I recently updated the software on my MacBook Pro. Now, my computer no longer recognizes my external hard drive. Could this be related to the software update and, if so, how do I correct the problem?

I Recently updated the software on my MacBook Pro. Now, my computer no longer recognizes my external hard drive. Could this be related to the software update and, if so, how do I correct the problem?

Ari343 wrote:
No, the external hard drive does not show up on Disk Utility. I don't have another computer to try it on.
Perform a PRAM reset:
http://support.apple.com/kb/ht1379
Have you tried all the ports?
Have you tried with a different cable?
Have you tested all the ports with other devices to see that they are functioning?
Ciao.

Similar Messages

  • Why does my iMac (with Mountain Lion) no longer recognize my external hard drive I have used as a back up via Time Machine after the hard drive was accidentally unplugged?

    Why does my iMac (with Mountain Lion) no longer recognize my external hard drive I have used as a back up via Time Machine after the hard drive was accidentally unplugged?

    Do you mean the external hard drive is not mounted on the iMac desktop?
    Check if Disk Utility sees the drive. Applications / Utilities / Disk Utility. If the external shows up in the left column, select it and click on Mount.
    If it does show up this way, I recommend using DU to Repair Disk.

  • Since I upgraded to 10.9.5, my macbook no longer recognizes my external  hard drive. How do I fix this?  External hard drive is a 1TB Toshiba formatted for mac.  Worked fine until latest upgrade.

    Since I upgraded to 10.9.5, my macbook no longer recognizes my external  hard drive. How do I fix this?  External hard drive is a 1TB Toshiba formatted for mac.  Worked fine until latest upgrade.

    Solved the problem by dumping my external HD onto another computer. Re-formatting and re-installing the data.  Not what I wanted to do but it solved the problem.

  • Installed latest itunes update and computer tried to burn a playlist to CD and realized computer no longer recognizes my CD/DVD drive. This is an APPLE Itunes issue. Help!. HPPavillion DV6 64 bit, windows 7

    Installed latest itunes update and computer tried to burn a playlist to CD and realized computer no longer recognizes my CD/DVD drive. After doing some data mining, found out from community this is an long standing APPLE problem- which doesn't get much tech support in terms of fixes. I have an HPPavillion DV6 64 bit, Windows 7 OS . After reading an earlier complaint from 2009 in the support community,  I ran diagnostics from ITunes which gave the following result. Can someone please help? (I'm not enough of a techie to know what I'm doing or how to locate /reinstall CD drivers. I am searching for driver disc but cannot locate.)
    Microsoft Windows 7 x64 Home Premium Edition Service Pack 1 (Build 7601)
    Hewlett-Packard HP Pavilion dv6 Notebook PC
    iTunes 10.6.3.25
    QuickTime 7.7.2
    FairPlay 1.14.43
    Apple Application Support 2.1.9
    iPod Updater Library 10.0d2
    VoiceOver Kit 1.4.2 (222093/222742)
    CD Driver 2.2.0.1
    CD Driver DLL 2.1.1.1
    Apple Mobile Device 5.2.0.6
    Apple Mobile Device Driver 1.59.0.0
    Bonjour 3.0.0.10 (333.10)
    Gracenote SDK 1.9.6.502
    Gracenote MusicID 1.9.6.115
    Gracenote Submit 1.9.6.143
    Gracenote DSP 1.9.6.45
    iTunes Serial Number 0043AC7C0368E428
    Current user is not an administrator.
    The current local date and time is 2012-07-24 23:43:08.
    iTunes is not running in safe mode.
    WebKit accelerated compositing is enabled.
    HDCP is supported.
    Core Media is supported.
    Video Display Information
    ATI Technologies Inc., AMD M880G with ATI Mobility Radeon HD 4250
    **** External Plug-ins Information ****
    No external plug-ins installed.
    iPodService 10.6.3.25 (x64) is currently running.
    iTunesHelper 10.6.3.25 is currently running.
    Apple Mobile Device service 3.3.0.0 is currently running.

