External HD Disappeared on Finder and Disk Utility, but Still Appeared in System Report

I have two external HDs directly connected to the USB ports. One is working properfly. But the other one would disappear from the Finder and Disk Utility. However, it still shows up in the Hardware USB section of the Sysetm Report.
What does this mean? Thanks.

You are right. I need to select the device to show its details. The attached screenshots are from the good HD and bad HD. On the good HD, it shows more info.
Any explanation or suggestion? I contacted OWC and they are sending me a replacement. But how do I know it is a OWC HD issue or OS X 10.9.3 sleep issue?

Similar Messages

  • First version MacBook Pro, 10.6.8, freezes with pixelated screen. Repaired HD with Disk Utility, but still happens.  Temp gague shows max of 51C. Any ideas?

    I have the first version MacBook Pro, running 10.6.8 (most current OS that works).  It freezes with a pixelated screen. This may not happen for weeks, or it may happen every time i restart.  I repaired the hard drive with Disk Utility, but the problem still happens.  The temp gague shows a max of 51C. Any ideas on what could be causing this?

    I have the first version MacBook Pro, running 10.6.8 (most current OS that works).  It freezes with a pixelated screen. This may not happen for weeks, or it may happen every time i restart.  I repaired the hard drive with Disk Utility, but the problem still happens.  The temp gague shows a max of 51C. Any ideas on what could be causing this?

  • All my external Hard Drives stopped showing up in both Finder and Disk Utility

    Hello there.
    i have this strange issue that occured just out of nowhere without me (knowingly) having contributed anything to it.
    yesterday i launched my iMac and my external firewire drive wasn't showing up in neither the finder nor on the desktop. i instantly thought about a hard drive crash, but soon tried other things to evaluate (or not) my guess.
    for instance, i unplugged the drive waited a few minutes before i plugged it in again. since this iomega drive is also equipped with a regular usb port i also switched cables and tried connecting it via the iMac usb sockets as well as via an usb hub without any luck. the drive still won't show up. so i launched the Disk Utility, to see if the drive needs some checking/repairing, but to my surprise it wasn't showing in Disk Utility either.
    thus far i only considered this to be an issue with only this particular external drive, but when i eventually switched on a 2nd external drive (this time an usb drive i use for Time Machine) that drive also refused to show up in either the Finder or the Disk Utility app.
    curious as i was, i then fired up a 3rd and 4th external drive and now had all 4 drives running at the same time. none of which were showing up, just as if they weren't even connected with the iMac.
    this strikes me as more than odd. i've heard about hard drive failures and crashes. they just occur over time. maybe and under some very strange coincidences it is possible that two external hard drives quit their jobs at the very same time, but seriously .... 4 of them?? i hardly think so.
    well, maybe it's the iMac's usb/firewire controller that's causing the trouble, i thought. but then again, my other connected devices (iPhone, iPad, Printer, Scanner, eyeTV) are functioning and get detected just fine as far as i can tell.
    i have no idea what's going on. i dismiss the idea of 4 external drives having crashed all at the same time just as much as i don't think that the iMac's usb/firewire controller has got any issues. re-formatting any of the 4 drives is out of the question and even if i'd consider such desperate measures, the Disk Utility wouldn't let me re-format anything anyhow, because the drives aren't listed there. i wish i could just use my Time Machine to resolve the issue but, as i mentioned earlier, i can't access the Time Machine because it also won't show up.
    please, i need an expert's help here. please, somebody bring back my 4 external drives so i can access them in finder again.
    any help will be much appreciated.
    thank you in advance..
    ..Otis

    Launch the Terminal application in any of the following ways:
    ☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
    ☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
    ☞ If you’re running Mac OS X 10.7 or later, open LaunchPad. Click Utilities, then Terminal in the page that opens.
    Drag or copy — do not type — the following line into the Terminal window, then press return:
    diskutil list
    Post any lines of output that appear below what you entered — the text, please, not a screenshot.
    If any personal information appears in the output, edit before posting, but don’t remove the context.

