My external hard drive is no longer showing up on the desk top, it wont even work when I plug it into my media player anymore, help?

Go to Finder > Preferences > General > and in the top section where it says external disks check that the box is ticked. If it is check the connections.

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My WD external hard drive will no longer show up on my Macbook pro.

My WD external hard drive will not longer show up on my macbook pro. The light turns on and you can hear it running but it won't show up either in finder or in the disk utility. This happened a while ago but I really want to get all my photos off the hard drive. Is there anything I can do to get my computer to read it again or get my data off of it?
I don't have access to another Mac to test it.
Thank you

dead sata bridge card. very common problem.
see all about it here:
Your dead external hard drive is likely fine! Great hope for your 'faulty' external HD
verify HD on another Mac however, if same, dead SATA card most likely

My external hard drive is no longer showing up on my computer display

My external hard drive is no longer indicated on my computer desktop display. I have checked connections. What do I do next?

Finder->Preferences->General->set show according to your wants.

Why won't itunes find my library on my external hard drive? All that shows up are the purchased songs in the cloud?

Why won't itunes find my library on my external hard drive? All it shows are my purchased songs in the cloud.

See also this migrate iTunes library post or Recover your iTunes library from your iPod or iOS device.
tt2

My WD external hard drive is no longer show up on my computer-it no longer recognizes it.

I have a WD external hard drive for sometime that I have been using to backup my computer and generally keep some of my bigger things on it(such as degital copies of movies). But suddenly one day my computer won't recognize my external hard drive when I went to plug it in. The light on it that is on when it is plugged in is on when I do plug it in, yet I can't actually find and acess my external hard drive. I don't know whats wrong and how to fix it so I can continue using my hard drive.

dead sata bridge card. very common problem.
see all about it here:
Your dead external hard drive is likely fine! Great hope for your 'faulty' external HD
verify HD on another Mac however, if same, dead SATA card most likely

PLEASE HELP! My external Hard drive is no longer showing up when plugged in

I have a Western Digital My Book external hard drive using USB2. I have always plugged it in and the hard drive icon appears on my desktop. However, the drive does not appear anymore. It does not appear in the finder, but can be seen using disk utility. I have tried restarting my computer, trying different USB ports, and nothing seems to work.
I am completely loosing my mind, as I have not backed up the majority of the contents on this drive and need this drive to work!
Is there anything I can do? Is there anything I'm missing? Please help me quickly!

If the Disk Utility lists it in gray, click on the Repair Disk button for it or attempt recovery of its contents.
If the Disk Utility lists it in black, check the settings in the General and Sidebar tabs of the Finder's preferences. If that doesn't work, click here and follow the instructions.
(59518)

My Toshiba external hard drive is no longer being recognised by my Macbook Air - solution?

My Toshiba external hard drive is no longer being recognised by my Macbook Air. The light on the hard drive is on, but it won't appear on my computer's desktop or anywhere else. How can I fix this?

Hi rivraff,
If you are having issues mounting an external hard drive volume, you may want to see if it shows up and/or can be repaired in Disk Utility; you may find the following article helpful:
Apple Support: Using Disk Utility to verify or repair disks
http://support.apple.com/kb/ht1782
Regards,
- Brenden

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.

How do i repair or recover data from a corrupt USB external hard drive that does not show up on my Mac desktop or disk utility

How do i repair or recover data from a corrupt USB external hard drive that does not show up on my Mac desktop or disk utility?
Last night i was using my external hard drive, for some reason the folder just closed and i couldn't find it on my desktop.
After googling solutions, i found it in the disk utilities, i clicked on the 'repair' button many times, but it said the 'error...' message.
So i ejected it to try again, now when i connect the USB external hard drive it doesn't show up on my desktop or disk utilities.
I really just want to either repair or recover the data on it because it literally has everything (documents, work files, photos etc) on it,
I downloaded an application to recover my files but it needs the USB to at least show up.recognise it which mine doesn't.
I know i should've backed it up on another USB, this definitely teaches me for next time to back up all my files.
Are the files lost forever or can i recover them by going to a shop or using a software?

