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  1. #1

    Member Since
    Oct 31, 2006
    My mac is here. Won't recognize my usb hardrive
    My new iMac will not recognize my usb hard drive. Any Ideas?
    The hard Drive is an IDE drive in a USB cradle adapter. My old Windows laptop can read it but not my Mac.

  2. #2

    yogi's Avatar
    Member Since
    Jan 14, 2005
    Zurich, Switzerland
    Mac Mini, iPad Air 2, iPhone 7+, Apple TV 4th Gen, Apple Watch (38mm Link Bracelet)
    Possibel Ideas for the problem:

    Did you plug it on the keyboard or in the back? What Filesystem is your drive using?
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  3. #3

    eric's Avatar
    Member Since
    Nov 04, 2006
    twin cities, mn, usa
    from what i understand, this could be a power issue too.

    do you have the double ended cable or just a single?
    (single appears normal - standard usb plug on one end, some standard or proprietary end that goes into your device. the double will have an additional standard usb plug probably attached to the first by a short cable).

    the double allows for more juice to power the external harddrive.
    one came with my 2.5" enclosure. i've got an 80G drive in that one from an HP17" laptop that melted on me (i think it's a 5400). i've never had to use both connections. not sure if it would be faster with both. but i've had no issues either way.

    i've also got a 3.5 inch enclosure with a 120G drive in it. however this puppy has it's own power supply.

  4. #4

    eric's Avatar
    Member Since
    Nov 04, 2006
    twin cities, mn, usa
    oh, and about the filesystem.

    the 80G drive had ntfs when i pulled it from the other laptop. when attached to the macbook it could see/read all the files, but i could not delete or modify any of them. i had to move all the data i wanted to keep off that drive, and then reformat using a windows file system that the mac could have full access to (probably fat32, can't remember) and that i could access from my work laptop which is a wintel machine.

  5. #5

    Daddy Elmis's Avatar
    Member Since
    Mar 28, 2006
    until I reformatted my usb 120g harddrive to FAT32, the mac would not see it either (it was originally formated NTFS for XP). With FAT32 both the mac and XP (running under Boot Camp) have no trouble with the drive.

  6. #6

    caribiner23's Avatar
    Member Since
    Feb 06, 2005
    MacBook Pro Retina 13" iPhone 7 iPad Air and many iPods
    I would put money down that this is a power issue. You may need some sort of power source in order for it to work on the Mac.

    Yogi's suggestion is valid in this vein-- make sure you have it plugged directly into the USB port on the computer, not through a hub or any kind of extension.

    Does it light up (if there are any lights on it) or does it just sit there? Can you tell us the make/model of the USB/IDE adapter?

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