External hard drive seen in Disk Utility, but will not mount.

My external hard drive has power and is spinning, but will not mount. It was fine yesterday. It shows up in Disk Utility and is verified and repaired. Tried the drive on 2 other macs with same result. Tried a new enclosure and that did not work. Tried all ports...usb and firewire. Any way to save my data?
I have screen shot of the partition info from Disk Utility for the hard drive included:

Hi Dominic,
If this is still not mounting, it may be worth trying a PRAM reset...
http://support.apple.com/kb/ht1379
Ben

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External Hard Drive showing in Disk Utility - but not desktop.

A little background:
Yesterday, I moved my shelf where I have my modem, Airport Extreme, Airport Express and an external HD connected to the extreme to be a wireless HD for all users to access. Everything worked great - no problems whatsoever.
Problem: I have reconnected everything exactly as it was and reconfigured it as it was and now the external HD is having issues. When connected to the extreme, I can see it in the airport utility, but cannot gain access to it in that way. When I connect directly to my macbook, it is recognized by the disk utility, but does not appear on the desktop.
I don't know if this may have caused the problem, but I carelessly, unplugged the power bar for which all the above mentioned hardware plugs into when moving the shelf. Now, everything works as it did, except I can't get the express to show up once it is configured (but this isn't surprising as I had to fight with it the first time I configured it - not uncommon I am told), and the HD is no longer accessible via the network, or when directly connected to my macbook.
Help! According to the utilities, the data is still on the disk, I just can't access it in any way.

From the Disk Utility, select the drive and click on the Repair Disk(not Repair Permissions) button. If the Disk Utility finds a problem it can't fix, DiskWarrior or TechTool Pro will likely succeed.
(24355)

I have a mid-2010 27" Quad Core i5 iMac running 10.8.3. Startup disk recognizes the primary hard drive as a startup volume but will not boot from it. Have tried zapping PRAM, ran disk utility. No errors reported Any thoughts?

I have a mid-2010 27" Quad Core i5 iMac running 10.8.3. Startup disk recognizes the primary hard drive as a startup volume but will not boot from it. Have tried zapping PRAM, ran disk utility. No errors reported Any thoughts?

My bad Eric. The startup preference recognizes the primary as a 10.8.3 startup volume but when u select it the system does not boot. I can only boot from my external backup drive

How do you fix bad blocks on an external hard drive without using disk utility

so basically does anyone know how to fix bad blocks on a external hard drive without using disk utlility please

Oh...if you have data you are trying to save then its best to try cloning the drive to another one, which should save its data as-is to another drive. Hopefully you can do so without there being hangups around the bad blocks and keep at least most of your data intact. I'd recommend you try using Carbon Copy Cloner to do this, but you will need a secondary drive that is at least the size of the data on the problematic drive.

I have a fat32 formatted drive (WD my passport 500GB) that is showing in disk utility but does not mount. I am using a macbook with mac osx 10.5.8.

Disk warrior came highly recommended on other posts but because the drive is not mac os formatted it won't do its warrior magic...
The drive shows in disk utility but the options to repair are greyed out. The drive ejects sometimes but not others. The drive powers up with light and I can hear noise (not loud just a hum that confirms (i think) that it is spinning.). The drive is as it cames and booted on both a windows XP pc and my macbook with mac os x 10.5.8.
I have tried test disk but after running for a day with no other command prompts other than the first recommend I uninstalled it.
Any other suggestions?

Hi Christina,
It's quite possible the AC PSU has given out, if It's only Bus powered as it appears, that's the worst idea ever & asking for eventual problems.
What Format is it?
Did you install any WD SW?
Your best bet is DiskWarrio...
http://www.alsoft.com/DiskWarrior/
But others that may work…
Drive Genius…
http://www.prosofteng.com/products/drive_genius.php
TechTool Pro…
http://www.micromat.com/index.php?option=com_content&task=view&id=31&Itemid=83

How do I access an external hard drive that shows up in Disk Utility but will not show up in finder or on my desktop?

