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formatting external hard disks

2407 Views 3 Replies Latest reply: Jan 29, 2013 10:14 AM by ChiaraNRC RSS
stevefromzurich Calculating status...
Currently Being Moderated
Jan 3, 2012 8:23 AM

What is the best way to reformat an external hard drive from MS-DOS to MacOS?

My disk utility software (macOS 10.5.8) refuses to delete and reformat a new toshiba hd (STOR.E ALU 2,  1 TB).

iMac, Mac OS X (10.5.8)
  • Kappy Level 10 Level 10 (221,095 points)
    Currently Being Moderated
    Jan 3, 2012 8:26 AM (in response to stevefromzurich)

    Drive Preparation

     

    1. Open Disk Utility in your Utilities folder.

     

    2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Click on the Partition tab in the DU main window.

     

    3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Click on the Options button, set the partition scheme to GUID then click on the OK button. Set the format type to Mac OS Extended (Journaled.) Click on the Partition button and wait until the process has completed.

     

    4. Select the volume you just created (this is the sub-entry under the drive entry) from the left side list. Click on the Erase tab in the DU main window.

     

    5. Set the format type to Mac OS Extended (Journaled.) Click on the Security button, check the button for Zero Data and click on OK to return to the Erase window.

     

    6. Click on the Erase button. The format process can take up to several hours depending upon the drive size.

     

    Steps 4-6 are optional but should be used on a drive that has never been formatted before, if the format type is not Mac OS Extended, if the partition scheme has been changed, or if a different operating system (not OS X) has been installed on the drive.

  • ChiaraNRC Calculating status...
    Currently Being Moderated
    Jan 29, 2013 10:14 AM (in response to stevefromzurich)

    Thanx, it did work :-)

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