10 Replies Latest reply: Dec 25, 2009 8:42 PM by Jack E. Tilley
Neil Paisnel Level 1 Level 1 (30 points)
How can I get rid of Snow Leopard and go back to Leopard?
Can I just install Leopard over the top or will it have to be a clean install to a blank HDD?

Mac Pro 2 x Quad Core 3.0Ghz 10Gb RAM 4 x 1Tb HD's, Mac OS X (10.6.1), FreeNAS servers and Other Windoze and Linux machines
  • Barry Hemphill Level 8 Level 8 (36,915 points)
    Hello Neil:

    How can I get rid of Snow Leopard and go back to Leopard?


    It depends....

    If you have a backup (everyone should backup before software changes), restore it.

    If you do not, I would try (I have not done so myself) an archive and install from your OS X 10.5 DVD.

    Barry
  • donv (The Ghost) Level 5 Level 5 (4,600 points)
    I think your best bet is make a bootable clone of your internal on an external drive (your backup and fail-safe mechanism). Then, do an erase and install on your internal using your Leo install DVD. Next, restore your apps and data from the Sno clone. Alternative, drag and drop you files, reinstall you software by hand, and redo your settings and users. If your prior install is not good, then I recommend that you not restore from the clone.
  • Neil Paisnel Level 1 Level 1 (30 points)
    OK thanks

    I did have a backups, going back three months with Time Machine, on a 1TB internal drive, but soon after installing SL, the Trash can stopped emptying properly, so each backup ended up being over 500gb.

    Luckily I do have 4 HDD's in this machine (Boot drive, User home folder drive, Data/Scratch disk and Time machine.
    So I imagine I could copy all my Scratch Disk data on to the User HDD, and try an insatll on the now empty Data Scratch disk drive.

    Would that work? It would mean effectively having two OS's installed on separate drives. If it all works I can then erase the Old Machinstosh HD and make the new install the permanent boot drive..wold that be possible ? would it work, I mean can you permanently change which drive the machine boots off as you could in the BIOS of PC?
  • Barry Hemphill Level 8 Level 8 (36,915 points)
    Hi Neil:

    My answer is I do not know. I do not guess and potentially create problems for people.

    Barry
  • donv (The Ghost) Level 5 Level 5 (4,600 points)
    Yes, what you want to do will work fine. And, you are saying that your want to end up with a Leo install (your main boot) and your old Sno intall. You will be doing exactly what I was saying except that your will be using two internal drives. And, you don't need to do anything to change the main boot except select your preferred drive in System Preferences > Startup Disk.
  • R C-R Level 6 Level 6 (16,695 points)
    Neil Paisnel wrote:
    I did have a backups, going back three months with Time Machine, on a 1TB internal drive, but soon after installing SL, the Trash can stopped emptying properly, so each backup ended up being over 500gb.


    Could you explain more about this? What do you mean by the trash can not emptying "properly"? Where were you seeing Time Machine report that each backup was 500 GB? If you were just looking at the size of the dated Time Machine backup folders via Finder or Terminal, you were not seeing an accurate indication of backup size: while it appears that each dated backup contains a copy of every file relevant to that date, there is actually only one version of each unique file on the Time Machine drive.

    Luckily I do have 4 HDD's in this machine (Boot drive, User home folder drive, Data/Scratch disk and Time machine.


    How specifically have you moved & linked your user home folder to a non-startup drive? This may be part of your problem.
  • Neil Paisnel Level 1 Level 1 (30 points)
    Ok, Thanks Barry, My data is safe so that is ok, I use a Scheduled Chronosync every night to a NAS box in the attic. So anything else although a lot of work agro, will not be a data loss issue.

    Thanks donv. I had seen the Startup disk option in Sys Prefs, but was not sure if it was a 'once only' change or was a permanent Startup disk selection.



    RC-R....I' did not elaborate further as it was not strictly related to what i was asking, but here are the answers/reasons.

    R C-R wrote:


    Could you explain more about this? What do you mean by the trash can not emptying "properly"?


