OS X :: External HD Won't Mount, But Shows Up In Disk Utility?

Sep 12, 2009

I installed SL two days ago and my LaCie firewire external has been working fine. i put it to sleep last night, and when I woke it up today, I got the warning telling me that I had disconnected it improperly (Which I hadn't, because the computer was asleep and the drive never was turned off). This has happened before and I usually am able to shut it off then turn it on again. But this time it won't mount. It shoes up in Disk Utility and System Profiler, but not in the Finder.I have tried switching firewire ports and restarting but to no avail.

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Hardware :: New External HDD Shows Up In Disk Utility But Doesn't Mount

May 27, 2009

A new Hitachi external HDD i downloaded will open in disk utility, but wont allow me to partition to format (gives me an error) and wont let me run repair or anything else. Trying to figure this one out.

All it will let me do is erase the drive to FAT

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Mac Pro :: External Hard Drive Seen In Disk Utility But Partition Won't Mount?

Sep 2, 2014

I've been running a Toshiba 1TB external drive on my Mac Pro tower and it's been working fine.  But yesterday it wouldn't mount.  I could see the drive in Disc Utility, but the partition wouldn't mount.  I brought it into work where I'm running an iMac and it mounted just fine.  Why would it stop working on one computer (where it was previously fine) yet work okay on another? And how do I get it working on the tower?

Info:
Mac Pro, iOS 7.1.2

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MacBook Air :: Disk Utility Won't Allow To Mount NTFS External Hard Drive

Aug 29, 2014

I've recently converted to the Mac-side:

I'm having difficulty with my external hard-drive, here's the info on that one: 

Disk Utility won't allow me to mount the drive, I've tried using a number of softwares to read it (working under the assumption that it's an NTFS drive), including Tuxera and Paragon. I have too much stored on the hard drive to empty it back onto my old computer, and so I'm not able order to re-format it.

Info:
MacBook Air, OS X Mavericks (10.9.4)

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OS X :: Mount HD Without Using Disk Utility?

Jul 13, 2010

Is it possible to mount a hard drive without having to open up Disk Utility?I often unmount my different Hard Drives then remount them later on and I'm getting sick of having to always open Disk Utility.

Is it possible, though another program/utility or in Mac OS X to mount a drive within Finder (or maybe the taskbar?)

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Software :: Installed Disk Utility And Disk Repair - Shows Network Startup But No Hard Drive?

Feb 22, 2010

I ran installer then went to disk utility and pushed disk repair. it ran and indicated in green that no repairs were necessary. i then went to startup disk and only the Diks and network startup showed up but no hard drive. i also open computer to make sure was not wet muddy due to leak in cooling system but all was dry

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Hardware :: Ext. HD Seen In Disk Utility, But, Won't Mount?

Feb 10, 2009

I have a 500GB Seagate USB HD that is about a year old. it is connected to a 2006 Macbook with a 80 GB HD. I plugged the Ext. HD into the computer and the Ext. HD started and spun and the light went on, but won't show up on the desktop where it normally shows up. When I open Disk Utility The External Hard Drive shows up and I say Verify disk and it says it is OK, I say repair disk and it says OK. I then try to mount it and it says: The Disk "Free Agent Drive" cannot be mounted.

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MAC :: Can't Mount Volume (FAT32) In OS 10.2.6, Despite Seeing It In Disk Utility?

Sep 16, 2008

I have to do a back up (I'm cutting in Avid) on this FAT32 volume (for interoperability it is formatted this way), but I can't mount it via the Disk Utility or the 'mount' command in Terminal (it doesn't list the device, despite seeing it in Disk Utility - the volume is greyed out).The drive is connected via Firewire 400 and 800, USB is not available (to few slots).

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Power Mac :: HDD Won't Mount And Disk Utility Cannot Repair

Feb 17, 2012

933 mhz quicksilver primary HD which has 10.5.8 installed, won't mount and disk utility cannot repair, have second HD with 10.5.8 installed, but need primary to mount to retrieve data.

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Windows On Mac :: Unable To Mount Partition - Grayed Out In Disk Utility

Dec 26, 2010

I can boot into bootcamp with no problems. I have been wanting to be able to open the bootcamp in Parallels. Here is the issue:

1. The partition 'disk0s3' is greyed out in Disk Utility. It is not mounted. Mounting does nothing.

2. For reference, the Windows 7 is formatted as NTFS. It is a Windows 7 64-bit install

3. Verify disk does the following:
Verifying volume "disk0s3" ** /dev/disk0s3
Invalid BS_jmpBoot in boot block: efbbbf
Error: This disk needs to be repaired. Click Repair Disk.