    Doublechecking ... did you have CD/DVD drive tests checked when you ran those diagnostics? (I'm not seeing the CD/DVD test results down the bottom of the results where I'd expect to see them.)
    For example, here's what I get:
    Microsoft Windows 7 x64 Ultimate Edition Service Pack 1 (Build 7601)
    Acer Aspire X3400
    iTunes 10.6.3.25
    QuickTime 7.7.2
    FairPlay 1.14.43
    Apple Application Support 2.1.9
    iPod Updater Library 10.0d2
    CD Driver 2.2.0.1
    CD Driver DLL 2.1.1.1
    Apple Mobile Device 5.2.0.6
    Apple Mobile Device Driver 1.59.0.0
    Bonjour 3.0.0.10 (333.10)
    Gracenote SDK 1.9.6.502
    Gracenote MusicID 1.9.6.115
    Gracenote Submit 1.9.6.143
    Gracenote DSP 1.9.6.45
    iTunes Serial Number 003CAD7C0A1258F8
    Current user is not an administrator.
    The current local date and time is 2012-07-26 10:42:53.
    iTunes is not running in safe mode.
    WebKit accelerated compositing is disabled.
    HDCP is supported.
    Core Media is not supported. (16008)
    Video Display Information
    ATI Technologies Inc., AMD Radeon HD 6570
    **** External Plug-ins Information ****
    No external plug-ins installed.
    Genius ID: d6a87ba725121aa1240b1ce936c23470
    iPodService 10.6.3.25 (x64) is currently running.
    iTunesHelper 10.6.3.25 is currently running.
    Apple Mobile Device service 3.3.0.0 is currently running.
    **** CD/DVD Drive Tests ****
    No drivers in LowerFilters.
    UpperFilters: GEARAspiWDM (2.2.0.1),
    E: ATAPI DVD A  DH16ABSH, Rev YA12
    Data or MP3 CD in drive.
    Found 1 songs on CD, playing time 255:57 on CDROM media.
    Track 1, start time 00:02:00
    Get drive speed succeeded.
    The drive CDR speeds are:   4.
    The drive CDRW speeds are:   4.

  • MacBook Pro crashed while deleting old backups off partitioned external hard drive. Now only recognizes windows formatted half of drive. Can the Apple side be saved?

    MacBook Pro 15-inch, Mid 2010
    Processor  2.66 GHz Intel Core i7
    Memory  8 GB 1067 MHz DDR3
    Graphics  NVIDIA GeForce GT 330M 512 MB
    Software  OS X 10.9.5 (13F34)
    I have an external hard drive:
    2 TB Seagate Backup+Desk Media
    Partitioned:
    1TB - Windows NTFS
    1TB - Mac (sorry I can't remember the formatting, whatever Mavricks asked me to use...)
    What happened:
    I was erasing 3 old backups from the Apple partition and my laptop crashed part way through emptying the trash. (it has done this many times before, where parts of the screen are frozen in square blocks displaced all over the screen. Screenshot not possible unless I use a separate camera).
    When I force restarted my computer (holding down the power button) neither side of the drive was accessible. After running the Disk Utility and Verifying and Repairing the Disk Permissions and the Disk Itself (for the Windows side) I was able to access the Windows partition. However, upon attempting to do so with the Mac partition it tells me that it cannot be repaired. I have found many forums discussing SIMILAR situations but none with the same and here is why:
    Up until this happening I could access ONLY the Windows partition when the drive was connected to either my Apple laptop in Bootcamp Windows 7 or my HP laptop in Vista, while my MacBook could access both sides of the drive. HOWEVER, after this crash, BOTH my Windows 7 and Vista can access both sides of the drive (so My files are still all there and accessible) but my MacBook Pro swears that the Apple partition is doomed.
    Since the Apple side of my laptop is my primary workhorse I really want to figure out how to fix my drive.
    So Questions:
    1. Anything else I can provide to the experts out there to help me get this fixed?
    2. Can I custom fix this via accessing the drive on either of the Windows systems?
    3. Why would it suddenly show up in Windows when it became unaccessible to Mac?
    Thanks All!

    UPDATE:
    It has been maybe a month since this happened.
    After I made this post and was checking emails, walking away from computer, and then came back my Mac partition of the External Drive has shown up on the Desktop...
    So, in the ever immortal way of asking the tech to come check the issue and the issue resolving itself, perhaps I should posted on the forum sooner...
    NOTE: The disk still shows up as unusable in the Disk Utility and it appears that the files are read only (cannot make a new folder on this side of the external drive)
    I still consider this a volatile issue because I do not want to lose the files on this half of the partition and I have not gotten a replacement drive yet (too much data to move to my computer and then format the current drive)

  • How do I retrieve the MacBook Pro data that I backed up on an external hard drive

    I was good and always backed everything from my MacBook Pro on an external hard drive.  So, now that I've sold my MacBook Pro, how can I retrieve documents and pictures that are stored on it?

