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Is running a 2 operating systems a good idea?

134 Views 3 Replies Latest reply: Mar 19, 2013 5:37 PM by Linc Davis RSS
Helinlouise Level 1 Level 1 (0 points)
Currently Being Moderated
Mar 19, 2013 11:30 AM

Hi,

 

Could I please have some advice from the community?

 

I have just installed an SSD drive in my Macbook Pro so have the original HD with the operating system and data on and my new SSD with just the operating system on.

 

My intention is to boot to the SSD but save all documents etc. to the original HD.  However, when I try and point my home drive to the original HD it tells me that there is a permissions problem.

 

When I went into the Apple shop for help they told me that the problem is that I have 2 operating systems on the Mac and that I need to remove the OP system from the original HD and just leave the data there.

 

Is this correct?  When I look on the internet, plenty of people have 2 operating systems on their Mac?  How do they get around the permissions access when trying to do what I am i.e. boot to SSD and use HD for data?

 

Thanks in advance for any help.

 

Helen

MacBook Pro, Mac OS X (10.7.5)
  • ds store Level 7 Level 7 (30,305 points)
    Currently Being Moderated
    Mar 19, 2013 12:02 PM (in response to Helinlouise)

    The hard drive needs to go into the optical bay and the SSD into the original location.

     

    You need to maintain one complete user account (with all the folders) on the SSD, however you have the user data on the hard drive instead in new folders.

     

     

    1: make the hardware switch, boot the ssd and set it as the startup disk

     

    2: fix and or create a new user account so it's blank but contains properly linked user folders

     

    3: delete any unwanted user accounts, use the Shared and Public > Dropbox folder via the root directory to exchange files between accounts (also changes permissions)

     

    4: move data on the extenral hard drive to the external hard drive

     

    5: erase internal optical bay hard drive, format guid OS X ext j, parittion now if you wish

     

    6: copy data in portions to the SSD into the User > Public > Dropbox folder from the external drive

     

    7: copy data in portions from the SSD Dropbox folder to the internal drive into new same named folders (ie Music2, Documents2, Pictures2)

     

    8: in your Finder, hold commnad drag the existing Documents, Music etc, off and put aliases of Documenets2, Music2, Pictures2) there.

     

    You'll have to work round the assnine lack of Save As.. and likely once in awhile move stuff off the SSD to the hard drive folders

  • ds store Level 7 Level 7 (30,305 points)
    Currently Being Moderated
    Mar 19, 2013 12:08 PM (in response to Helinlouise)

    Helinlouise wrote:


    When I look on the internet, plenty of people have 2 operating systems on their Mac?  How do they get around the permissions access when trying to do what I am i.e. boot to SSD and use HD for data

     

     

    Because the files have different permissions and as long as you installed OS X, even using the same name, the files have different permissions associated with them.

     

    If you cloned the hd to the ssd, (Carbon Copy Cloner) then the permissions (owner and group) would be the same on both. But the SSD likely is smaller thus you had to install OS X.

     

    But because you installed OS X on the SSD, it's different and you can't share files easily without changing them.

  • Linc Davis Level 10 Level 10 (107,660 points)
    Currently Being Moderated
    Mar 19, 2013 5:37 PM (in response to Helinlouise)

    Is this correct?

     

    In a way, yes. You can't use the same home folder with two different major OS versions. Some of the file formats will be different, and when you migrate your data to the newer system, the old system will no longer be able to read it. That applies to Mail data, among other things.

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