Q: Hi, Can I install snow leopard on a partition alongside lion?

Yes.  You can go into Disk Utility and create a new partition and then install Snow Leopard to this new partition.

Hope this helps

I have a question, when my macbook is loading the snow leopard partition, it just freezes, I can only see  grey apple without the signal that is loading the snow leopard "I mean the circle below the apple" and it take a long time but never start, I Have de 10.7.3 lion version and I started the snow leopard form other computer with the firewire cable and it works, what can I do please I need help!

Yes, it can be done.  My system is set up with dual, bootable, partitions. One is for 10.6 Snow Leopard, and the other is for 10.7 Lion. I use Lion almost all the time, however, if there's a PowerPC program I need to access, I can boot to the Snow Leopard partition and use it there.

How do you do that? the version of my snow leopard is 10.6.8, Look what happen,it's weird the fact of in older macbook pro with lion it works, but the lastest macbook pro(no retina display) it doesn't work, the computer I used to install SL is an older one, and it works perfectly but in mine not, when my macbook is loading the snow leopard partition, it just freezes, I can only see  grey apple without the signal that is loading the snow leopard , I need it to run Pro tools 9 I don't know what to do, I will apreciate your help, thanks.

You cannot run an OSX version earlier than what your Mac shipped with without using something like Parallels where it becomes an emulated or virtual OS not running Natively as the Operating System.

And how can I do that? Do I need an extra softwareor something? please help, I really need to run snow leopard in my mac, thanks again.

The only time you can run an OS older than what the Mac came with is if you have a Mac that was produced right around the time the newer OS was introduced - so you would have to check with Apple on your specific build number. Having said that, I believe I read that early/mid 2011 iMacs could still run Snow Leopard - since it has now been almost  a year and a half since Lion was introduced, I don't know if any newer released Macs could still run SL.

If you want to spend the $20 on it, purchase a retail copy of SL and see if you can install it on an external drive - if that is successful and you can actually boot from it, then great. If not, you'd be out $20 and the time you spent on it.

****! and do you know the reason of that? Yes, my macbook pro is from 2012 it could be, can you show me the site you read it?  thank you so much!

From more like this:

https://discussions.apple.com/message/17211555#17211555

Do I know the reason for what? If you mean running an earlier OS on a Mac - it has never been possible except for the machines that were manufactured right around the time the new OS was introduced (because they still had the old hardware/firmware before it was changed). I read about the early 2011 iMacs in one of the threads here - I could not find it right now.

How old is your Mac? As I said, you need to figure out the build number of your machine and talk to Apple to see if that build supports SL. Here are some build numbers:

http://support.apple.com/kb/HT1633

Here is one of many earlier threads:

https://discussions.apple.com/message/18304136#18304136

I suggest you do a search here for "run snow leopard on lion" - there have been countless threads, some with very good information.

Caantrigo, please open a new thread on your issue, as you're hijacking OPs thread.

finalsolution wrote:

 

Hi, as lion no longer supports .sit files, many of which i have and need, can I install snow leopard on a partition alongside lion? On to that, does anyone have a fix for the .sit files by any chance? :-)

If the OP is still following this thread:

.sit files can be UnStuffed with Stuffit Expander, which is listed as working with Lion and presumably will work with Mountain Lion:

http://www.stuffit.com/mac-expander.html

Presumably you are working with an older version of Stuffit Expander which requires Rosetta, which is no longer included with Mountain Lion.

Another article that describes your situation in more detail is:

http://www.cultofmac.com/192682/open-sit-files-in-mountain-lion-for-free-os-x-ti ps/

babowa wrote:

How old is your Mac? As I said, you need to figure out the build number of your machine and talk to Apple to see if that build supports SL. Here are some build numbers:

 

http://support.apple.com/kb/HT1633

FYI, this is better since it maps machines to builds:

http://support.apple.com/kb/HT1159

As usual, you are correct....