I have an external hard drive that just stopped showing up one day. Is there a solution to this problem that allows me to secure the data on the drive before reformatting?

I'm having the same problem bpay14, but with a CalDigit VR2 6TB RAID0 external hard drive.
One day it was showing on my desktop, the other it wasn't. And I still didn't update my Mavericks to 10.9.3 (still with the 10.9.2).
It shows up in the disk utility, and I can even Verify the disk and Repair it (but I don't wanna start repairing
something that probably doesn't need to be repaired, so I haven't clicked the Repaid button, only the Verify button) and it says its working just fine.
But it doesn't show in the Finder or the desktop for that matter.
And even if I force disconnect the cable, I get the usual "this disk was not ejected properly" notification
presumingly the disk was mounted on the desktop and I forced eject by unppluging it...
I found a way to force open the disk, through Disk Utility that's by clicking with the right mouse button
on the disk icon, and chosing OPEN "CalDigit AFRICA 6TB"... (see picture 1)
But... after that, it open a Finder window showing all my internal and external drives, but that drive's
name is in washed grey, like if it was unmounted (see picture 2).
When selected, I can see everything and work normally on the harddrive, even opening FCPROX projects or Libraries, copying from it and writing documents into it... just normal... (see picture 3)
BUT IT DOES NOT SHOW IN THE DESKTOP...
that's my problem...
I even did a Command+i for Info on the hard drive. (see picture 4)
Can anyone shed some light on this issue?
I would be eternally grateful!
Thanks in advance!!!
Cheers!

Hard drive visible in Disk Utility but not on desktop

I have an external hard drive, one of a RAID 1 mirrored pair which I have been connecting to my computer with FW800. I was having problems as was using one of them for a while, which solved them. When I hooked them both up to my computer, they showed up as two separate drives rather than one drive like before (since they were mirrored). Now the one I have been using does not appear on the desktop but I can see it in Disk Utility, but can't fix permissions with it or even verify it. I've tried connecting with USB instead of FW800 but that has no effect.

already checked, there is a problem with my computer or with the external hard drive. Now a new esata array is giving me problems so I am starting to think there is something wrong with the computer.

Lacie Hard Drive Appears In Disk Utility But Not Desktop

Hello,
My Lacie hard drive was working fine till yesterday. It will appear in the disk utility but not on the desktop? I'm using a G4 with mac os 10.3.9. I have tried disconnecting the power and rebooting to no avail.
Any help?
Thank you.

Welcome to the forum.
Have a look at the comments on THIS THREAD. Perhaps there's something there that will help.

HT2674 I have an iMac purchased in May 2011. OSX Lion 10.7.3. I deleted backup file from the external hard drive. Now, the trash can will not empty some of the files deleted. File folder: "Core Services" contains a locked file: "boot.efi". It will not

I have an iMac purchased in May 2011. OSX Lion 10.7.3. I deleted backup file from the external hard drive which operates from Time Machine.
Now, the trash can will not empty some of the files deleted from the backup harddrive.
The trash contains-- File folder: "Core Services" which contains a locked file: "boot.efi".
It will not delete.
How do I get the trash can empty of these files?

Yes, the Old Master file has a folder for each year where I find all photos from that specific year. I am attaching a screen shot of the file.
In the meantime i have managed to download all photos (it did not download any video files though in mpg, avi, 3gp, m4v,mp4 and mov format) to a new iphoto library. Unfortunately the photos are quite mixed and often doubled up. I ma considering to purchase iphoto library which checks all duplicates in iphoto. this will save me a lot of time. What do you think?

I have an eMac and am trying to copy/move movie files from eMac to external hard drive for backup. The eMac will not allow me to do this. Keeps reading error -61. Any suggestions are greatly appreciate. Thanks!

