Snowleopard + Yosemite

So I need to have Snowleopard because of photoshop more old but really because I'm under Revit on parallels but Warrior drive continues to make my mac run better.  My Diskwarrior disk is damaged now so I decided to install Yosemite on a 100 GB partition I have set it up as a secondary start System.  All went well last nite and I was able to get to Yosemite Diskwarrior and then run it to fix my directory on the partition of Snowleopard.  Everything is good.  Then and a bunch of revit worked on jobs... then wanted to go to Yosemite.  Open Prefs / boot disk and no Yosemite showed!  Help! . . .

I'll do the big cleansinski soon enough as I upgraded it to revit more recent (autodesk now "rents"!).  Plan is to return all re - create 2 partitions this time 700/300 gig out of my 1000 that will allow me to install bootcamp, if I understand although parallels is slower to run windows 8 / revit.  It is a case of huuuuuuuuuuuugggge as says the proverb goes these days.  So I have to it's the date of expiry of my ultimate office until February 18 building.  So, how do Yosemite and Snow Leopard to co-exist?

Mahalo for all thoughts.

RO

Try to restart with the option/alt key is pressed. Yosemite will not be displayed in Snow Leopard System Preferences/Startup Disk.

Tags: Mac OS & System Software

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