    Hello Achaemenid,
    Thank you for the question.  If you used Time Machine to back up your MacBook Pro, you can restore the backup to a new Mac using the steps in the section titled "Restoring data from Time Machine backups > Restoring your entire system from a backup > Migrating a Time Machine backup to a new Mac" in the following article:
    Mac Basics: Time Machine backs up your Mac
    http://support.apple.com/kb/ht1427
    Thank you for using Apple Support Communities.
    Best,
    Sheila M.

  • HT1751 I have recently purchased a MacBook Pro. My iTunes library is on an external hard drive. What do I do next ?

    Recently purchased a MacBook Pro.
    I am currently setting it up to use. My entire iTunes library is on an external hard drive. What do I do next?

    Quit iTunes.
    Sign into another user account.
    Hold Option, launch iTunes.
    Select Choose library... and select the iTunes folder on the external.
    Do this for all users.
    NOTE: You must quit iTunes when switching users as the library can only be opened by one user at a time.

  • MacBook Pro no longer recognizes USB external hard drives or built-in iSight

    I have an older MacBook Pro 17" Intel that I use with various external USB hard drives (8 of them). It is connected to my LG 720p 32" flatscreen and works perfectly. Recently, when visiting, I disconnected my external HDs and connected my MBP to my brother's LG 1080p and it was OK.
    When I returned home and reconnected my external HDs and TV, it would not recognize the HDs and couldn't find my built-in iSight. Viewing System Information, the USB buses showed an assortment of items, such as the Apple Internal Keyboard/Trackpad, IR Receiver, and Bluetooth USB Host Controller in the buses. The High-Speed Bus showed an external HD as a Vendor-Specific Device, but none of these appeared on the desktop. I plugged in my external iSight to Firewire and it showed up in Photobooth, iChat, and Skype.
    What is the problem and can I fix it myself or must I take it to be serviced?
    Has anyone encountered the same problem? Got any answers?
    I really would appreciate all the help I can get. Thanks.

    I have never heard of this before, but the fact that your external iSight works shows that at least some parts of your Macv's AV circuitry are undamaged. 
    Depending on exactly how you "disconnected" your "external HDs and connected" your "MBP to" your "brother's LG 1080p", I suppose it is possible that your software settings have been compromised somehow.   Here is what I would try if my system showed the symptoms you describe.
    (0) Start by making a current backup if you do not already have one.
    Then try any of the following you have not already considered or used.  Use them in any order you think appropriate and test after each one to determine if the problem is resolved:
    (1) Shut down (do not merely restart) your MBP.  Wait a couple of minutes before starting.
    (2) Test in a different user (NOT the "Guest") account: http://docs.info.apple.com/article.html?path=Mac/10.7/en/mtusr001.html
    (3) Reset SMC http://support.apple.com/kb/HT3964
    (4) Reset PRAM: http://docs.info.apple.com/article.html?path=Mac/10.7/en/mh26871.html
    (5) Repair your startup disk: http://docs.info.apple.com/article.html?path=Mac/10.7/en/mchlp1718.html
    (6) Reinstall Lion and apply the 10.7.2 Combo Update:  http://support.apple.com/kb/DL1459
    (7) Contact Apple or an Apple-Authorized Service Provider for service
    Message was edited by: EZ Jim

  • MacBook No Longer Recognizes WD External Hard Drive

    I've trying to back up to my WD 1tb external hard drive, but my MacBook (2009) doesn't recognize it, which is strange because I've never had this problem before. I tried opening Disk Utilities but it doesn't show up there, either. I guess it's possible this is an issue with the drive, but like I said, I've never had a problem with it before and it seems to turn on fine when I plug it in. Currently running OS X 10.9.5. Really sorry if this is vague, I'm pretty lost and really desperate because I had a lot of important files saved on that backup disc. Any thoughts or advice would be really appreciated!