    What I mean is that although the trash icon showed empty and with Hidden files and folders set to 'Show' in Finder, nothing appeared in the Trash Can or in the .trashes folder in Finder. BUT JDiskReport showed the trash can as having something like 300GB that could not be deleted. ( a duplicate iTunes folder i created before doing some major pruning of music stored in iTunes) Even using ls with various options from the Terminal failed to show the stuck folder in the Trash. See my post about this that no one could help me with:
    http://discussions.apple.com/thread.jspa?threadID=2190196&tstart=0

    Where were you seeing Time Machine report that each backup was 500 GB? If you were just looking at the size of the dated >Time Machine backup folders via Finder or Terminal, you were not seeing an accurate indication of backup size: while it >appears that each dated backup contains a copy of every file relevant to that date, there is actually only one version of each >unique file on the Time Machine drive.


    What I was seeing was Time machine reporting not being able to complete another backup, as there was not enough space left on the drive. I clicked on the TM icon in the dock, and saw that instead of having backups going back many months, I only had one backup from the previous hour. If I looked at the TM drive in Finder, it showed just the one dated backup subfolder within the backup.backupdb folder and that was over 700GB

    I understand how TM does its backups using 'hardlinks' . I use a similar system on my FreeNAS backup box using a script and rsync to create a rotating 'snapshot' style backup up of the old Dell PC. So yes , if you looked at the size of each individual backup and added them all together, then you would have backups totalling a figure much greater than would be possible to fit on the drive


    For the first few months Time Machine was fine until the drive started getting full and every hour or so when TM did a backup it was asking me about deleting older backups. So I turned off the 'Notify after old backups are deleted' option.
    Each individual backup had got so big with the stuck folder in .Trashes that all previous backups had been deleted.

    Now, I thought .trashes folders were automatically excluded from TM backups, but it seems in this case that they were somehow being included, and the deleted iTunes library folder was somehow stuck in there and being backed up.



    How specifically have you moved & linked your user home folder to a non-startup drive? This may be part of your problem.



    I will start from the beginning.
    When I first got the machine I had 4 HDD's ( set up as Boot 500gb, Video Scratch1Tb, Video import1TB and Time machine1TB).
    With the way iPhoto/iTunes etc imports data into their own packages (OK I know that can be stopped and use linked libraries) my Users folders on the boot drive started to outgrow the drive. I use ALAC (lossless format ) for my music, and have a lot 20,00+ photos. A 500 Gb drive with about 350-400 gb user data plus system.

    So I copied the User folders to one of the bigger drives. Then linked to it using Sys Preferences, CMD Click User/Advanced options/Home Directory/Choose.
    On any Ubuntu machines I have setup, putting the home folder on a separate drive has not caused me problems, so I possibly naively assumed this would also be the case on here also. On Windows machine I alway sset up the My Documents folders on a independent drive, but then the My Docs folder does no contain "system' data in the same way that a users home folder does, so that is a lot less troublesome.
    Am thinking of upgrading the drives in this box soon, just waiting on the prices of the 2TB WD Caviar Blacks to drop a bit. I can then move the 3 1TB drives out of this machine into my FreeNAS backup box.

    I think I have covered all your points there, any suggestions appreciated

    Neil
  • Jack E. Tilley Level 1 Level 1 (5 points)
    I would like to echo Neil's query.. I have noticed many slowdowns since I went to Snow Leopard! Is there a simple way (for a 75 year old) to de-install SL? BTW, Firefox takes 35 seconds to boot, Entourage takes 5-10 seconds longer to open and close, etc.

    Thanks Jack
  • R C-R Level 6 Level 6 (16,695 points)
    Jack E. Tilley wrote:
    Is there a simple way (for a 75 year old) to de-install SL?


    Snow Leopard is an +operating system+ ("OS" for short), the fundamental software that runs the machine. Thus, you can't simply uninstall it if you want the machine to function; you have to replace it with another OS, such as Leopard.

    BTW, you should strongly consider starting your own topic rather than adding to one that has been inactive for months & marked "answered." More users will see your post & be encouraged to answer any specific questions you have.
  • Jack E. Tilley Level 1 Level 1 (5 points)
    I would have posted a new topic BUT... I couldn't seem to find where & how!! Thanks for the reply....

    Now I see the "new topic" area.... Sorry 'bout that!

    Message was edited by: Jack E. Tilley