Trying to backup movie files from eMac to external hard drive. Keep getting error -61. Any suggestions? Thanks

Good advice from Keith.
wrPermErr
= -61, /*write permissions error*/

Can't modify external hard drive partition with Disk Utility

Hi,
I have an external 750GB hard drive that I previously formatted as FAT 32 because I wanted to be able to plug it into Windows computers as well. I was not very thoughtful at the beginning and I just created one big 750GB partition. I currently have 450GB used and about 300GB free.
I would like to create a new partition in the free space without losing the data I have in the disk, and format the new partition as Mac OS Extended to use it for Time Machine backups. Presumably Disk Utility can do it, but when I go to the "Partition" tab it says "This partition cannot be modified" and the "+" sign below it is grayed. Can anybody help me repartitioning my drive without losing my data?
Thanks!!!

That would likely be because the drive is partitioned MBR and not GUID. You cannot repartition an MBR partitioned drive on the fly. What you need is a drive that is partitioned using GUID (GPT) with on partition formatted for the Mac and the other formatted FAT32. But to do that you must start the drive from scratch:
Drive Preparation
1. Open Disk Utility in your Utilities folder.
2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Click on the Partition tab in the DU main window.
3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, set the partition scheme to GUID then click on the OK button. Click on the Partition button and wait until the process has completed.
4. Select the entire partition in the rectangle by clicking on it (the lines will turn darker blue) and click on the [+] Add button. The volume will be divided in two. Select each volume and resize as your require.
5. Select one of the volumes you just created. Set the format type to Mac OS Extended (Journaled.) Click on the Erase button.
6. Repeat Step 5 using MSDOS as the format type.
This will work with any PC that understands the GPT partition scheme which is Vista and Windows 7. Otherwise, you should just leave the drive as it is and forgo using Time Machine or purchase another drive for Time Machine.

Hard Drive Reads in Disk Utility but not in Finder

I have a Seagate FreeAgent hard drive that is configured to NTFS. I use software to read and write to this on my macbook pro. I have plugged my hard drive into my macbook this morning and it will only read in Disk Utility, and not show up at all in Finder. I have plugged it into another macbook and have the same thing. Tried to do disk repair and it said it was repaired and operating normally, but still not opening in Finder. I also tried it on a Dell running XP and same thing, doesn't open as a folder but shows as operating normally in the XP's disk utility equivalent. I have tried finding an answer elsewhere but can't come up with anything. Besides taking it for data recovery, is there anything else I can do or try to fix without compromising the data?
Message was edited by: jazmyn96

You might get more help were you to post in something like the MacBook or OS X forum. This forum is for OS 9, an archived Apple Macintosh operating system.
That said, it sounds like your drive might be dead. When you say that you can see it in Disk Utility, you mean that it shows up in the column on the left? When you repair it, can you hear the drive spinning up?
Can you try making an image of the drive to see what happens?

Can't find External Hard drive in Finder / Disk Utility.

I have a Seagate 3TB drive that I have split between Time Machine and general storage. The drive is no longer able to be found in Finder or Disk Utility. I've restarted the drive, reset the PRAM and SMC (another thread suggested this) and it still has not worked. Any idea how to view this drive?

Is it a USB drive? Is it detected in another port?
Do other computers detect it?
If you boot to recovery (hold cmd + r) does disk utilities see it there?

Cannot see external hard drive except in disk utility

when i open it in disk utility, all the buttons are grey, and i cannot verify or repair the disk. This happened once i updated it to mavericks.

Hi Dominic,
If this is still not mounting, it may be worth trying a PRAM reset...
http://support.apple.com/kb/ht1379
Ben

How long to erase 3TB external hard drive 7x with disk utility?

Just wondering, started Sunday afternoon and its still going 2 days later.

The 7x erase formatting was added to Disk Utility because of government agencies who have it as a requirement for their security. For most people a 1x erase and zero all data is sufficient. Do you really need to do the 7x?
Best of luck.

External hard drive seen in Disk Utility, but will not mount.

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