Skip navigation
This discussion is archived

Formatting WD MyBook 1 Terabyte External Hard Drives

38675 Views 8 Replies Latest reply: Dec 11, 2007 11:15 PM by enjayjay RSS
Lita Kaufman Level 5 Level 5 (5,315 points)
Currently Being Moderated
Nov 16, 2007 6:17 PM
I recently purchased two WD MyBook Personal Edition 1 TB hard drives. These come formatted as MS-DOS FAT32, which is pretty useless for a Mac-only system. They are connected to my Mac Pro via a FW400 daisy chain.

When I went to format these drives with Disk Utility, I wanted each to have a single partition, formatted as HFS+ (Mac OS Journaled). Each time I tried to format, I got an error that the disk could not be formatted due to a file system error. However, I have no problem formatting these drives into two or more partitions using the preferred file system. If I want to have a single large partition, the only way I can have that is if I format the drives as FAT32.

Is this a problem with Mac OS - that it won't accept HFS or HFS+ partitions over a certain size? This doesn't see right, since I can buy Mac formatted LaCie drives with the right file systems.
2.66 ghz Mac Pro/30" CD & 23" CD/12" G4 iBook/15" G4 PowerBook/80 gb, 60 gb, 30, Mac OS X (10.5.1), The spotted cat purrs ...
  • Firesign3000 Calculating status...
    In Disk Utility, you should see two icons for your disc. The upoper one is the device, the lower one is the volume. Use the upper one. You should be able to make it all one big partition. That's what iI did with my 1 TB external.
    17" Macbook Pro 2.33, 15" G4 1.5 Powerbook, G4 700 iMac, G3 iBook
  • MacDude68 Calculating status...
    Hi Lita,

    I have a 1TB My Book drive too, and ran into the same problem initially. In order for the partitioning to work, you have to select the appropriate partition scheme in Disk Utility. You probably have the Master Boot Record scheme selected (its the default)...you'll want to choose either the GUID partition scheme or the Apple Partition Map scheme. Which one you choose depends on whether you want to be able to boot the disk with an Intel Mac (GUID) or a PowerPC (Apple Partition Map). Disk Utility help will give you some more details.

    Hope that helps.
    Black Macbook, Mac OS X (10.5.1), 2Gb ram, 120Gb HD, VMWare Fusion w/XP, 4G iPod
  • baltwo Level 9 Level 9 (59,180 points)
    *Which one you choose depends on whether you want to be able to boot the disk with an Intel Mac (GUID) or a PowerPC (Apple Partition Map). Disk Utility help will give you some more details.*

    Clarification. Both machine types will boot from a disk using the APM. However, you need GUID to run the installer from an ICBM (Intel-chip-based Mac) and install onto the disk.
    G4 450 MP Gigabit 1.5 GB RAM/17" Flat-panel 1GHz iMac, Mac OS X (10.5), 10.5.1 (also 10.4.11/9.2.2)
  • lethal Level 2 Level 2 (435 points)
    Currently Being Moderated
    Nov 16, 2007 7:10 PM (in response to baltwo)
    Just a note for people who have NOT bought their drives yet.

    You can buy the WD MyBook drives preformatted as Mac drives - I got all 3 of mine from the local Apple store - all 3 preformatted properly. Same price as a DOS-formatted one.
    Macbook Pro 2.4Ghz IC2D, 2GB Ram, 500GB MyBook USB Drive, Mac OS X (10.5), Video iPod 30GB; Mac-Mini IC2D, 2GB RAM
  • baltwo Level 9 Level 9 (59,180 points)
    Currently Being Moderated
    Nov 16, 2007 7:31 PM (in response to lethal)
    One caution. I moderate the Bombich forums, home of Carbon Copy Cloner and NetRestore, and we've received reports of problems cloning with the WD MyBooks caused by its automatic spin-down (auto-sleep) feature. WD is unable to offer a way to turn it off. The only answer for others has been to purchase an uncrippled FW drive. (LaCie drives, for instance, have optional auto-sleep at a flick of a switch on the casing).
    G4 450 MP Gigabit 1.5 GB RAM/17" Flat-panel 1GHz iMac, Mac OS X (10.5.1), (also 10.4.11/9.2.2)
  • baltwo Level 9 Level 9 (59,180 points)
    Thanks for the feedback. Good computing.
    G4 450 MP Gigabit 1.5 GB RAM/17" Flat-panel 1GHz iMac, Mac OS X (10.5.1), 10.5.1 (also 10.4.11/9.2.2)
  • enjayjay Calculating status...
    Your solution works - I had the same problem and searched. Format via the partition section, 1 partion, option GUID.

    Apple - this is illogical and the errors produced are worrying and extremely un-user-friendly.
    Macbook Pro, Mac OS X (10.5.1)

Actions

More Like This

  • Retrieving data ...

Bookmarked By (0)

Legend

  • This solved my question - 10 points
  • This helped me - 5 points
This site contains user submitted content, comments and opinions and is for informational purposes only. Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site. All postings and use of the content on this site are subject to the Apple Support Communities Terms of Use.