4. repairing does the following:
Verify and Repair volume "disk0s3" ** /dev/disk0s3
Invalid BS_jmpBoot in boot block: efbbbf
Volume repair complete.Updating boot support partitions for the volume as required.Error: Disk Utility can"t repair this disk. Back up as many of your files as possible, reformat the disk, and restore your backed-up files.

I have stuff on the Windows partition that I don't want deleted. I'm really stuck on this -obviously, I can just continue to boot into bootcamp, I just would rather open it from Parallels. I'm not sure what or if I made some mistake in setting up Bootcamp, I thought I followed the directions to that. I do know I formatted the partition as NTFS during the install - as I think Windows 7 requires it. I have tried installing NTFS-3G - it is installed, but didn't do any good when trying to mount the drive.

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Power Mac G5 :: Firewire Drive Seen By Disk Utility Won't Mount, Verify Or Repair?

Apr 15, 2009

I have a WD Terabyte drive that I have used for over a year with no problems. A couple of days ago my roommate went to use it and disconnected the drive from my computer without ejecting it first. He used it with his PC and disconnected it without "safely removing" it from his computer and now it will not mount to my desktop of been seen by PC. Disk Utility sees the device but I get an error when I try to repair the disk or verify the disk. It gives me an "error on exit" message. I really need the 700GB of info on that drive. Don't know what to do next.

Information:
Powerbook G4
Mac OS X (10.4.11)

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OS X V10.7 Lion :: Disk Utility Shows Different Available Space Than Finder?

Apr 10, 2012

I just reinstalled Lion from a fresh harddrive. I did not use the migration asistance to pull files over to the new drive, I selested files and dragged them over, So not to fill the drive with things I dont need.... 

So I "Get info" on the main harddrive it shows Which is crazy! Then I use Disk Invintory and it shows:   

and Disk Untility shows:   

Why the difference? Simple question and How do I free up space? I'm also trying to back up using time capsule*

Info:
MacBook Pro (13-inch Mid 2010), Mac OS X (10.7.3)

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Intel Mac :: Hdd Will Not Boot And Disk Utility Shows That It Couldn't Be Repaired

Feb 19, 2012

I used Carbon Copy Cloner to back up to an external hd. Do I now erase the hd reistall the mac os, then pull my files and apps fom the ext hd?

Info:
imac 24", Mac OS X (10.5.6)

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OS X V10.7 Lion :: Disk Utility Shows Incorrect Free Space

Jun 11, 2012

The Finder window shows that I have 302GB of harddrive space remaining, out of 500GB. The Activity Monitor and Disk Utility show I have 240GB space remaining, and my System Profiler shows I have 239GB remaining. I just deleted a bunch of old TV shows off of iTunes (about 40GB worth) to open up some space, but only the Finder changed (up to 302GB from 260GB) but the Activity Monitor, Disk Utility, and System Profiler haven't changed. 

Now, I'll assume the Finder is showing the correct amount of space, but I'm wondering why the other utilites are showing the incorrent amount of space. I have a feeling maybe something was screwed up when I created a 50GB Windows 7 partition through Boot Camp a couple months ago. 

I've attempted to Repair Disk through the Disk Utility and it says everything looks fine. Any solutions to this minor inconvenience? Or at least an answer as to why this is happening?

Info:
MacBook Pro, Mac OS X (10.7.4)

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OS X V10.7 Lion :: Disk Utility Can't Repair Disk (1 Partition) On External Hard Drive

Apr 24, 2012

I have a 2TB Western Digital My Book Studio FW800 external that has 5 partitions, connected to my 2011 iMac. I had help doing the partitions and don't really remember the reasoning, but one is just for my SuperDuper! backup, one is Miscellaneous, one for movie clips off my camcorder, one for misc scanned photo's and one for my genealogy research. I back up using Time Machine to a Time Capsule and also to this WD hard drive with SuperDuper! 

