Hi, Rob,

Thanks very much for your reply.  I think I will go ahead and try to put Lion 
on the large empty partition and keep SL on Drive 1.  If it doesn't work, I 
will let the list know, and thus add to the knowledge base.  I think I can 
restore everything pre-Lion from backups if it doesn't work.

As to where Windows has to live, mine is on a partition on one of the other 
drives - not Drive 1, and works quite OK there.

Cheers!
Pat

On 23/01/2012, at 1:20 PM, RJDarts wrote:

> Morning,
> Mac Pro has 4 internal drives, OS X Boot disk irrelevant as too where 
> installation is placed in this collection.
> Windows drive or partition has to be Drive Bay 1?
> 
> My Regime for Mac Pro is:
> Drive 1 OS X and relevant Software, Users etc, This Drive is Cloned once 
> installation complete with Cloned drive removed to safe place. (Archived 
> Monthly)
> Drive 2 working Libraries, Imagery , Audio, regularly used stuff I require to 
> complete projects (cloned, archived weekly).
> Drive 3 being project I am working on as is Drive 4 normally being a mirrored 
> RAID of Drive 3.
> All Drives single partitions.
> 
> Once project complete I archive on and offsite or give client one of the 
> mirrors.
> 
> I have other drives with Window installations and Linux installations I drop 
> in and out accordingly using option key to select at boot, as I  Firmware 
> Protect machines.
> 
> Personally I removed my SL installed drive replacing with brand new one 
> installed Lion then required software.
> So if something does need SL I just drop in and away I go, as if machine 
> never touched.
> 
> Must mention I use OS X server for intranet email (imap), VPN, and file 
> servers, backup devices. Company eMail is externally controlled by Web Host 
> via IMAP.
> 
> Remember that Lion is a "Major Upgrade," as it removes all possibilities of 
> running Software that has not been converted to 64bit and Lionised. 
> 
> Hope helps?
> 
> Cheers
> `RobD...
> 
> On 22Jan2012, at 11:06 am, Pat wrote:
> 
>> I am cautiously dipping my toe into the Lion pond.  I installed Lion on the 
>> MacMini that minds the EyeTV.  Now I am thinking I would like to install it 
>> on the Mac Pro, but I want to keep the functioning Snow Leopard.
>> 
>> I have kept all WAMUG letters about installing Lion.  Most of them speak of 
>> installing it on an external disk.  The Mac Pro has 3 internal hard disks, 
>> the 2 secondary disks are partitioned for various purposes.  There is one 
>> totally empty 700 GB partition available.  My question is, is it safe (and 
>> possible) to install Lion there?  I have encountered other software that 
>> insisted it had to be installed on the primary disk, where SL currently 
>> resides.
>> 
>> Or would it be better to SuperDuper the SL into the empty partition and put 
>> Lion on Disk 1?
>> 
>> Another question:  I know that the same copy of Lion can be installed on 
>> more than one computer.  Is this the case now for other Apple software 
>> bought through the App Store?
>> 
>> Thanks,
>> Pat
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