    The WD hard drive itself is probably fine, the enclosure has likely failed. WD externals are notorius for cheap enclosures failing. Try a different cable first. You can take the drive out and install it in a better enclosure, like one from OWC.
    http://eshop.macsales.com/

  • MacBook Pro is not recognising my WD my passport external Hard drive

    PLEASE PLEASE HELP
    I have 200GB+ of data on my HDD and I DO NOT WAT TO FORMAT IT
    I partitioned my WD my passport external Hard drive on Mac through Disk Utility
    i then plugged it in to a windows XP computer
    and when it did'nt recognise it i went to
    right click My copmuter > Manage > Disk management > then i right clicked on the hard drive's name > convert to GPT disk
    i though by doing that windows will recognise it .. it didnt
    BUT .. when i reconnected it to my mac thats what i got
    it still shows in my disk utility but all the options are greyed out
    PLEASE if someone knows a way to fix this i'd really appreciate if you would tell me
    i have really important documents on that hard drive
    Thanks you in advance 

    I have fears that you data may be gone.
    Did you try to see if you could access data on the Windows PC?
    I am not versed in Windows but based on the steps you describe suggests that you formatted the disk and erased it.  What you might try is to look for recovery software and see if there is anything to salvage.
    Ciao.

  • TS3297 Is it possible for itunes on my MacBook Pro to play songs off my networked WD external hard drive and sync to my iPhone? I prefer to not keep all my music on my laptop and I don't want to pay $25 a year to access my songs if I don't have to.

    Is it possible for itunes on my MacBook Pro to play songs off my networked Western Drive external hard drive so I can sync to my Mac to my iPhone? I do not want to keep any music on my laptop and I don't want to pay $25 to itunes match a year to access my songs if I don't have to.

    Hi turingtest2,
    Thank you for replying.  I've been looking at your posts about setting up iTunes using an external drive.  A bit of background info.  My old computer broke down, so I got a new one from work.  I've always kept my music files on my external drive (I have around 170GB of music).  I didn't follow the suggestions in the "migrate iTunes library" post because my old computer died on me.  However, I've looked at your posts about lay out of the iTunes folders.  Before connecting to iTunes on the new computer, I had reorganized my iTunes folder on my E: external drive, and created an iTunes folder which contains an iTunes Media subfolder.  The music files are in a Music folder, which is in the iTunes Media folder.  I've also put the following files in my iTunes folder: iTunes Library.itl, iTunes Library Extras.itdb, iTunes Library Genius.itdb, iTunes Music Library.xml, as well as sentinel.  I then followed the advice you gave bmw99 on 2 Nov 2013 at 9.58 (sorry, can't copy the exact answer). 
    Just to clarify:  I'd like to keep all my music media on the E: external hard drive (the computer hard drive is too small), and I'm aware i might never have my playlists back, and that all the songs in my library might be ticked.  However, I don't want my library to be duplicated. 
    I'm at work at the moment, but will be back home in about 10 hours, so I can be more specific about folders / files names. 
    I'm glad you picked up my message and greatly appreciate your help.
    Patrice

  • How do I access on my MacBook Pro data from my iMac stored on Lacie external hard drive.

    i am attempting to use my MacBook Pro with the files and data from my iMac which is in the shop. On my iMac I backup regularly with Time Machine to my LaCie external hard drive. When I open my Lacie to my laptop the only data I see is from the laptop--I can't find the iMac data. I tried getting in via Time Machine--same problem. I tried searching through Finder--same problem. I tried logging into my laptop as the other user--same problem. both macs have latest operating system. Both are seriously souped up with plenty of storage and memory.

    Connect the LaCie HDD to the MBP.  Click on the icon.  Is there a folder with the title Backups.backupdb?  That is where the Time machine data is stored.
    Ciao.

  • HT1661 My mid-2009 MacBook Pro has just died via a painful (for me) hard drive failure. I backed up a good percentage of files recently but not enough to keep me happy.  I need to access the dead drive on the MBP via a 2008 iMac. Best options?

    My mid-2009 MacBook Pro has just died via a painful (for me) hard drive failure. I backed up a good percentage of files recently but not enough to keep me happy.  I need to access the dead drive on the MBP via a 2008 iMac. Best options?
    I have ordered a 800 firewire to 800 firewire cable and am hoping to use the target mode option to copy files from the MBP.
    Is this possible?
    Hope so!
    Any advice and or help would be greatly appreciated.
    Many thanks,
    Neil

    Thanks Ogelthorpe.
    Just bought an enclosure to try that also.
    Hoping the MBP isn't really dead but just feigning death
    Fingers crossed.

