Can't mount second external hard drive

Discussion in 'macOS' started by laclef, Aug 18, 2008.

  1. laclef macrumors newbie

    Aug 18, 2008
    Hi all,

    I've searched the threads but can't find an answer to my problem. I have two problems really but am hoping if I can fix the first, I can work out the second with existing information on the forum.

    I have a WD 500gb external drive which I use with my Powerbook G4 through firewire. It works fine but now I can't seem to use any other external drive. I tried connecting another WD 320 gb external drive which I am plugging in through USB, but get nothing. I also tried running my other mac (Ibook G4) in target mode to access information on its hard drive but have the same issue - the Powerbook just won't recognize/mount (i.e. I can't see it in finder or desktop or disk utilities).

    Any guidance would be greatly appreciated.
  2. Apple Ink macrumors 68000

    Apple Ink

    Mar 7, 2008
    As a rule of thumb.... have you tried repairing the permissions and the disk?
  3. laclef thread starter macrumors newbie

    Aug 18, 2008
    Just ran that repair a couple of days ago. Didn't fix issue. Any other suggestions would be great.
  4. Poncho macrumors 6502


    Jun 15, 2007
    No advice as yet but am I understanding you correctly?

    1. Before you plugged in your WD drives you could see any other drives.

    2. Since plugging in WD drives you can see these but no other drives.
  5. Apple Ink macrumors 68000

    Apple Ink

    Mar 7, 2008
    Try connecting any drive(s) and open Disk Utility. Check if disk utility can 'see' them! Try mounting drives from Disk Utility by selecting any mountable partition which should appear just beneath your HDD (if it shows in DU)!

    If DU is not showing anything, open System Profiler and Select USB/FireWire (while the drive is connected) and see what it says!

    Also, have you tried connecting anything else to your Mac from any other port? Like maybe a flashdrive in USB and a handycam in firewire....
  6. wrldwzrd89 macrumors G5


    Jun 6, 2003
    Solon, OH
    Another thing to try is updating the firmware on the 500GB WD drive, if a newer version is available.
  7. laclef thread starter macrumors newbie

    Aug 18, 2008
    Yes. I have used the smaller external drives before - just plug and go. Since using the 500gb drive, it is the only external drive I can see. Just for clarification, I can only see the 500gb drive when connected. When I connect the 320gb nothing is recognized.

    the 500 has an external power source. The 320 does not. The Ibook (target) obviously does. I thanks for any help you can give.
  8. laclef thread starter macrumors newbie

    Aug 18, 2008
    Tried pretty much everything available in disk utilities. Problem is that only my harddrive or my 500 gb drive (when it's attached) is listed to choose from for repair.

    My video camera is recognized in IMovie and small flash drives work.

    This maybe for a different thread but what I am really trying to do is access the hard drive on my IBook using my Powerbook. I installed Leopard recently on my IBook and am getting the imfamous blank blue screen. I found some threads on how to fix, but nothing seems to be working. Apple says I should archive and reinstall but I need to delete some files to free up the space first.
  9. sickmacdoc macrumors 68020


    Jun 14, 2008
    New Hampshire
    The WD line of portable drives (Passport Essentials, Passport Elite and others) and some other external 2.5" drives require more power than SOME USB ports can provide individually. That is why in the WD documentation they make note of that- and that they will send you at no charge a "Y" USB cable that plugs into two USB ports at once if you need one.

    My guess on that part anyway is that you do indeed need one. It is not uncommon when using Passports with Macs, but some work fine without it. Kind of luck of the draw I guess, as I am assuming you have tried it in other USB ports.

    While this doesn't apply to yours, the Macbook USB port towards the front has been documented as providing more power than the one behind it, so folks using USB drives with them should always plug them in the front port for more success.

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