Thank you for responding.
This might sound stupid since i'm not really knowledgeable with Macs,
but since all my files were moved from my mac computer to the external hard drive,
is it possible to recover those files through my Mac - like recovering deleted files?

IPhoto library on external hard drive will no longer open

I'm hoping that someone will be able to point me to a simple solution to my problem...
I'm running iPhoto 9.6 on a MacBook Pro (Retina, 13 inch, mid-2014). The OS is Yosemite 10.10.1. Because the flash storage is only 250GB I have my main iPhoto library (146GB) on a partition of an external 1TB Lacie Rugged drive. The external hard drive also has partitions for Time Machine Backup and SuperDuper Bootable Clone. I have a separate, much smaller iPhoto library on the MBP which contains recent photos.
Yesterday I failed to reconnect my MacBook Pro to the power source when I put it back on my desk. The result was that the battery went below 5% and the MBP turned itself off and also ejected the external hard drive (some time after I reconnected the power cable there were dialog boxes on my screen informing me that each of the three partitions had been ejected incorrectly). I waited until the MBP was fully charged before I tried to open my 'main' iPhoto library on the external hard drive. I received a message that the library would have to be upgraded to work with the computer (very odd, because it had already been upgraded last October when I upgraded from Mavericks to Yosemite and has been working without any real problem ever since then).
After some hours when the only message on the screen was 'Rebuiding Thumbnail Caches' I pressed Cmd+Option+Esc I saw that iPhoto was 'Paused' - that message subsequently changed to 'Not Responding'. I 'Force Quit' iPhoto but the iPhoto library will not open at all from the external drive.
As a test I quit iPhoto and re-started using the Option key and chose to open the iPhoto library which is on the internal drive and it opened without any problem.
I recall that it used to be possible to fix this sort of thing (perhaps not) by trashing the com.apple.iPhoto.plist file, however, I don't seem to be able to find it :-(
I'm really at a loss as to how I should approach this problem and I would be very grateful for any suggestions that can be offered.
Cheers
Tricia

Further update ....
I downloaded and installed iPhoto Library Manager and then chose Library - Rebuild Library. Unfortunately, when it had finished the result was 0 images in any file or folder. I checked the log (which is incredibly long) but here's the beginning of it which seems to indicate that the problem is that an essential file is missing -
2015-01-21 10:49:18.671 iPhoto Library Manager 4.1.11; iPhoto 9.6; OS X 10.10.1; unregistered
2015-01-21 10:49:19.033 Rebuilding library /Volumes/Pictures/iPhoto Library
2015-01-21 10:49:19.033 Rebuilt library located at /Users/Tricia 1/Pictures/iPhoto Library (rebuilt).photolibrary
2015-01-21 10:49:19.035 Building preview…
2015-01-21 10:49:19.042 Photo transfer settings: source libraries = /Volumes/Pictures/iPhoto Library, copy faces = true, copy places = true, combine album contents = false, photo attributes copied = (comment, date, flagged, hidden, latitude, longitude, name, rating)
2015-01-21 10:49:19.042 Loading data for library /Volumes/Pictures/iPhoto Library…
2015-01-21 10:49:19.056 Version number: 9.6
2015-01-21 10:49:19.057 An error occurred: Trying to load database for library “/Volumes/Pictures/iPhoto Library” failed. Some information such as faces, places, and edit history may not be transferred succesfully. (error = Error Domain=PLDatabaseErrorDomain Code=1 "The SQLite database file could not be found." UserInfo=0x10e9c1c10 {PLDatabaseErrorVendorErrorKey=14, PLDatabaseErrorVendorStringKey=unable to open database file, NSLocalizedDescription=The SQLite database file could not be found.}
After this each entry has a dialog that basically says the image file is missing from /Volumes/Pictures/iPhoto Library.
As mentioned in an earlier post I do have another iPhoto Library on my 2008 MacBook.
Can someone advise the best way to proceed? I'm thinking that I should erase the partition of my external hard drive that is called Pictures and then connect the external hard drive to my 2008 MacBook and simply drag and drop the iPhoto Library to the Pictures partition. IIRC, that's the way I moved the iPhoto Library last October when I bought my new MacBook Pro which didn't have enough storage for me to be able to store my iPhoto Library on the MBP. I could then reconnect the external hard drive to my MBP and the iPhoto Library should reappear, shouldn't it?
Looking forward to more input ...
Tricia

