Portabe USB hard drive random disconnects

I recently purchased a Canvio 1TB portable hard drive. It occasionally disconnects itself from the computer, seemingly at random, without me touching the drive or cable. My old 320GB USB 2 hard drive, with a double cable, never does this. Do I just need a double USB 3 cable, or is there something else going on?

I recently purchased a Canvio 1TB portable hard drive. It occasionally disconnects itself from the computer, seemingly at random, without me touching the drive or cable. My old 320GB USB 2 hard drive, with a double cable, never does this. Do I just need a double USB 3 cable, or is there something else going on?

Similar Messages

  • USB Hard Drives Keep Disconnecting or Not Responding

    Hi,
    This is a long post - but one that I hope someone can offer advice on.
    The Hardware
    Mac Pro running OSX 10.8 (but this has happened on all versions of the OS i.e. 10.6/.7 etc)
    3 x Internal SATA Hard Drives - All working perfectly.
    External Drives:
    2 x Western Digital My Book 1TB USB Hard Drives
    1 x Seagate 750GB Hard Drive with USB2 connectivity
    2 x IcyBox Dual Bay USB2 hard Drive enclosures using JMicron Chipsets - these enclosures have 2 x 1TB Western Digital Green in each (totaling 4 TB across the 2 enclosures).
    D-Link 7 Port USB2 Hub
    The Problem
    - USB Hard Drives connected to the Mac are ejected from the system without notice and at random times AND/OR
    - The external hard drive remains mounted, but when trying to write to the drive/partitions, Finder throws an error message up saying the operation cannot be completed - error code -50.
    - Time Machine:  TM will back up successfully several times, before eventually throwing an error up that it cannot create the folders required on the drive.
    - The only way to be able to use the drives again is either remount the drive, or in some case, it is required to completely power the drive down and then reconnect.
    Re-creating the problem
    I have honestly not found a sure-fire way of replicating the problem.  It seems completely random.  It happens when I am actually sat at the computer, but it also happens when I am away from the computer.
    In the past - my Time Machine hard drive has been one of the Western Digital MyBook drives.  I also used the second MyBook for SuperDuper backups (extra redundancy).  The 4TB drives in the IcyBox enclosures have been used to backup my ripped movie collection.
    Recently however - I decided to have 2 of the 1TB drives in the IcyBox enclosures to be TM and SuperDuper backups.  I have however reverted TM back to one of the Western Digital drives, purely for testing purposes.  SuperDuper is backing up to one of the 1TB drives in the IcyBox.
    I am trying various things to see if I can find the issue, but it is such a random event that it is taking ages to even come close to find a problem.  Sometimes the drives will stay active for a few days, sometimes only a few hours, even minutes.
    Theories
    I have several theories as to why my USB drives continually disconnect.
    1.  The D-Link USB Hub.
    Could connecting the drives through the hub be causing the problem?  I don't really see how, unless it is a documented case that D-Link USB hubs do not play nice with OSX?  To try and rule this out I have connected the current Time Machine back up drive (Western Digital MyBook) directly to the USB port on the back of the computer.  The SuperDuper (IcyBox enclosure) drive is currently connected through the D-Link hub.  I have removed all the other drives from the enclosures - so at present I have only 2 external drives connected (1 x 1TB Western Digital MyBook, 1 x 1TB Western Digital Green inside one of the IcyBox dual-bay enclosures - connected through D-Link Hub).
    2. JMicron Chipset
    I have done a bit of research on the internet and there are a few indications that perhaps JMicron SATA-to-USB controller chipsets found in a lot of external hard drive enclosures (including the dual bay IcyBox external enclosures that I have) do not play nice with OSX.  If the JMicron chipsets in the 2 IcyBox enclosures is a problem - would that cause issues with other USB devices on the USB bus off the Mac?  (i.e. can the JMicron chipset in the enclosures cause devices such as the WD MyBook drives which I assume use a non-JMicron chipset, to experience similar failures?)
    3.  Green Hard Drives
    As I have said, I have 4 Western Digital Green 1TB hard drives inside the IcyBox Dual Bay Enclosures.  Could the fact that these drives are 'Green' be causing a problem?  They do go to sleep after x number of minutes, but they do wake up when required.  But could on the occasion when I have problems, could this be caused by the 'Green' feature interrupting OSX in waking the drives?  Coupled with JMicron chipset, could this be compounding the issue?
    Possible Solutions
    I am prepared to spend money on replacement drives and/or enclosures etc - but I would hate to spend x amount of money and have the same problem.  So I am hoping to get some advice on what drives/enclosures are more than likely to work flawlessly with OSX.
    Thanks for reading!