Recently I'm getting a pop up message that "Mac OS X can't repair the disk "Genealogy"'.  And it needs to be reformatted.  It's become a read only disk.  When I look in Disk Utility it shows all the partitions as "Mac OS Extended (Journaled)" EXCEPT for the one in question.  I also noticed that there are a lot of files with "date created" being the same date in 1969!  These files may be letters I've written or photo's I added to that partition within the last few years. 

I think I have to completely reformat the entire external hard drive to repair this, but I want to make sure.  Because it's going to be a major hassle backing it all up to another external (having to get one first) and then figuring out how to make the files that have turned "read only" in that one partition, back to their original state!  Does this sound right, that I have to reformat the entire external hard drive?  And how do I get the read-only files back to their original state.

Info:
iMac, Mac OS X (10.7.3)

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MacBook Pro :: External Hard Drive - Disk Utility Can't Repair Disk

Jun 27, 2014

I have a Seagate 1 TB Backup Plus Drive which was working perfectly fine until I plugged it into a USB hub. It detected it while in the hub and I was able to get files off of it, but when I ejected it from the hub and put it back into the USB slot on the computer it was not detected by finder. It shows up in the disk utility and I clicked verify and repair and it says:

Verify and Repair volume “Seagate Backup Plus Drive”
Checking file system
Volume repair complete.
Updating boot support partitions for the volume as required.

Disk Utility can’t repair this disk. Back up as many of your files as possible, reformat the disk, and restore your backed-up files. 

Is there any way to get this to work properly again? Or if not is there a way for me to recover my files on the external hard drive? 

I have a Macbook PRO late 2011 running OS X Mavericks.

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OS X :: External Disk Not Showing Up In Disk Utility - Erase Partition

Sep 7, 2009

Anyone knows why my external HD (USB disk connected to Airport extreme) does not show up in disk utility? (It sits on my desktop just fine and is fully functional) I' want to erase a partition but now i don't know how.

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OS X :: Disk Utility Screwed Up External USB Hard Disk

Aug 6, 2010

I have an external 500GB Freecom USB HDD with two Data partitions on it (FAT32 and NTFS). With a Windows tool, I made the two partitions smaller in order to free up some space (ca. 200GB) for an additional Mac OS Extended (Journaled) partition. This partition I wanted to create with the Mac OSX 10.6.4 Disk Utility. When I pluged in my USB HDD in my new iMac it mounted the two partitions, NTFS and EXT32 and the Disk Utility tool also showed the free (unpartitioned, almost 200GB) space on the HDD. Then, I chose to create a new Mac OS Extended (Journaled) partition and let the tool do it. ...which I probably shouldn't have done. Disk utility stopped and showed an error message saying that it cannot read the partitions anymore and that it needs to be closed. No partitions can be mounted anymore since then on this HDD. Here is the logfile entry of Disk Utility (unfortunately, it's in German):............

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MacBook Pro :: It Won't Mount External Disk

Jun 20, 2012

I have a new Macbook Pro with a retina display that won't mount a Toshiba Canvio 3.0 Plus external 1TB drive.  The drive shows up in the System Report under the USB tag. However Disk Utility does not see it. The drive shows up and is able to be erased and partitioned and mounted with another Macbook Pro running 10.6.8.  So, the drive itself is good. how to get the drive to mount on the new Macbook Pro? 

Info:
MacBook Pro (Retina, Mid 2012), Mac OS X (10.7.4)

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OS X Mavericks :: External Disk Mount Failed

Aug 28, 2014

my disk was not ejected properly, and when I inserted the usb cable,

the disk couldn't be mounted D: but I don't understand why the Time Machine partition still works well...?

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OS X :: Unable To Mount External Drive / Repair Disk Permissions?

May 20, 2009

I'm having a series of problems. First some intermittent audio problems with Garageband, then, then some external drives won't mount, and now I can't sync to my disk from the iMac. I've run Disk Utitilies a few times and when I do Verify Disk Permissions, it finds a list of things to fix, I then hit Repair Disk Permissions and it fixes them, and then hit Verify Disk, and it say the disk appears ok. When I do Verify Disk Permissions again though, it finds another long list of things to fix. Is this serious? What should my next step be? Should I reinstall the entire system?

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OS X :: External Hdd Not Showing Up Even In Disk Utility?

