Partition Sizes, OSX and Apps Folder and how they work together

Discussion in 'Mac Basics and Help' started by hogmog, Dec 13, 2007.

  1. hogmog macrumors member

    Joined:
    Oct 30, 2006
    Location:
    Thames Valley, UK
    #1
    Having got my fingers severely burnt with the upgrade from Tiger to Leopard (posted elsewhere), I have decided to be a bit more scientific in preparing my machine for the downgrade to Tiger. As a Windows user for many many years (and still do on desktop comp) I have a good grounding of how to set one up to minimise issues when it comes to reinstalling the O/S. My knowledge in this area with the Mac though is nil. The Mac is a PB G4 1.67 with 80 Gb HDD. Therefore I have a few questions as follows:

    1) If I partition the HDD into two, one partition containing the O/S and the other data, can I install/uninstall the O/S at will with no effect on the data partition?

    2) Assuming 1) is OK, what would be the recommended partition size for a) Tiger and b) Leopard (I am presuming I will be able to go back to Leopard one day!)?

    3) I may take the opportunity during the downgrade process to perform open HDD surgery and replace existing 80 Gb one with a 160 Gb one. Would the recommended partition sizes in 2) change?

    4) Am I correct in assuming that you can reformat one partition without affecting the other?

    5) Providing there is enough free space on the HDD is it possible to increase/reduce partition size on the fly and if so can that be done through the O/S or do I need some specialist application? (I think this is kind of answered in this thread:

    http://forums.macrumors.com/showthread.php?t=393400&highlight=partition+size

    but any other thoughts?)

    6) Does the Applications folder need to be in the same partition as the O/S?

    7) In Windows, applications are tied to the Registry but no such encumbrance exists in the Mac O/S. If answer to 6) is that the O/S and Apps have to exist in same partition is it possible to back up the Applications folder (inc contents), reformat the partition, (re)install the O/S, then copy Applications folder, and then start running applications, or do applications have to be individually reinstalled?

    Many thanks in advance for any answers to the above questions.
     
  2. IMcD23 macrumors regular

    IMcD23

    Joined:
    Aug 4, 2007
    Location:
    Iowa, United States, Earth, Milky Way, . . .
    #2
    Having got my fingers severely burnt with the upgrade from Tiger to Leopard (posted elsewhere), I have decided to be a bit more scientific in preparing my machine for the downgrade to Tiger. As a Windows user for many many years (and still do on desktop comp) I have a good grounding of how to set one up to minimise issues when it comes to reinstalling the O/S. My knowledge in this area with the Mac though is nil. The Mac is a PB G4 1.67 with 80 Gb HDD. Therefore I have a few questions as follows:

    1) If I partition the HDD into two, one partition containing the O/S and the other data, can I install/uninstall the O/S at will with no effect on the data partition?
    yes

    2) Assuming 1) is OK, what would be the recommended partition size for a) Tiger and b) Leopard (I am presuming I will be able to go back to Leopard one day!)? a) 20GB b) 20GB

    3) I may take the opportunity during the downgrade process to perform open HDD surgery and replace existing 80 Gb one with a 160 Gb one. Would the recommended partition sizes in 2) change? yes a) 40GB b)40GB

    4) Am I correct in assuming that you can reformat one partition without affecting the other? yes with some software

    5) Providing there is enough free space on the HDD is it possible to increase/reduce partition size on the fly and if so can that be done through the O/S or do I need some specialist application? (I think this is kind of answered in this thread:

    http://forums.macrumors.com/showthread.php?t=393400&highlight=partition+size

    but any other thoughts?)
    have not tried leopard's disk util, but ipartition is great

    6) Does the Applications folder need to be in the same partition as the O/S? pretty much yes, because some put files elsewhere on the system

    7) In Windows, applications are tied to the Registry but no such encumbrance exists in the Mac O/S. If answer to 6) is that the O/S and Apps have to exist in same partition is it possible to back up the Applications folder (inc contents), reformat the partition, (re)install the O/S, then copy Applications folder, and then start running applications, or do applications have to be individually reinstalled?
    yes, but some registration data may be lost
     

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