Hi Robert, Just to add to what Ronda has said and to give you some other options. Assuming you are migrating towards Lion on your iMac, you have a number of options to run 10.6 Snow Leopard in an auxiliary role.
Here is a setup that I recently put in place for someone with an iMac. A large internal partition of the hard drive runs OS X 10.7 Lion and this partition also contains all the data files, while a much smaller internal partition contains OS X 10.6 Snow Leopard. Snow Leopard can see all the data files available to Lion. To boot into Snow Leopard, one just restarts the computer while holding down the Option key and one sees a selection menu to choose either operating system. By default the computer boots into OS X 10.7 Lion. To get this setup proceed as follows. I will give just a thumbnail sketch of the steps below, but if you want to proceed and can't follow the abbreviated steps, please write back to the group. 1) Make a clone of your system to an external drive using Carbon Copy Cloner or equivalent, just to give you an exit strategy should something go wrong. 2) Use Disk Utility to make a new small partition on your internal drive, 50 - 150 GB should be ample. Use the default Mac OS Extended (journaled) format. 3) Run the Lion upgrade application to move your main system to OS X 10.7 Lion. 4) Install a new copy of Snow Leopard on the small partition and install the software you would like to run under Snow Leopard there. Now you can will boot into Lion by default but can boot into Snow Leopard by holding down the Option key. You can run Freehand and Photoshop CS2 by booting into Snow Leopard. There are a number of variations to the above. One is to put Snow Leopard on an external drive. If this is bootable (as described by Ronni below) you can boot into it by holding down the option key. Another variation is to use copy your original bootable Snow Leopard install back to the the small partition -- this, however, will likely require you to make your Snow Leopard install much smaller by deleting redundant files. Remember that while you may not be able run certain applications on both systems, all the data files of each operating system are visible to both operating systems, so there is not need to maintain two copies of your data files. One small complication is that you need to stop Spotlight from indexing both operating system application files. That is to say, if you use Spotlight to launch, say, Disk Utility (as I do), you don't want the Lion version showing up in Snow Leopard, and the Snow Leopard version showing up in Lion. This is solved by excluding the Snow Leopard Application file from within the Spotlight preferences on Lion, and excluding the Lion Application folder from within the Spotlight preferences on Snow Leopard. Cheers, Carlo On 2011-08-04, at 10:26, Ronda Brown wrote: > > > On 04/08/2011, at 9:55 AM, Robert Miller-Eves wrote: > >> >> I need to continue using Macromedia Freehand MX and Photoshop CS2 in my work >> as I'm familiar with them but aware that OS Lion does not support them. >> Is it possible to run 10.6.8 from an external Drive (and use Lion on My >> computer Drive (iMac 27")? If so how does one select which OS to start up >> with? >> I have a fairly reasonable clue about this issue but would appreciate some >> Expert advice >> Thanks in advance! > > Hi Robert, > > I would suggest a better way is to do what I have done. I cloned my OS X > 10.6.8 system using Super Duper (you can use Carbon Copy Cloner if you > prefer) onto a bootable External FW Drive. Then purchased Lion OS X 10.7 from > the App Store and installed Lion on an external FW Drive. > > This way I can boot into Lion for testing purposes before I decide if I want > it on my main work MacBook Pro. > By doing this, my work MBP is not being disturbed by any ‘glitches’ that I > might find using Lion. > > You can use a USB External; Drive if you wish, I just prefer using FW drives > (of which I have many ;-) > Very important: You first must format the external drive in ‘GUID Partition > Table’ & Format: Mac OS Extended (journaled) otherwise you will not be able > to boot from the drive. > (If you require details how to format an external drive, please post back & > I’ll include instructions. > > Then when I find some time to do some testing of Lion I just: > Connect the FW Drive to MBP > Go to System Preferences > Startup Disk (Under System) > Click ’Startup Disk’ (it will now show both your OS X 10.6.8 HD & your OS X > 10.7 HD > Select the OS X 10.7 HD > Click ‘Resart’ > > Your computer will restart into Lion. When you have finished testing Lion > out, just restart back into OS X 10.6.8 > > Cheers, > Ronni > > 17" MacBook Pro 2.3GHz Quad-Core i7 “Thunderbolt" > 2.3GHz / 8GB / 750GB @ 7200rpm HD > > OS X 10.6.8 Snow Leopard > OS X 10.7 Lion > Windows 7 Ultimate (under sufferance) > > > > > > > > > > > > > > > > > > -- The WA Macintosh User Group Mailing List -- > Archives - <http://www.wamug.org.au/mailinglist/archives.shtml> > Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml> > Unsubscribe - <mailto:wamug-unsubscr...@wamug.org.au> > -- The WA Macintosh User Group Mailing List -- Archives - <http://www.wamug.org.au/mailinglist/archives.shtml> Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml> Unsubscribe - <mailto:wamug-unsubscr...@wamug.org.au>