    FYI - re: the SuperDuper drive that is in one of the IcyBox enclosures.
    I just opened this drive up in Finder.  I heard the drive wake up, but when I came to copy a file over (tried various file sizes) - I got the error -50 message.
    Here is the info from Console.
    31/07/2012 23:35:52.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:52.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.000 kernel[0]: disk4s2: 0xe000c2e4 (UNDEFINED).
    31/07/2012 23:35:53.320 fseventsd[55]: disk logger: failed to open output file /Volumes/Data 1/.fseventsd/0000000002478a7f (No such file or directory). mount point /Volumes/Data 1/.fseventsd
    31/07/2012 23:35:53.320 fseventsd[55]: disk logger: failed to open output file /Volumes/Data 1/.fseventsd/0000000002478a7f (No such file or directory). mount point /Volumes/Data 1/.fseventsd
    Also, while the drive was inaccessible, I tried 'Verify Disk' in Disk Utility - here are the results
    Verifying volume “SuperDuper”
    Checking file systemPerforming live verification.
    Checking Journaled HFS Plus volume.
    Checking extents overflow file.
    Checking catalog file.
    Checking multi-linked files.
    Checking catalog hierarchy.
    Checking extended attributes file.
    Invalid leaf record count
    (It should be 2 instead of 1)
    Checking volume bitmap.
    Checking volume information.
    The volume SuperDuper was found corrupt and needs to be repaired.
    Error: This disk needs to be repaired. Click Repair Disk.
    Please also note that the all my external hard drives have recently been reformated using GUID part. map and HFS Journaled.

  • External USB hard drive suddenly disconnecting

    Over the last two days, I've noticed that my external drive (a Freecom 500GB) has just randomly disconnected at various points. I haven't removed the cables, or even jolted them. An error message appears saying that the drive has been disconnected without being ejected, and that this may cause me to lose data. But I'm not disconnecting it manually!
    Is this likely to be a fault with the drive or the Mac?

    If the drive is bus powered and you have no AC adapter for it or it has no provision for connecting one, you will need to buy an AC-powered USB hub to connect to the Powerbook, and plug the drive into the hub. The drive isn't getting enough power from the USB bus at some times, and when the power is inadequate, the drive drops off the OS's radar even though it remains connected.

  • My iphone external hard drive keeps disconnecting so it tells me I disconnected improperly. I have changed electric cord directly to outlet and usb also direct, and it still happens.

    I store ALL my photos (400 events) on an external 1T hard drive. The hard drive keeps disconnecting so it get a msg telling me I disconnected improperly basically which is a serious no no. I then have to re-start. I have tried connecting directly to the wall outlet, to a super duper surge protector and also have connected the usb (was on a usb port) directly to the computer. But it continues to happen a total nusance. What do I do?