  • DVD Drive dropping off grid, followed by Finder and Disk Utility issues

    I'm having a very strange series of problems with my 8 core 2.8 MacPro.
    A few weeks back I did a DIY repair/replace of my optical drive. For the last few months it was failing to open when the eject button was pushed. The drive would make a noise as if it was going to eject but it would take more and more time/tries to fully engage. After a few calls to Applecare and a few attempts of trouble shooting I got a replacement drive.
    And now I'm having a whole slew of other problems and am at a loss as to what is causing them and how to fix them.
    The drive ejects beautifully...for a while. But for some odd reason after an indeterminate period of time (by which I mean it's not consistently the same amount of time), the drive simply ceases to exist in the eyes of the computer. It will not show up in "About this Mac" (all that shows up is a blank screen when I click the "Disc Burning" section of "More Info"). It will not eject any disc that is in the drive (which shows up in finder sometimes...even if it can't be played by the DVD player application). It doesn't show up in Disk Utility.
    In fact, after a while nothing shows up in Disk Utility. It gets frozen on "Gathering Disk Information" and doesn't show any of the hard drives (yet all of them show up in the Finder window and on the desk top).
    And then the great grinding down of operations goes into full swing - sometimes the finder window won't open. Applications won't quit. Going to the Finder/desktop results in Beach Ball of Death. Yet I can force quit using the Dock. Sometimes I can shut down, sometimes I need to use a hard shut down using the power button.
    I have rebuilt permissions. I've used Disk Warrior to rebuild/repair all disks. I've unplugged all external hard drives. And upon restarting, things will work...for a while...and then things start going wrong in a domino effect.
    I haven't seen any pattern in regards to programs being used (it doesn't, for example, start after I launch any specific program.
    Any ideas or suggestions would be appreciated before I call Applecare again!
    Thanks

    Thanks for the hard drive tip. I'll see if that helps...
    Wish I could tell you what drive I have but today it didn't work upon start-up and I didn't realize it until I started to process/compress something.
    Forgot to mention two other things...
    1) I did a virus scan and everything came clean
    2) This all started last week after coming home and doing an Apple automatic software update. Unfortunately I don't know what it was and not sure if it is linked, as I swapped out the drive right before I left for a long weekend (so only tested the new drive briefly)

  • My external hard drive accidentally switched off during Disk Utility's "erase free space" process.  I restarted the external hard drive and Disk Utility, but now I get the "couldn't mount disk" error when trying to finish the erase.  Please help!

    My external Lacie Quadra hard drive accidentally switched off in the middle of "erase free space", and when I switched it back on Disk Utility was hanging.  So I Force Quit Disk Utility and restarted it.  Now when I try to erase I get
    "Secure Disk Erase failed with the error: Couldn’t unmount disk."
    But "erase free space" seems to work...
    What can I do?  I'm erasing as I'm giving the drive to someone else and I wanted to wipe it clean.
    Also should I use "erase" or "erase free space" if I want to wipe the drive clean?
    Please help!

    Sorry I don't really understand.... there are no partitions on the drive.  How do I repartition it?
    And should I use "erasing free space" or "erase" for wiping clean my drive of everything?  Erase seems to be faster last tiem I tried.
    Thanks!

  • Burning discs... The difference between Finder and Disk Utility?

    I am trying to burn an Ubuntu Live CD. I downloaded the ISO and am trying to burn it correctly. My question is, what is the difference between burning a disk image from Finder and burning it from Disk Utility?

    Put a blank disc in the tray.
    Right click or control-click the .iso, select open with > disk utility.
    When Disk utility opens, select "Burn" in the upper left corner.
    Kj

  • External hard drive not seen in disk utility but can be seen in system profiler

    HI
    i have a 500gb western digital my passport, its been working fine, since i have used it on a windows machine, i can no longer get it to be recognised in finder. The light is flashing on the side and i can see it under USB in sytem profiler. I cant see it in disk utility. i cant format as it has photos etc loaded
    cheers

    An update for anyone who can help me:
    I have tried the external hard drive in other computers (mac and windows), each time I get the same problem above.
    I have removed the HD from the enclosure and purchased a docking station for it (3.5" SATA). When I plug it in to the laptop it disconnects itself straight away before it is visible. With the windows computers it installs the drivers and says that the device is ready to use, then disconnects before it shows up.
    As the HD is not visible there is no option to re-format or anything.
    This is very frustrating as I was using the HD with no issues and it randomly disconnected and I have not been able to access since.
    Thanks in advance for any help.
    Bruce

  • I have repaired startup disk in disk utility but still get message saying startup disk needs repair, help.

    I am on a macbook pro running the latest version of yosemite. I was going to use Onyx to clean it, but I got a message stating that my startup disk needs repair. I command R went to disk utility to verify and repair and the disk was fine. However, I still get the same message when using Onyx. What should I do? Should I command R and reinstall? Will the fact that my startup disk needs repair cause a problem?

    Thank you @EricRoot, I think you may be correct. I don't get that message with other programs. However, I did locate files on my computer taking up way too much space...

  • Finder and Disk Utility not "seeing" 3rd hard drive...

