MBP 2010 - USB drives ejecting by themselves?

On my new 2.4 i5, USB hard drives are ejecting randomly by themselves and then giving me an error saying they were removed incorrectly?

Are these bus powered or self powered (ie with their own power supply) drives, djanthonyw? If they are "bus powered" are you using a "yoke" cable to two USB ports or just a single USB power feed (which is likely to fail to provide enough power in any high power demand situation, with the sort of consequence you mention)?
Any particular brand? (Some USB drive enclosures bridge sets/ drives don't seem to behave very well if the computer goes to sleep, for example)
Sticking to good FW drives can give some serious benefits beyond much faster speed in such circumstances.
Cheers
Rod

Similar Messages

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    I am having a very odd, and potentially "dangerous" (as it may lead to corrupt backups) problem with the USB ports on my brand new late 2011 Macbook Pro 13". The problem is that any usb drive (incl. Powered External HDDs, USB sticks, memory card readers etc.) eject themselves randomly while connected to any of the two available USB ports. I have read through several discussions about this issue but have not been able to find any explanation or solution to this. The thing which bothers me most is that when I wiggle the usb plug in the port on the laptop, the drives eject SOMETIMES, and sometimes they just eject without me doing anything, and sometimes they don't eject at all; so I don't know if it is a hardware fault, or something which I can fix myself!
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    So, my MacBook Pro has now undergone a logic board swap, and when I got it back from repair everything seemend perfectly fine. The external drives which kept getting ejected are not ejecting any more, no matter how much I wiggle the plug in the USB socket. Then yesterday I tried a small USB stick, and bam - it's getting ejected again when touched slightly. I tried 2 different sticks and the same thing is happening. Then I tried the HDDs again - no problems. Then tried the USB sticks again - no problems. This is really driving me crazy, I cannot understand why it happens so intermittently and then works prefectly like nothing ever happened. Also, it can't be a software issue since physically moving the USB plug affects it. Now I am not sure if I should take it back for another repair and keep fighting, or just learn to live with it. I am wondering if it is simply a design fault with the MacBook Pro, or something to do with the way the USB ports are built. Any ideas on what I should do?

  • USB Drives Ejecting Everything.

    I have had my 15" Macbook pro since 2010.
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    So, my MacBook Pro has now undergone a logic board swap, and when I got it back from repair everything seemend perfectly fine. The external drives which kept getting ejected are not ejecting any more, no matter how much I wiggle the plug in the USB socket. Then yesterday I tried a small USB stick, and bam - it's getting ejected again when touched slightly. I tried 2 different sticks and the same thing is happening. Then I tried the HDDs again - no problems. Then tried the USB sticks again - no problems. This is really driving me crazy, I cannot understand why it happens so intermittently and then works prefectly like nothing ever happened. Also, it can't be a software issue since physically moving the USB plug affects it. Now I am not sure if I should take it back for another repair and keep fighting, or just learn to live with it. I am wondering if it is simply a design fault with the MacBook Pro, or something to do with the way the USB ports are built. Any ideas on what I should do?

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  • Time machine backup from USB drive connected and backing up to Time Capsule

    Hi all forum virgin here, so be gentle.
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    Slymon2000 wrote:
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  • Can't eject USB drive

    Hi,
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    I've been seeing the same problem (and reported it as a bug) with a number of applications (though not the Finder). When a file is in use it is flagged by the system Yosemite seems to either not change the file's flag to not in use or the system isn't getting that the flag has changed. So far exiting the program has solved it for me in every instance - though it is a pain. I think for now it is something we'll just have to live with until Apple tracks it down.

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    Tell my wife that!
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    Output of MBA.
    /dev/disk0
       #:                       TYPE NAME                    SIZE       IDENTIFIER
       0:      GUID_partition_scheme                        *121.3 GB   disk0
       1:                        EFI                         209.7 MB   disk0s1
       2:                  Apple_HFS Macintosh HD            120.5 GB   disk0s2
       3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3
    /dev/disk1
       #:                       TYPE NAME                    SIZE       IDENTIFIER
       0:      GUID_partition_scheme                        *250.1 GB   disk1
       1:                        EFI                         209.7 MB   disk1s1
       2:                  Apple_HFS MacAir Time Machine     120.7 GB   disk1s2
       3:                  Apple_HFS EMC MacAir SuperDuper   80.4 GB    disk1s3
       4:          Apple_CoreStorage                         19.0 GB    disk1s4
       5:                 Apple_Boot Boot OS X               134.2 MB   disk1s5
       6:                  Apple_HFS NewMacAir               29.4 GB    disk1s6
    /dev/disk2
       #:                       TYPE NAME                    SIZE       IDENTIFIER
       0:                  Apple_HFS Test Partition         *18.7 GB    disk2
    CoreStorage logical volume groups (1 found)
    |
    +-- Logical Volume Group 437078AB-823F-4380-8A85-2BEAF6FCF376
        =========================================================
        Name:         Test Partition
        Size:         19026534400 B (19.0 GB)
        Free Space:   0 B (0 B)
        |
        +-< Physical Volume 3F050C46-8D59-4CFD-A8D2-98B49F080F1A
        |   ----------------------------------------------------
        |   Index:    0
        |   Disk:     disk1s4
        |   Status:   Online
        |   Size:     19026534400 B (19.0 GB)
        |
        +-> Logical Volume Family B8003C1B-354A-4C61-B098-F1DEA1156666
            Encryption Status:       Unlocked
            Encryption Type:         AES-XTS
            Conversion Status:       Complete
            Conversion Direction:    -none-
            Has Encrypted Extents:   Yes
            Fully Secure:            Yes
            Passphrase Required:     Yes
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                Size (Total):       18707759104 B (18.7 GB)
                Size (Converted):   -none-
                Revertible:         No
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  • FCP X does not recognize projects and events on USB drive after a time machine restore of the MBP macintosh disk

    FCP X does not recognize projects and events on USB drive after a time machine restore of the MBP macintosh disk.
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  • "Drive not properly ejected"--How do I keep a USB drive mounted constantly?

    I have a 2-month-old iMac, and have had a USB external SATA-enclosure 2.5" 500gb drive attached the whole time. About a week ago, it started randomly giving the "Drive not properly ejected" message and usually it remounts after a few seconds. Sometimes it doesn't and I have to unplug it and plug it back in.
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    >> also Verified and Repaired the disks using Disk Utilities on MacBook Pro
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  • How to eject USB drive?

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