    I would first contact  Seagate's tech support for a possible solution. If that doesn't prove successful then I would try a different product or consider building your own.
    Basic Backup
    Get an external drive at least equal in size to the internal hard drive and make (and maintain) a bootable clone/backup. You can make a bootable clone using the Restore option of Disk Utility. You can also make and maintain clones with good backup software. My personal recommendations are (order is not significant):
    Carbon Copy Cloner
    Data Backup
    Deja Vu
    Silver Keeper
    Retrospect
    Super Flexible File Synchronizer
    SuperDuper!
    Synchronize Pro! X
    Synk Pro
    Synk Standard
    Tri-Backup
    Visit The XLab FAQs and read the FAQ on backup and restore.  Also read How to Back Up and Restore Your Files.
    Although you can buy a complete external drive system, you can also put one together if you are so inclined.  It's relatively easy and only requires a Phillips head screwdriver (typically.)  You can purchase hard drives separately.  This gives you an opportunity to shop for the best prices on a hard drive of your choice.  Reliable brands include Seagate, Hitachi, Western Digital, Toshiba, and Fujitsu.  You can find reviews and benchmarks on many drives at Storage Review.
    Enclosures for FireWire and USB are readily available.  You can find only FireWire enclosures, only USB enclosures, and enclosures that feature multiple ports.  I would stress getting enclosures that use the Oxford chipsets especially for Firewire drives (911, 921, 922, for example.)  You can find enclosures at places such as;
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    OWC
    WiebeTech
    Firewire Direct
    California Drives
    NewEgg
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  • External USB Hard Drive disconnects during large file transfers.

    I have a Western Digital 2TB USB Hard Drive that Ive been using perfectly for a couple of years on my MacBook Pro. A couple of months ago I bought a 27inch iMac and started using it as my main computer. So I had that hard drive connected to my iMac.
    I started to notice that during large transfers (be it many files or 1 big one), usually into the Gigs, I suddenly got a warning message saying that the Hard Drive was inappropriately disconnected. It doesnt appear in Disk Utility so I have to manually connect and disconnect the drive in order for it to show up again on the iMac. I tested it again on my MacBook and the same thing happened.
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    I've been having similar problems with Lion on both external USB2 drive docks and more recently a Mediasonic 4 bay Firewire RAID drive.  It was suggested that powersaving mode shut these down but changing that didn't completely solve the problem.  I'm returning the Mediasonic for a replacement but suspect that it is something in the OS that is causing it.
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  • Airport "sees" USB hard drives, but Finder can't find them!

    Yesterday, my iMac's Finder could see my external USB hard drive connected to AIrport, but not today. Airport sees it right now--I've checked and updated it and restarted it. Finder still can't find the drive. I click on my Airport connection in the Finder sidebar, my usual route to the hard drive, but the connection window hangs. And hangs. I need access to the files on that hard drive. Problem is, another iMac using Tiger needs access, too, so I can't disconnect arbitrarily. With that iMac, Tiger's Finder sees the files, and can access them. But not this 20" 2.4G iMac with Leopard 10.5.3. What's going on?

    floba,
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    i have another issue that may be completely unrelated, but maybe not..
    i clear my spotlight shortcut key (command+spacebar) because it conflicts with common Adobe app commands i use. But i frequently will find that this shortcut key is RE-ENABLED. At the same time, my shortcut to use Spaces (command+f8, command+arrow keys, and command+numk keys) are CLEARED as if i had never set them. This happens consistently and is frustrating. I don't reboot very often, but i under 10.5.2 i often came home to find my computer has locked up, so it would seem these shortcuts all reset when i reboot, and i wonder if my external drive index is lost every time the drives are ejected.
    Vista's completely useless search features were a main reason i gave my PC's away and bought macs. I'm obviously finding these failings frustrating on the mac. I'm even more disappointed at the news Snow Leopard is a bug fix and is selling as a separate OS. Installing additional programs is not an option, i want the OS to do what i tell it to do /rant

  • LaCie d2 195 GB USB hard drive and new iMac

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    PowerBook G4 12   Mac OS X (10.4.4)  

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    Anoop in the UK
    apollo11
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  • When I try to direct my iTunes library to my USB hard drive, it stays in 'connecting' status. Why?