  • Recent convert to Apple. Previously, I backed up my family pictures from PC to an external hard drive,  a WD MyBook 3T. I can view the pics on my Macbook Pro, but I can't add new pictures. I'm sure this is a format issue, any easy way to correct it?

    Recent convert to Apple. Previously, I backed up my family pictures from PC to an external hard drive,  a WD MyBook 3T. I can view the pics on my Macbook Pro, but I can't add new pictures. I'm sure this is a format issue, any easy way to correct it?

    Install NTFS 3G
    http://macntfs-3g.blogspot.com/
    If you were going to be reading and writing to a NTFS System Partition, you might have to worry about the instability messing up the operating system.  However, you are reading/writing from a non system, backup device so you don't have to worry about screwing up an operating system.
    I would still temporarily move my data to another device and reformat the drive for Mac OS X Extended.

  • My MacBook Pro hard drive is almost full and I wish to store my Aperture Library on an external drive, how do I do this and is the use of USB2 suitable or do I need to use a Firewire external hard drive?

    My MacBook Pro hard drive is almost full and I wish to store my Aperture Library on an external drive, how do I do this and is the use of USB2 suitable or do I need to use a Firewire external hard drive?

    You'll get better performance if you use a Firewire hard drive (especially if you buy a 7200 RPM drive). Firewire's IO speed is significantly faster than USB 2.  USB 2 has a theoretical max speed of 480 Mbps except that it has extremely high over-head.   The fastest speeds you can typically get are about 300 Mbps.   Firewire, on the other hand, has very little overhead.  The fastest speeds you can get are very nearly 800 Mbps.  You will typically be constrained by the maximum read/write speed of the drive, not the speed of the I/O on the Firewire bus.  Now if you had one of those nice shiny new Macs with the Thunderbolt I/O and a Thunderbolt drive (Light Peak) ... I think they alter space and time so that your data arrives before you know you want it. 
    Also... unless you want to buy a solid state drive (very expensive), try to keep your hard drives from becoming much more than about 60% full if you want great performance.  A nearly "full" hard drive is, on average, only about half as fast as the same hard drive when nearly empty.
    USB 2 will work perfectly fine... just not as fast.
    Also... it's much safer to move the entire Aperture library than to "relocate masters".  Your images must be managed.  You can Aperture manage them, or you can manage them.  But someone has to manage them.  If you "relocate" them so that they are no longer stored inside the Aperture library then you'll need to work out a system of how you decide to organize things and it's critically important that you don't start moving files around or deleting things without Aperture's knowledge.  If you do, you'll break the links to your masters and start having problems with missing masters.  If you have Aperture manage the library then you don't need to worry about any of that stuff.... it's safer.
    Do make backups (use the Aperture Vault or use some other backup program, but make sure you back up your work if you care about it.)  There are only two kinds of hard drives in the world:  (1) those that have failed and (2) those that are going to fail.  There are no exceptions to this rule.  Hard drives are cheap.  Backup software is built into Aperture and into your Mac.

Maybe you are looking for

  • Excise / Billing cancellation

    I want to make a check for billing cancellation, that ,first the user has to cancel the excise invoice and then only he can cancel the billing document when he cancelling billing document, similarly if he is cancelling a delivery then first he need t

  • HPE-400f running but no picture or beep/manuf defect mother-board/should'nt HP fix it?

    This is the letter i just sent to the HP CEO. PLEASE HELP! I have been trying to get to the bottom of my HPE-400f problem for months now, and now I found an article disclosed by HP, that my model is included in the models that have a MANUFACTURER's D

  • Comma instead of decimal point

    Is there a global way to doubles and floats to use a comma instead of a decimal point (like we do in Europe) when output as a string? (as opposed to having to reformat each number individually every time I want to display it)

  • Offline Approval in SRM 5.0

    Dear Experts, Can you please clarify below questions regarding offline approvals as i am doing first time this activity. 1)I have created the shopping cart and shecduled  program RBBP_NOTIFICATION_OFFAPP executed. 2) approver received an email with a

  • Updates for quicktime failed once again

    Like a fool I updated quicktime and of course it doesn't work, Can I get an older version of qt and still use the updated version of itunes?