    I've rebooted multiple times and "command, option, p, r" ; tried putting my hard drive from slot 3 to slot 4 in mac pro, it is not being read.
    J

    What drive? make/model/size etc
    Normally an unformatted drive will cause a dialogue on startup (eject, ignore, initialize)
    Moving isn't going to help. 
    Look inside to see the drive will slide in and you don't have any issue.
    Then run Apple Hardware Test
    More likely if anything is drive is DOA; logicboard; 'foreign' format that DU can't mount.
    Putting in a FW case might be handy.

  • External hard drive not recognized in Finder or Disk Utility

    Two weeks ago, my 2007 black Macbook stopped recognizing the hard drive. I was told by some IT friends that the controller had likely failed and I needed to purchase a new laptop. I removed the hard drive and placed it into an enclosure (turning it into an external hard drive) and hooked it up to a new Macbook Pro which I purchased a couple days ago. The external hard drive did not show up in Finder or Disk Utility but the light on the enclosure was on and it was making a very soft whirring noise and got warm after a few minutes. I usually backed up the hard drive but, of course, hadn't done it in a couple of weeks before it died so everything I worked on in that time is lost to me at the moment. I'm trying to avoid paying tons of money for a data recovery service so any advice would be greatly appreciated! Thanks!

    That whirring noise might be due to physical damage on the disk. I know data recovery services are costly but that remains only the solution for damaged HDD. You can get latest quotes on services from different dealers. Proceed only when your data is very important to be recovered.

  • Ipod shuffle 3 : impossible to detect it on mac (finder, itunes and disk utility)

    Hi,
    ipod shuffle 3 : impossible to detect it on mac (finder, itunes and disk utility), but it works, I can listen music. Do you have a solution for me ?
    the same on windows... no détection on plug
    thanks
    Fred

    Does it still charge when connected?  You said it still works with headphones.
    It's possible that the connection port (the headphone jack) on the shuffle has become faulty.  It has different connection points, so it's possible for it to work for headphones (and charging), but not for data.  It's also possible that the USB cable is bad, if you have only one and no alternate way to test it and confirm it's working.
    However, you can try these other things.  Shut down the Mac and disconnect all USB peripheral devices, including any hub.  Use this procedure to reset the shuffle
    http://support.apple.com/kb/HT1655
    Start up Mac with nothing connected, except for standard keyboard and mouse (for a Desktop Mac).  Connect the shuffle to a direct USB port.  Check with iTunes, Finder, and Disk Utility to see if there is any improvement.
    If that works better, experiment with connecting other USB device, to see if there was some type of USB conflict, or maybe overloading of USB bus (for power).

  • Time Capsule Disk Doesn't Appear in Finder or Disk Utility

    I have a 500G Time Capsule (single band, I think) that I want to partition (just into disk images, not volumes) so that I can maintain separate-sized locations for my family's music library, photos, and Time Machine backups for the non-media files on each of a Mac Mini and 4 laptops.  But I will ask more about that later. 
    My more immediate problem is that the Time Capsule Disk Volume generally just doesn't appear in my Finder or in Disk Utility at all.  A couple weeks ago, for some reason, it did appear once and I took the opportunity to create a 215G Disk Image--leaving 250G for the rest of the Disk Volume which was indicated as having 465G rather than 500G actually available.  But since then (as before) the Time Capsule volume hasn't appeared in Disk Utility at all, and only rarely in the Finder.
    In the Finder the Time Capsule appears under the Shared heading in the left panel, with the Time Capsule disk volume appearing as a folder in the right panel (if it connects, which it usually requires a password for, but sometimes it doesn't...).  If I open the folder then the right panel goes blank (indicating, I think, that I have opened the volume but there is nothing inside) and the volume (usually) eventually shows up under my own Mac in the Devices heading.  (That is, the Time Capsule disk volume shows up along with Network, Macintosh HD, and Remote Disk in the right Finder panel when I select my Mac under Devices in the left Finder panel.)  At that point the TC volume shows up in the Finder as a 220G Volume and the disk image shows up indented under it as a 215G Disk Image; indented under the Disk Volume there is also a 5G Sparsebundle file from a Time Machine backup.  If I open the 220G Disk Volume in the right Finder panel then it shows only the 215G Disk Image and the 5G Sparsebundles in the right Finder panel.  This seems to suggest that the 215G Disk Image and the 5G Sparsebundles are both treated as 'used' and the 220G size given for the Disk Volume represents what is left (although 215+5+220=440, so where the extra 25G went I don't know).
    If I open the 215G Disk Image in the right Finder panel then, after a while, it shows up as a Disk Image in the right Finder panel when my Mac is selected under Devices in the left panel.  I can create folders in the Disk Image and copy documents to those folders, at least.
    But in any case, regardless of whether I open the 220G Disk Volume or the 215 Disk Image in the Finder, the Disk Volume never appears in Disk Utility so there is no possibility of reformatting it.  The 215 Disk Image has sometimes shown up in Disk Utility (and once it apparently allowed me the option of partitioning the Disk Image into further Disk Images), but sometimes it doesn't show up and I haven't been able to figure out why it does or doesn't.
    I find this all very confusing and the Finder and Disk Utility behavior seems downright erratic.  I'm not sure whether something is broken or if I just don't understand how it works (starting with the difference between the Devices and Shared headings in the left Finder Pane).  I would appreciate any advice on how I can reliably access the Time Capsule disk volume in the Finder and Disk Utility.  Thanks.

