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  1. #1
    Trying to clean install 10.6.3 over 10.7.3 not working
    A*k!m@n's Avatar
    Member Since
    Mar 07, 2012
    Posts
    5
    Trying to clean install 10.6.3 over 10.7.3 not working
    I had some software problems recently which I have a sneaky suspicion has something to do with QT frameworks which has caused my main 3D app to behave erratically. I have also lost my Library folder from my user directory and I cant install a lot of python related modules I feel all these problems are related. To remedy this I thought Id try installing 10.7.3 to see if it replaced any missing python modules or QT libraries that may have corrupted but it didnt work. All I want to do now is do a clean install from my boot disc which I believe is 10.6.3 but it wont let me choose my hard drive as a valid install drive saying it cannot start up on this disc. Yet I can cancel the install and start up from the HD. I believe it has something to do with the OS deciding for me that I shouldnt revert backwards to an earlier OS, is this the case? Are there any workarounds, this is quite frustrating.

    Thanks

  2. #2
    Trying to clean install 10.6.3 over 10.7.3 not working
    louishen's Avatar
    Member Since
    Oct 22, 2007
    Location
    London
    Posts
    8,968
    Specs:
    Mac Mini Core i7 2012 | White 2009 MacBook 2 Ghz | 733 Mhz G4 Quicksilver
    You need to boot from the optical disc, it cannot install over a running system

    Shut down with the disc in and restart pressing the C key, it should then boot from the DVD

    By the way, you haven't lost your library folder in 10.7, it's hidden. Alt click on the View menu and the option re-appears.
    Member of the Month September 2008 & August 2012 | Found advice useful? use the rep system

  3. #3
    Trying to clean install 10.6.3 over 10.7.3 not working
    dtravis7's Avatar
    Member Since
    Jan 04, 2005
    Location
    Modesto, Ca.
    Posts
    28,477
    Specs:
    iMac late 2007 10.11.b4, iMac 2008 10.10.5, Macbook2007 10.7.5, Mac Mini 10.7.5, iPhone 3GS Note 8!!
    To see the User Library that you feel is missing, in Finder, click the GO drop down while holding down option and it will show up. Apple hid that library from general view due to many messing around in there and ruining their OS install.

    If you are booting from the 10.6.3 DVD, you can't upgrade a newer OSX with an older one. I think that is your issue. I would in 10.7 run a full Time Machine backup to an external drive, then erase the drive in Disk Utility once in the 10.6.3 installer. Once you have it all installed migrate the files back using Migration Assistant from your Time Machine Backup.

  4. #4
    Trying to clean install 10.6.3 over 10.7.3 not working
    A*k!m@n's Avatar
    Member Since
    Mar 07, 2012
    Posts
    5
    Okay Il try the backup and erase technique as I as booting from disc originally. As for the hidden Library folder I wouldve thought the preferences folder was enough to make it a legitimate for users to rummage through? Oh well Apple doing the thinking for us again.

    Thanks for your help.

  5. #5
    Trying to clean install 10.6.3 over 10.7.3 not working
    Germany_chris's Avatar
    Member Since
    Oct 31, 2011
    Posts
    283
    If you want to go back to Snow Leopard from a Lion install you have to delete the recovery partition. That partition is whats telling you you cannot install, remember Apple does not like folks going backwards.

    I have always done it this way Clone the boot drive and put it in the closet so it's always available for emergencies. Boot from install media secure erase the HDD (write zeros) go to bed. Wake up the next day start the install process go to work. Go home at lunch complete the install process. If I don't feel like installing my applications again from scratch (rare, as I keep the DMG's) I use my cloned HDD to put back just the applications (provided the short name is the same). Come home from work to a fresh Mac with the OS I want.
    Mac Pro 4,1 (Flashed to 5,1) W3570 3.2 Quad..48GB RAM..Gainward GTX 570 "Phantom."
    MacBook Pro 5,2..2.8Ghz C2D..8GB RAM..240GB Vertex +

  6. #6
    Trying to clean install 10.6.3 over 10.7.3 not working
    A*k!m@n's Avatar
    Member Since
    Mar 07, 2012
    Posts
    5
    Thanks, thats very clear explanation . I think I will install my apps again, that was something that was bothering me.

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