OS X V10.7 Lion :: Can't Partition Disk- "Error Cant Unmount Disk"

Jul 5, 2012

Im trying to partition  my Macintosh HD and install FCP X on the new partition, because I want to still use my Final Cut Studio when needed. I want to install MAC OS on the new partition so I can use it as a start up disk as well. I followed the instructions as directed.

I restarted my computer and held the command and "R" key. In the disk utility I selected my HD and selected 2 partitions. I named them and entered the size and selected GUID as scheme. but when i hit apply i get " Failed, cant unmount disk" how I can successfully partition my HD.

Info:
Mac Pro, Mac OS X (10.7.3)

View 1 Replies


ADVERTISEMENT

OS X :: Disk Utility Error / Disk Could Not Unmount

Apr 2, 2010

i'm trying to format a spare external, it's currently formatted to ms-dos for back up dutys on my PS3 but i want to change it to mac os extended

i've just plugged the drive in ( USB ), nothings running on it, or open on the computer from the drive, but disk utility wont erase it, i've checked permission and everythings fine but it just keeps giving me this error

google and apple fail, only thing i can find linked to it refers to operating systems running on the drive,

View 2 Replies View Related

MacBook Pro :: Error - Couldn't Unmount Disk

Feb 12, 2012

I want to erase the hard disk. Holding the Option key when restarting the macbook, and enter the Recovery HD, selecting the Disk Utility. Click the hard disk name, and select Erase tab. Click the Erase button, a message displayed: Disk Erase failed. Disk Erase failed with the error:Couldn't unmount disk.

Info:
MacBook Pro, Mac OS X (10.7.3)

View 3 Replies View Related

Windows On Mac :: Partition Error - Back Up Disk And Use Disk Utility To Format

Oct 9, 2010

I had windows vista installed but suddenly the audio decided to become faulty, after spending a day trying to fix it i realized I have a windows 7 install disc so i might as well just replace vista with windows 7. I didnt take care of vista or ever register it so it became quite a task to upgrade so i just deleted the partition and went to create a new one and just do a full install of windows 7.

I made the partition but the wrong format, so i removed it through boot camp assistant and created another, except now it keeps giving me the "back up the disk and use disk utility to format it as a single Mac OS Extended (Journaled) volume. Restore your information to the disk and try using boot camp assistant again" Now, I'd love to do this, except I have no idea what I'm doing and WHY this error has occured. After becoming frustrated I switched from my imac to my macbook pro and received the same error when trying to create a partition. So any help on exactly what I need to do would be a HUGE help. I only use windows for music production (I know, seems backwards, but I use Sony Acid and FL Studio so I'm stuck with Windows)

View 8 Replies View Related

Hardware :: Unable To Reapair External Disk / Unmount Error

Jun 22, 2008

I have a Western Digital 500gb external hard drive, with 2 partitions, 'KAINARC' and 'JUNGLEMAC', connected to my Intelmac (Tiger 10.4.11 via my firewire, i have connected via usb but the problem is still the same). I may have shut down the drive improperly to cause this situation.

KAINARC now appears on my desktop, but the partition of JUNGLEMAC does not. I go to disk utility and both partitions are visable, KAINARC is mounted but JUNGLEMAC is not. I cannot mount JUNGLEMAC.

When i try to verify and repair the partition I get the message:

Verify and Repair disk �JUNGLEMAC�
Error: The underlying task reported failure on exit

1 non HFS volume checked
1 volume could not be repaired because of an error

So I try to verify and repair the partition KAINARC but get this message:

Verify and Repair disk �KAINARC�
Repairing disk failed with error Could not unmount disk



So I have opened diskwarrior (unbelievably long time to start up and scan disks) in the hope of fixing the hard drive, but when i try to repair I get the error message 'unable to unmount KAINARC'.

I have tried other repair/recover programs but get the same message: 'Could not unmount disk KAINARC'. Im asuming that to fix the hard drive it has to be able to unmount KAINARC.

View 7 Replies View Related

Intel Mac :: Erase Disk Shows Couldn't Unmount Disk

Jun 18, 2012

Installing Imac back to factory settings, erase disk shows could't unmount disk how to solve

Info:
MacBook Pro, Mac OS X (10.7.4), I bought a usb stick with the OS Xa

View 1 Replies View Related

OS X Mavericks :: Repartition From Recovery Disk / Cannot Unmount Disk

Aug 29, 2014

I wanted to do a clean install and repartition my iMac running 10.8.  It has 2 partitions. I booted from the recovery disk, went to Disk Utility and erased the two partitions. However, when I tried to change to a single partition got the error message "cannot unmount disk." 