    I have an airport extreme that has a USB hard drive. I had my iTunes on my MacBook pro directed to the hard drive. It stopped using the hard drive and now I can't direct it to the hard drive. The Airport utility can see the hard drive and I didn't change any set ups. I have tried powering down and powering up the Airprot extreme. I have tried disconnecting and reconnecting the hard drive.
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    Thank you for your response. I have done this...when I open the iTunes folder copied from my old computer, each song appears only once. When I open iTunes each song appears twice. Should I uninstall the iTunes folder from my old computer and reinstall it? It make no sense that I have 2 of everything in iTunes. Thank you for responding - I really appreciate it, as I don't want to have to delete each duplicate song

  • Airport Extreme Base Station Losing Connection To USB Hard Drive.

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    I just found this thread - I am not sure the energy saver option will apply to non 'local' hard drives, i.e. the hard drive connected to the AEBS.
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  • WD My Passport 1TB USB external drive randomly ejects from my iMac and MacBook Pro.  I have tried two separate USB cords.  I have updated the firmware.  I have tried it on my MacBook, two different Macbook Pro's, and my iMac.  All give the

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    Thanks,

    Send Apple feedback. They won't answer, but at least will know there is a problem. If enough people send feedback, it may get the problem solved sooner.
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  • Can't see contents of USB hard drive connected to Time Capsule

    Hi. I have a USB hard drive connected to my Time Capsule (which I just got today). I just want to use it as a shared drive, so that the users in my home can use it to access common files (media files, stuff like that).
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  • I have a time machine backup file on a USB hard drive.  I bought a time capsule / airport extreme, flat 3TB.  I wish to transfer the backup file from the usb hard drive to the time capsule hard drive.  10.6.8

    I have a time machine backup file on a USB hard drive.  I bought a time capsule / airport extreme, flat 3TB.  I wish to transfer the backup file from the usb hard drive to the time capsule hard drive.  10.6.8

    Unfortunately, Time Machine backups that are stored on a drive that has been connected directly to a Mac are completely different than Time Machine backups that are stored on a Time Capsule.
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    http://pondini.org/TM/18.html
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  • How to use iPad (4th gen) to edit with iMovie - but using an external source such as a USB stick or external USB hard drive

    Want to use my iPad (4th gen) to edit a movie using iMovie - easy enough if the movie file is on the iPad - but what if it's too large - can I keep the source file on a USB stick or external USB hard drive and edit from there?  How can you do this?

    You can't export any type of file using the camera connection kit, so a USB flash drive or SD card won't work.
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  • How can I control media with ipad on xtreme usb hard drive

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    Trying to use usb hard drive off extreme via ipad and iphone as a media server to go on my boat. My aim is to have the express with hard drive to have all my movies and music on it and use ipad, powerbook and iphone to control this through apple tv to my 42 inch LCD tv.
    I am pulling my hair out here. Have purchase new Xtreme and plugged in a usb hard drive and think I have set it up properly as I can see and mount the hard drive on my powerbook and play videos etc via wifi (also conected to the internet) . Also when I have  the xtreme and drive mounted on my mac I can access and play the media on the xrpess server on ipad via app called quick explorer.
    Problem is that it seems to be picking up the xpress usb drive via the powerbook as when I shut down my powerbook I can see the usb drive but it keeps on deniying me the permission even though the passwords are correct.
    Does anyone know if there is a correct way of setting this up to work or if there is an app or does apple have a way for their standard players to pickup the usb drive and control the media via iphone or ipad.
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  • Can I set up multiple usb hard drives- one for time machine and a second for media? Can one also print wirelessly with an old HP C6280 printer?

    Can I set up multiple usb hard drives- one for time machine and a second for media?
    Can one also print wirelessly with an old HP C6280 printer?

    Can I set up multiple usb hard drives- one for time machine and a second for media?
    Yes.
    Can one also print wirelessly with an old HP C6280 printer?
    Possibly by using an Airport Express, but depends on what type of port connection the printer requires.

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