Aug 15, 2009

I've been having trouble with my Western Digital 160GB HD, its one of the MyPassport ones or what not. It used to work like a charm and had for a while but a couple of days ago it just stopped being able to be read or even recognized on Macs. I tried this laptop and another macbook pro and both would not show the HD on the desktop or even Disk Utility. When I open the Disk Utility when the ExHD is plugged in, I just get that loading circle and it will just do that indefinitely. Same thing with System Profiler as well.

I don't believe I damaged it in anyway, I hear no clicking and it seems to "boot" smoothly when it's plugged in, so would this mean its a corruption issue? I have been plugging this in to different Macs recently, (3 total) and one of which runs Leopard while the other two run Tiger. Would that cause the issue? (the reason I ask is that this all started after I had plugged it into the different OS.) I haven't tried to plug it into a PC yet, i'm going to do that today but I had tried doing the CMD + Option+ P + R reset till the second beep and I also did a hard reset by unplugging everything and waiting a bit then holding the start button down until it beeps.

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OS X :: Can't Format External Harddrive With Disk Utility

May 21, 2009

I'm trying to format my external harddrive with disk utility to Mac OS Extended (Journaled) but it keeps coming up with this error.

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OS X :: Burn ISO To USB Or External HDD With Disk Utility - Error 254

Jul 28, 2009

I am desperately trying to burn a ISO file to a USB and external HD but Disk Utility does not want to. Instead I get the error message "Could not validate source - error 254". So there must be a problem with the source which is the ISO file.

I already tried setting the Partition Map Scheme to both Master Boot Record and GUID Partition Table. I also formatted the drive to FAT and HFS+. I cannot find the cause of this error. It clearly looks like Disk Utility does not like burning ISOs to USBs or HDs.

However, I really really need to this since I cannot burn ISOs with my SuperDrive which is also a common problem [URL]with my MacBook Pro.

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OS X :: External Drive Disk Utility Erase?

Nov 7, 2009

i just erased my external hard drive through disk utility my accident. I had VERY important files and the 1tb was full.

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OS X :: External Hard Drives And Disk Utility

May 25, 2010

My external hard drive has been corrupted and the error message is telling me to reformat it. However, through all the research I have done to find out how, everything I've found has told me to use Disk Utility to just erase everything on the disk to do this. When I try to do this, it tells me that I can't erase anything because the disk cannot be unnmounted. What should I do?

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OS X :: External HDD Won't Back Up - Disk Utility Can't Repair

Aug 10, 2010

Last night I noticed that the time machine icon on the menu bar had a stop sign or something and when i clicked back up now it says it can not back up. I verified the volume and recommends a repair but it says it can not repair.

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Applications :: Disk Utility Freezing / External HDD Not Working?

Oct 11, 2010

I bought a WD My Passport 071A Media 1TB External Hard drive yesterday and was hoping to use it for my Mac and PC laptop. So I plugged it into my mac and it asked me if I wanted to use it for Time Machine and I said yes. It reformatted it and then I realised i wanted to partition it so I went to Disk Utility and split it into two partitions, one 50GB for Time Machine and another 950GB for my other storage, and made that FAT32 format. So I copied a song onto that partition and noticed it was copying really slow, so I copied the same song to the 50GB partition and my other 1TB non-portable hard drive which is also FAT32 and it was normal speed. So I thought I should try removing the 50GB partition and halfway through my computer froze and I had to reset it. Now my hard drive won't work in Mac or Windows and when I open Disk Utility, I see it there but when I click on partition, it freezes and I have to Force Quit the application.

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OS X :: Won't Work With External Iomega HD And Disk Utility Error

Dec 3, 2009

I bought a 1TB Iomega Prestige drive, it worked great for a few months. Started making loud clicking sounds. Iomega sent me a replacement drive (refurbished).

I am using it as my time machine backup in Leopard, so it was really just a matter of plugging it in, formating it with the OSX file system and setting it up for time machine.

When attempting to format from Disk Utility, I get an error (see screenshot).

(Additional info: I can access it and format it without any problems from Windows 7 based PC).

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OS X :: Won't Show External Drive / Visible In Disk Utility

Mar 11, 2010

My PowerBook G4 crashed and I need data from it. I already had bought an external drive and had begun loading some fotos and music. Now I'm at a friend's Mac, firewired and all, and the external drive (visible in the disk utility) isn't to be found.

I don't want to erase and reformat, obviously, ... can I drag it onto the desktop from the disk utility?

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