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Data retention when removing/resizing partitions

331 Views 8 Replies Latest reply: Jan 6, 2013 12:39 PM by snowshed RSS
snowshed Level 1 Level 1 (0 points)
Currently Being Moderated
Jan 4, 2013 12:48 PM

My internal drive is currently partitioned into 3 partitions.  I'll call them A, B, and C simply for the sake of this discussion.


A is the System drive I boot from, and the first partiton on the drive.


B is the Data drive, where I store all my data, and is the middle partition.  I am not a believer in having my data on a System drive, in any OS.


C is the Testing drive, the third partition, where a 2nd copy of Snow Leopard is installed.  This partition is used only for trying out new programs before installing the programs on A/System drive.


I want to repartition the drive using Disk Utility, following these steps:

  1. Delete the current C partition that is located at the end of the drive.
  2. Extend B partition, the middle partition, to the end of the drive.


Will Snow Leopard leave the data on B in place and untouched, or will it be deleted by the partitioning steps?  The data should be backed up using Time Machine to a 2 TB external drive.  However, the drive is full, and older backups are being periodically purged.  My knowledge of Time Machine is limited, never really got into any of the details.  So, I'm not sure some of the long standing but never accessed data will be in the current TM backups.


I'm certainly open to any suggestions.  Retaing the data on B is the primary issue.  Actually doing the partitioning isn't an issue, just data retention.



iMac (24-inch Early 2009), Mac OS X (10.6.8), 8 GB RAM, 1 TB hard drive
  • Klaus1 Level 8 Level 8 (43,395 points)
    Currently Being Moderated
    Jan 4, 2013 3:02 PM (in response to snowshed)

    Partitioning a hard drive:



    To resize (or delete) an existing partition without losing data, you will need to use, for example, iPartition:


  • WZZZ Level 6 Level 6 (11,880 points)
    Currently Being Moderated
    Jan 4, 2013 3:11 PM (in response to snowshed)
  • WZZZ Level 6 Level 6 (11,880 points)
    Currently Being Moderated
    Jan 6, 2013 7:35 AM (in response to snowshed)

    If you have a bootable clone, you can always test the new partitioning first booted from the clone. Or, do a new backup and then see what happens on the internal. If it doen't work out, just boot from the clone and do a reverse back to the internal. That way, no need to buy this expensive program, that is, provided you have a known good bootable clone.

  • WZZZ Level 6 Level 6 (11,880 points)
    Currently Being Moderated
    Jan 6, 2013 8:58 AM (in response to snowshed)

    Do you want to start a separate topic on the Finder problem? I don't use TM, but if you trust your backups there, you should be OK to restore from before the partitioning, if necessary.


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