    Same problem after 10.8.2 update yesterday,
    Time Machine functions but disk does not mount in finder.
    The disk also shows up in disk utility when TM is running
    as mounted (beneath a sparse image file) but not visible.
    Is this a bug, or a feature?
    LW
    MBPro. OSX Mountain Lion, backing up to Time Capsule

  • Hard drive disappears and Disk Utility is not finding it

    I woke my computer up from sleep this morning, launched Final Cut Pro and it threw me an error. It said there was a permissions error for one of the volumes FCP was using, then my hard drive disappeared.
    It does not show up in Disk Utility, nor does it appear in System Profiler.
    I took the SATA drive out of my Mac Pro and tried to mount it using an external SATA to USB dock. It spins and sounds ok, but still won't mount.
    Anything I can do to revive this drive?

    all of this pretty clearly indicates that the drive is dead. get a new one.

  • External hard drive not visible in Finder or Disk Utility

    Hi everyone,
    My Wester Digital 2TB external hard drive has disappeared, so to speak, with all my photos. I work as a freelance photographer. Mostly on Lightroom 5.6
    When I plug it in, with firewire, I can feel the disk rotating normally however it does not appear in finder or disk utility.
    I've tried using a USB cable, restarting my mac, forced restart, changing firewire ports (HD has 2 ports), plugging the HD into a different laptop and nothing.
    Ive also searched Finder prefrences and visibility is enabled.
    I have no idea what could have caused this as I was using the HD the night before. I didnt pullout without properly ejecting. Maybe the HD is full or almost, but I dont think that would the cause of these troubles.
    I'm using a late 2011 Macbook Pro OS X 10.9.4
    Any suggestions??
    Thanx

    An update for anyone who can help me:
    I have tried the external hard drive in other computers (mac and windows), each time I get the same problem above.
    I have removed the HD from the enclosure and purchased a docking station for it (3.5" SATA). When I plug it in to the laptop it disconnects itself straight away before it is visible. With the windows computers it installs the drivers and says that the device is ready to use, then disconnects before it shows up.
    As the HD is not visible there is no option to re-format or anything.
    This is very frustrating as I was using the HD with no issues and it randomly disconnected and I have not been able to access since.
    Thanks in advance for any help.
    Bruce

  • I have an external hard drive that shows up in disk utility but Verify and Restore are greyed out.

    I have an external hard drive that shows up in disk utility but Verify and Restore are greyed out. I am trying to determine what is wrong with the drive.
    I need the data on the drive and it won't show up in Disk Warrior. I have tried different Mac's and different USB cords only to find the same outcome. When selected in Disk Utility the information read as such...
    Disk Description : WD Elements 1023 Media                      Total Capacity : 500.11 GB (500,105,740,288 Bytes)
    Connection Bus : USB                                                               Write Status : Read/Write
    Connection Type : External                                                     S.M.A.R.T. Status : Not Supported
    USB Serial Number : 575837314135304D36373132        Partition Map Scheme : Unformatted
    As the drive shows in Disk Utility there must be some life left in it surely. There is a possibilty that the physical connection between the USB cord and the external drive is damaged but since the drive shows up I believe it's unlikely... before I give it to the pro's is there anything else I can do to diagnose the issue?

    Hello,
    I have just experienced the same thing!
    Although my external drive shows in Disk Utility, it does not show in Finder.
    And the Verify/Repair buttons are also greyed out.
    Also, although the drive is 2TB. DU shows it as having Total Capacity of only 4.14GB! (Which should be the Free Space).
    I was wondering if you solved your problem, & if so, would you share your solution.
    I´m afraid to Erase in case I lose all my Data on the drive.
    Thanks in advance for your reply!

Maybe you are looking for