Info:
iMac, OS X Mavericks (10.9.4)

View 4 Replies View Related

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)

View 3 Replies View Related

OS X V10.7 Lion :: How To Use Disk Utility To Repair Encrypted Disk Partition

Apr 6, 2012

I have run the Disk Utility verify function against my system partition. It tells me there are minor issues that need fixing up and I should run the repair disk function, by booting using Command-R and using the Disk Utility to repair the drive.Problem is, when I boot using Command-R and select Disk Utility the partition is shown greyed out and the Verify and Repair options do not work.I think this could be because the partition is encrypted. The utility does not offer me the chance to unlock the partition with my passphrase.How can I repair the filesystem errors on this partition?

View 2 Replies View Related

OS X V10.7 Lion :: Error With Disk Utility When Repairing Disk

Jun 26, 2012

I just got my computer yesterday and when running the "repair disk" function, I already get an error! Since I used migration assistant to move everything off my old mac to my new mac, I'm not interested in reinstalling the whole OS and transffering all my files again. This is a new computer, and shouldn't have this problem this early. I also get the same result when starting up in the recovery partition. How do I resolve this?

Info:
MacBook Pro with Retina display, Mac OS X (10.7.4)

View 2 Replies View Related

OS X :: Disk Utility - Erasing Partition Error

Nov 21, 2008

I installed Ubuntu on my iMac, and it made 2 new partitions: DISK0S3 and Linux Swap. Here's what my disk utlity looks like: When I try to remove Linux Swap, it says that the partition (map is too small. When I try to remove DISK0S3, nothing happens and it keeps running forever before I press +Q to quit.

View 1 Replies View Related

OS X :: BootCamp & Disk Utility - Partition Error

Jun 7, 2010

I just restore my Mac OS to a single partition and then I tried re-partitioning but it's giving me an error.
I've tried several times, tried using different sizes every time. My HD's capacity is 250GB, and I've got 108.95GB free. So I am sure that making a new partition of 35 - 40 GB is not a big deal. I also tried using Disk Utility, both from the Mac OS install disc and while using the Mac OS itself, but it keeps giving me this error. I do not want to format my Macintosh HD's partition because I don't have an external HDD on me at the moment so I will not be able to back up. I have a lot of important data that can not be deleted.

View 3 Replies View Related

Laptops :: Startup Disk Error - Cannot Boot To Mac Partition

Apr 17, 2010

I partitioned windows XP onto my Mac HD a few days ago. It worked beautifully until last night. Whenever I booted to it, it stuck at the welcome screen for 10 minutes, and was really buggy upon startup. This morning, my MacBook Pro (bought in August '09) upon turning on automatically boots to windows XP. No amount of holding "c" or "Alt" will bring up rEFIt or boot camp selection pane. And the kicker is, the windows XP partition is completely corrupted.

Here's what happens now:
1) Turn Macbook Pro on, hold down "c" or "Alt"
2) White background for ~ten minutes, nothing happens
3) After a long time, boots to black screen and says "Startup Disk Error... Press Ctrl+Alt+Del to restart.

I'm pretty sure its trying to boot to Windows XP partition, because Ctrl+Alt+Del is not a Mac OS X command... But I can't boot to my Mac OS X partition.

View 7 Replies View Related

Windows On Mac :: BootCamp Partition Disk Process Stuck With Error

Apr 22, 2009

I have an alu iMac with a 500GB HDD. There is about 200GB free. Every time I run the Bootcamp Assistant, choose a Windows partition (doesn't matter what size), it sits with the progress bar spinning for ages before it gives me the error "Disk could not be partitioned as some files cannot be moved. Please reformat the disk and try again". There is no way I can back the disk up, reformat, reinstall and re-update everything. No other apps are running when I run the Bootcamp Assistant.

View 9 Replies View Related

MacBook :: BootCamp Disk Space Error - OS Partition Corrupt

Mar 28, 2012

My Finder says that I have about 50GB free, Disk Utility says I have about 20GB free, and Boot Camp says I have less than 10GB free. I ran a Disk Verify in my Mac OS Partition, it says the OS disk is corrupt. I went to the Recovery Partition, it says everything is fine. What do I do to fix these issues?

