly unreadable.


Why would 1900x1080 be so good under Lion but not under SL?


Maybe there's a fix (hello newfoundglory!) for native resolution issues?


Otherwise I'm very happy speeding along with this combination of new mini & SL.


Cheers, iX

Dec 18, 2011 12:28 PM in response to iXod

Well my monitor is 1920x1080, and it works no problem. So, either you have done something wrong or there is something causing it to screw up.


Try the basics: reset the PRAM


Do you have another monitor you can try?


Are you connected via HDMI, or using HDMI to DVI adapter?


Does your mac think its connected to a TV?


Does you monitor have a display data channel (DDC) setting that you can disable through the monitors menu? (try rebooting mac mini after)

Dec 18, 2011 1:37 PM in response to newfoundglory

Yes I had DDC turned on in the monitor; off now. The monitor HDMI cable was connected to the Mini-DVI port via an Apple adapter; it's now HDMI all the way.


I reset PRAM several times after the above changes.


No Joy. My Sys Prefs' Displays pane looks identical to yours except for the absence of "1920x1080" entry.


"Does your mac think its connected to a TV?"


How do I tell if this is so?


No other monitor of 1920x1080 resolution that I can try.


FWIW: System Version: Mac OS X 10.6.8 (10K549)


Thanks, iX

Dec 22, 2011 1:59 PM in response to iXod

iX - i've seen this happen to Mac minis before, but I don't know the fix unfortunately - maybe try Google for this one and see what other people have experienced.


Also, for those who are using a 2010 mini to get a 10.6.8 image - I also get the second "ghost" display (which obviously doesn't exist). No idea what is causing this yet. Using a MBP definitely seems to work better for me.

Dec 22, 2011 6:01 PM in response to newfoundglory

newfoundglory: I'm wondering if the phantom display is caused by some configuration issue. I've already tried many alternatives, and I'd love to try an image you have created that has worked for you. I sent a friend request on the Macrumors forum, or please suggest another way to contact you.


I had installed the Mac Mini 2011 EFI 1.4 firmware update (wish I hadn't), perhaps it is a problem. The disc I'm using is:

"13-inch

MacBook Pro

Mac OS version 10.6.6

Disc version 1.0

2Z691-6796-A"


I'm using 10.6.8 update version 1.1, can't find a copy of the original 10.6.8 update.

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Can I install Snow Leopard on the new Mac Mini

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