My external hard drive will no longer connect to my macpro......any ideas on how to solve this problem??

My external hard drive will no longer connect to my macbook pro via FW800........Any ideas on how to solve this??

Reset the SMC, see this Apple note: http://support.apple.com/kb/HT3964
Also reset the PRAM:
Shut down the computer.
Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.
In most cases, those two actions will fix the port issue. If it's still an issue, you may need to see if the external hard drive can connect to another system, to ensure it's not having problems.

Once I upgraded to ML, I'm now finding that my Seagate Free Agent external hard drive is no longer being backed up by Time machine. Do I have to wait for Seagate to update their drivers for this hard drive?

Once I upgraded to ML, I'm now finding that my Seagate Free Agent external hard drive is no longer being backed up by Time machine. Do I have to wait for Seagate to update their drivers for this hard drive?

I tried your suggestion, and it's been giving me the message "Preparing for Backup" for the past 8 hours. Does this mean TM is backing up my hard drive? I'll give it a few more hours, but if nothing else happens, I'm not sure what else to do. I'm not sure if there are any new external hard drives that are compatible with ML yet.

Windows not recognizing my time capsle - I just purchased a new computer that runs windows 8 and it doesn't want to recognize the time capsule as an external hard drive (ie doesn't show up under my compter). I've downloaded airport utility...

I just purchased a new computer that runs windows 8 and it doesn't want to recognize the time capsule as an external hard drive (ie doesn't show up under my compter). I've downloaded and run airport utility, but it seems to have a hard time finding the time capsule...maybe one out of 10 times it will find it.
What's more, when I look under network infrastructure under the control panel, it shows my Broadcom ADSL centurylink Router...so I'm wondering if my modem/router combo is overriding the router function on my timecapsule and the time capsule is not being used as a router...
Any help much appreciated!

In this case the TC should be in bridge mode.
Win8 is still problematic. Try using ethernet instead of wireless. I think the drivers are poor still and it is well worth having a try via ethernet if you haven't already.
Otherwise you will need to wait for apple to release bonjour for windows 8 and airport utility.. which is not out yet.
Also make sure the windows is set to home, not work or public.. even turn off the firewall.
Open windows explorer and type the TC ip address into the address bar.. (none of which is perhaps the same.. I gave away windows at vista.. shudder)
\\TCIPadderss.

Owc mercury elite external hard drive will no longer come up on my desktop

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I have iMovie 09. I just erased my external hard drive, but it is still formatted for the mac. However, iMovie will not recognize the hard drive. It shows the only hard drive available is the computers. How do I get the external hard drive to show up?

I have iMovie 09. I just erased my external hard drive, but it is still formatted for the mac. However, iMovie will not recognize the hard drive. It shows the only hard drive available is the computers. How do I get the external hard drive to show up?

In Finder's Menu, select Go menu>Go to Folder, and go to "/volumes". (no quotes)
Volumes is where an alias to your hard drive ("/" at boot) is placed at startup, and where all the "mount points" for auxiliary drives are created for you to access them. This folder is normally hidden from view.
Drives with an extra 1 on the end have a side-effect of mounting a drive with the same name as the system already think exists. Try trashing the duplicates with a 1 or 2 if there are no real files in them, and reboot.
If it does contain data...
http://support.apple.com/kb/TS2474

My external hard drive is no longer showing up on the desk top, it wont even work when I plug it into my media player anymore, help?

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