Info:
MacBook, Mac OS X (10.7.3)

View 1 Replies View Related

Intel Mac :: Erase Hard Drive Mac OS X (LION) "Couldn't Unmount Disk"

Apr 15, 2012

I've just transferred my data to a new computer and now need to erase the hard drive on my old one.. I've tried Disk Utility, increased the security, and tried 'erase' but I keep getting an error message "couldn't unmount disk". I've gone into Partitions and tried deleting the HD there as well but I get the same message. I just want to get the computer securely wiped and would like to keep Lion as the operating system. 

Info:
Macbook 2GB ram, Mac OS X (10.4.9)

View 4 Replies View Related

OS X :: Create Another Partition External Drive Using Disk Utility - HPFS + Error

Apr 28, 2010

I have a Lacie 1TB external drive. I'm trying to create another partition on it using Disk Utility so that I can use one of the partitions for Time Machine. When I go to add another partition, or even just resize the existing one, I get an error saying drive must be HPFS+ with Journaling enabled. It is. I've seen reference to this error in searches, but have not found a solution. Is there a fix for this, or another tool that I can use to re-partition my drive without wiping out existing partition? I have about 450GB worth of data on the drive that I might be able to store somewhere else temporarily, I would just prefer not to have to go through that....

View 1 Replies View Related

OS X :: Formatting External HD - Could Not Unmount Disk

Aug 19, 2008

When I try to format my Western Digital "MyBook" external drive, I get an error. It says "could not unmount the disk." What does this mean, and how do I fix it? Also, what's the difference between Mac OS Extended (Journaled) and not journaled?

View 8 Replies View Related

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.

View 4 Replies View Related

Mac Pro :: External Hard Disk Mounts Again After Unmount?

Apr 14, 2012

My Mac Pro [with 4 internal disks, 2 External Disks (Sata Raid 0), and several external FireWire disks and a Voyager disk station] has a little problem with letting externals go Since a few weeks I have a problem with unmounting my externals. After unmount, the unmounted disk will mount again immediately.No time to disconnect cables and/or power. Hinders disk management, backup, and simple disconnecting disks. It only happens with disks (FireWire 400/800/ SATA and USB alike). USB sticks work fine.

Info:
Mac Pro, Mac OS X (10.7.3)

View 1 Replies View Related

Mac Pro :: Scratch Disk Partition And Size With Disk Utility

Sep 8, 2010

My new 2010 hexacore Mac will have 24G memory, an OWC Extreme Pro 120G SSD (positioned in the lower optical bay) and four 2TB WD RE4 drives. I'll use my old Synology 209 NAS (two 1TB WD Green Raid 1 drives) for TM backups over 1000Mbps Ethernet. Yes, I'll need to upgrade to a larger NAS very soon. This will be my first Mac Pro (have MBPs and iMac) and will be used for web design and development (mostly Adobe CS5 products).

The SSD will be used for boot and application files. I plan to use Disk Utility to create a 1+0 Raid array for data files. For a Scratch disk, should I:
1) create a partition on the 1+0 Raid Array for Scratch
2) partition a chunk of the SSD for Scratch
3) attach a spare external 2.5" WD drive via Firewire 800 for Scratch

Based on my reading, it seems that option 1 makes the most sense but I'm not entirely sure if you can partition a 1+0 array with Disk Utility. I'm pretty sure option 3 is quite silly but wanted to toss out the idea. Lastly, are there any generic recommendations on scratch volume sizing?

View 14 Replies View Related

OS X :: Disk Utility - Adding Partition Without Erasing Disk?

Nov 20, 2009

I have a 640GB external USB hard drive that I use for time machine currently. I would like to go in and add a partition to load movies to and plug it into my PS3. Can I use disk utility to create a new partition without erasing the stuff already on the disk?

And then is it possible to format a partition larger than 32GB as FAT?

View 3 Replies View Related

Software :: Stop Disk From Unmount / Mount Automatically?

Apr 4, 2010

I just bought a Seagate Expansion drive, and it has no power button so when it has been plugged in and not in use for a while it unmounts, and then a minute or two later it auto mounts, is there any way to stop it from unmounting and automounting automatically? I would like to control it myself if its possible (id also prefer not to pull the plug each time i want to shut it off).

View 1 Replies View Related

MacBook Pro :: Erase/Unmount Disk - Dock Utility?

Feb 26, 2012

I am trying to reinstall Lion on my macbook pro, but every time the hdd shows up as 'locked' and when I attempt to format it, it gives me a "volume erase failed with the error - cannot unmount disk" message. It appears as if some files withing the disk are still running but I have no way of quitting them-knowingly. I can specify more if this seems to vague.

Info:
MacBook Pro

View 5 Replies View Related

OS X Mavericks :: Unable To Repair Or Unmount Disk To Reformat

Jun 20, 2014

I have a Macbook pro 17" (2011) running Mavericks with a Crucial 960Gb SSD and a 750Gb WDC in the optical bay. My ssd is divided into 710 Gb to OS X and 182 Gb to Windows 7 Bootcamp. All was well until the other day when the OS X partition failed to boot. I got the grey screen and the very slow progress bar which after 15  minutes powered the machine off. The Bootcamp partion continues to work without issues. I booted from an install disk and ran disk utility. The OS X partition appears greyed out on the left panel. I attempt a repair disk and after a 15  minute delay it says it is unable to repair the last action being "updating boot support partitions for the volume as required". Its all backed up regularly on time machine but when I boot an install usb and attempt to restore from time machine, the OSX disk does not appear as an option. I go back into disk utility and attemp to erase/repartition the disk to start a new install but it refuses to unmount. I appear to be running out of options,

View 2 Replies View Related

MacBook Pro :: Erase Corrupted SSD Internal Drive - Can't Unmount Disk

Dec 6, 2014

I'm trying to erase my SSD internal drive that is corrupted software (Yosemite).I'm booting from an external with 20GB Yosemite OS & 480GB that contains files I've dragged off the internal SSD.I'm getting the error:Volume Erase failed with the error:Couldn’t unmount disk.How can I get around this?

Info:
MacBook Pro, OS X Yosemite (10.10), 13"

View 2 Replies View Related

MacBook Pro :: Disk FULL Error When Export Movie In IMovie Or Burn Disk In IDVD

Nov 25, 2010

Every time I try to export a movie in iMovie or burn a disk in iDVD an error message pops up and says that my startup disk is full. So I bought an external hard drive and backed up my mac using Time Machine. Now I want to delete everything off my mac's internal Hard Drive and use my external hard drive so I can empty my disk. Does this make sense? If so will you please tell me how to do so.

View 6 Replies View Related

OS X :: Disk Utility To Verify Disk Ends With Error?

May 10, 2010

I'm running OSX 10.4.11 on a 12" PowerBook 1.5 GHz with 1.25 GB of RAM and an 80 GB HD.

When I run the disk Utility to Verify Disk, it ends with the message, "Error: The underlying task reported failure on exit." This happens if I run the Disk Utility from the hard drive, from the OSX installation disk or from an external hard drive.

The Repair Drive button is always grayed out no matter where I am running the disk Utility from, too.

So far, I haven't had any other unusual things with the operation, but I'm concerned that this could be an early warning of problems to come.

Has anyone else had this problem or have a clue?

I have cloned the entire hard drive onto an external drive with Carbon Copy Cloner. I know PPC systems won't boot from a USB drive, but I was considering booting from the install disk, re-formatting the drive from there and then re-installing from the external by running CCC from there. I hope someone will have a direct solution to repairing the drive without doing all of that.

View 2 Replies View Related

PowerPC :: Hard Drive Not Working / Repair Volume Failed Could Not Unmount Disk

Jul 17, 2009

So so annoyed right now. Today my 12" G4 powerbook started to become slow, lots of spinning wheel, delayed menus etc. I checked file permissions, rebooted and it just kept on getting slower. Eventually it wouldn't get past the white apple screen.

I booted off the Tiger DVD and ran disk utility to fix and repair permissions again. It wouldn't let me repair the disk as I kept getting this error:

'Repair volume failed with error could not unmount disk'

I had to reboot again, and eventually my hard disk no longer appears in Disk Utility. I tried to boot into safe mode and get this:

'"I0ATAController device blocking bus
I0ATAController device blocking bus
I0ATAController device blocking bus
I0ATAController device blocking bus
I0ATAController device blocking bus"

So now I pretty much can't do anything with it. Failed Hard Drive?

View 5 Replies View Related

OS X V10.7 Lion :: Disk Utility Partition Tool Shows That "This Partition Cannot Be Modified"?

May 6, 2012

I have a MacBook Air with solid state hard drive. The Disk Utility partition tool shows that "This partition cannot be modified". What can I do?

Info:
MacBook Air, Mac OS X (10.6.8), Total Capacity : 121.33 GB (121,332

View 13 Replies View Related







Copyrights 2005-15 www.BigResource.com, All rights reserved