Results 1 to 3 of 3
  1. #1

    Member Since
    Apr 08, 2012
    Cannot format external harddrive
    I have a Seagate 1.5 TB external. I can no longer read data from it. I want to erase all data and reformat.

    Conventional Efforts:
    When I plug it in to my MBP (via Firewire 800), it shows up on the desktop as mounted. However, when I try to access the files on it via Finder, Finder crashes (beachball). I open disk utility, and I can see the disk. When I press erase, the dialog is stuck at "Unmounting Disk".

    Why does this happen?

  2. #2

    louishen's Avatar
    Member Since
    Oct 22, 2007
    Mac Mini Core i7 2012 | White 2009 MacBook 2 Ghz | 733 Mhz G4 Quicksilver
    Sounds like the disk has gone south

    But first try a disk repair in Disk Utility
    Member of the Month September 2008 & August 2012 | Found advice useful? use the rep system

  3. #3

    Member Since
    Apr 08, 2012
    Ya, I figured as much. Any operation in DiskUtility leads it to hang. I "fixed" everything by erasing the disk through diskutil then repartitioning it.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. External Harddrive Format problem on Macbook
    By riellysmith in forum Apple Notebooks
    Replies: 1
    Last Post: 05-15-2012, 05:53 AM
  2. Restore External harddrive accidental format/Test Disk-Write access is not available
    By ademidio453 in forum Other Hardware and Peripherals
    Replies: 3
    Last Post: 02-15-2012, 12:52 AM
  3. New Harddrive need format?
    By north_guy in forum Apple Notebooks
    Replies: 5
    Last Post: 04-08-2011, 11:42 PM
  4. Format External Harddrive
    By Kitohru in forum Switcher Hangout
    Replies: 2
    Last Post: 11-01-2006, 04:12 PM
  5. Replies: 1
    Last Post: 12-15-2003, 12:41 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts