Intel Mac :: Erase Disk Shows Couldn't Unmount Disk
Jun 18, 2012Installing 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
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Intel Mac :: Erase Hard Drive Mac OS X (LION) "Couldn't Unmount Disk"
Apr 15, 2012I'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)
MacBook Pro :: Error - Couldn't Unmount Disk
Feb 12, 2012I 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)
Intel Mac :: Hdd Will Not Boot And Disk Utility Shows That It Couldn't Be Repaired
Feb 19, 2012I 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)
MacBook Pro :: Erase/Unmount Disk - Dock Utility?
Feb 26, 2012I 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
MacBook Pro :: Erase Corrupted SSD Internal Drive - Can't Unmount Disk
Dec 6, 2014I'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"
OS X Mavericks :: Repartition From Recovery Disk / Cannot Unmount Disk
Aug 29, 2014I 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)
OS X :: Contents Of This Disk Can't Be Changed Mac Couldn't Be Installed On This Disk
Oct 4, 2009I tried to install Snow Leopard.
I got the error, "The contents of this disk can't be changed. Mac OS X couldn't be installed on this disk."
I restarted, to boot from the startup disk, not the CD.
And now it just goes to the grey screen and shuts off.
Pressing "C" or "Opt - Command - P - R" or holding down the Power button for a while and then restarting, or trying "Command - V"..... none of it works.
The machine just goes to the grey screen, the wheel spins, and it turns off.
OS X :: Disk Utility Error / Disk Could Not Unmount
Apr 2, 2010i'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,
OS X :: External Disk Not Showing Up In Disk Utility - Erase Partition
Sep 7, 2009Anyone 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 RelatedOS X :: Zeroing Out Disk - Erase Disk Isn't Supposed To Be Completely Empty?
Aug 7, 2010I bought a used mac and when I erase the disk, afterwards it still shows 2 files and 2 folders on the disk taking up 40+mb of space. What is that? When you erase the disk isn't it supposed to be completely empty?
View 2 Replies View RelatedOS X V10.7 Lion :: Can't Partition Disk- "Error Cant Unmount Disk"
Jul 5, 2012Im 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)
Software :: Installed Disk Utility And Disk Repair - Shows Network Startup But No Hard Drive?
Feb 22, 2010I 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
View 1 Replies View RelatedOS X :: Formatting External HD - Could Not Unmount Disk
Aug 19, 2008When 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 RelatedMac Pro :: External Hard Disk Mounts Again After Unmount?
Apr 14, 2012My 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)
Applications :: No Disk Space After Failed Disk Utility Erase Free Space?
Dec 15, 2010I'm having a pretty serious problem. I attempted to erase the free space on my HD, as I do from time to time, except this time it appeared to hang/freeze at the end, when it gets to the part where it creates a temporary file. I waited for several minutes and it didn't move. I tried clicking the skip button, but that did nothing either, so I force quit Disk Utility.
The problem is, it left the disk at "Zero KB" of free space, effectively making my computer inoperable. I was in the process of studying for a huge exam tomorrow, and am currently flipping out.
If it matters, I'm on a Macbook Pro 2.33 GHz Core 2 Duo, running 10.4.
I really don't want to have to reinstall the OS and import the old files, but my real fear is that I will have to do a fresh install of the OS.
Software :: No Disk Space After Failed Disk Utility Erase Free Space
Dec 15, 2010I'm having a pretty serious problem. I attempted to erase the free space on my HD, as I do from time to time, except this time it appeared to hang/freeze at the end, when it gets to the part where it creates a temporary file. I waited for several minutes and it didn't move. I tried clicking the skip button, but that did nothing either, so I force quit Disk Utility.
The problem is, it left the disk at "Zero KB" of free space, effectively making my computer inoperable. I was in the process of studying for a huge exam tomorrow, and am currently flipping out. Any help would be greatly appreciated.
If it matters, I'm on a Macbook Pro 2.33 GHz Core 2 Duo, running 10.4.
I really don't want to have to reinstall the OS and import the old files, but my real fear is that I will have to do a fresh install of the OS.
Software :: Stop Disk From Unmount / Mount Automatically?
Apr 4, 2010I 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 RelatedOS X Mavericks :: Unable To Repair Or Unmount Disk To Reformat
Jun 20, 2014I 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 RelatedIntel Mac :: Shows Startup Disk Almost Full - Few Apps Installed
Jun 22, 2012I have an iMac that is less than a year old and I have very few applications installed other than what comes on it. I recently received a message that my startup disk was almost full. I keep all of my media on an external drive, have an apple time machine that stores the backups. I purchased the Space Gremlin and there is nothing on the hard drive that shows it's taking up that much space. The 500 GB hard drive shows only 11 GB free.
Info:
iMac (21.5-inch Mid 2011), Mac OS X (10.7.4)
OS X :: Couldn't Eject External, Now Disk Not Mounting?
Aug 15, 2009I know this has been disccused ad nausium many places, but in reading 100s of posts Ive just confused myself and was hoping someone could help me make sense of all I've heard.I have a ibook g4 and use a WD 500gb external hard drive to keep all my music/pictures etc.Last night when I was moving files around (I dont think it was actually in the process of transferring files when this occurred, but there is a slight chance it was) I accidently hit enter instead of shift which told my computer to open all of the 1000+ folders that I had selected (DOH!) after working for an hour it seemed to be all frozen so with concern I turned the computer off and restarted.Suprise suprise, my external will no longer mount. - Disk Utility recognizes it but says there was an error on exit.Tim
View 4 Replies View RelatedHardware :: Unable To Reapair External Disk / Unmount Error
Jun 22, 2008I 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.
PowerPC :: Hard Drive Not Working / Repair Volume Failed Could Not Unmount Disk
Jul 17, 2009So 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?
IMac :: Start Up Disk Full - Couldn't Save ITunes Library?
Aug 24, 2010I keep getting a pop up saying my start up disk is almost full, or that my iTunes library couldn't be saved, but I've still got a quarter of hard drive available on my new iMac. OmniDiskSweeper shows that most of the memory goes to my iTunes Media and Pictures/videos, but that shows just 61GB of hard drive used for Users. What could be using my hard drive space that doesn't show in OmniDiskSweeper?
View 1 Replies View RelatedMacBook :: Disk Error Full - Couldn't Save And Change Saving Location
Feb 1, 2009Tonight i was working on a report in MS Office 08, and it was all fine and what not until one point i got some error message saying that the disk was full and i couldnt save it and to change the saving location. Anything this is on the main drive where i have ~40gb's left. So i put my USB Drive in to save it on that and it gave me the same error it wouldnt save on anything it just keep saying Disk Full.. Does anyone know what that is? Clearly its some sort of error/bug as i restarted the macbook and downloaded a picture and saved it on my desktop with no problems after the reboot. Im running mac osx 10.5.6
View 6 Replies View RelatedIntel Mac :: Unable To "Erase" Using Disk Utility
Jun 9, 2012My Time Machine quit BU for over 10 days and then it started to BU whole computer like it was an initial BU. Previously it used 1.5TB of 2TBHD so tried to BU everything again. I wasn't able to erase HD using Disk Utility so I changed the drive to a regular HD in Time Machine preferences and deleted data to trash. Tried to Erase in Disk Utility and it says disk is unformatted and stops utility. How do I erase this HD?
Info:Mac OS X (10.7.2), Parallels, Win7, FoxFire, iPhone3GS
OS X :: Cannot Erase DVD's In Disk Utility
Jan 28, 2008I am having trouble erasing DVD+RW discs. When I insert a used disc and try to erase it in Disk Utility, the process seems to complete almost immediately, ending with OS X asking me if I want to mount the inserted blank disc in Finder. However, if I eject the disc and put it back in, everything is still on there. (detail: When erasing, there is usually a short interval where a striped progress bar is shown, after which a "normal" progress bar is slowly filled as the disc is erased. However, for me only the striped progress bar is shown--the "normal" progress bar is skipped--and then OS X says erasing is done.) If instead of ejecting the disc I choose to go ahead and burn something as if Disk Utility has actually erased the disc, I get a laser power calibration error.
View 4 Replies View RelatedIntel Mac :: Grey Screen, File With Question Mark... There Is Already A Disk In The Disk Drive?
Feb 11, 2012I have read most things to do with the grey screen and the screen with the question mark, and it's obvious I have to put some sort of disks in, but there is already a disk stuck in the drive?
Info:
iMac
OS X V10.6 Snow Leopard :: Time Machine "could Not Unmount Disk"
Jul 1, 2012I have a Buffalo Ministation 1T (as my portable hardrive), been using it for about 3 months and works perfect, nothing wrong with it at all and time machine formatted it straight away. I recently got the Samsung G3 Station 2T (as a back up to the buffalo) and Time machine says "There was an error erasing the Time Machine backup disk SAMSUN. Could Not Unmount Disk". Then in disk utility when i click erase from (MS - DOS (FAT) To (Mac OS Extended (Journaled)) it says "Volume Erase failed with the error: Could Not Unmount Disk".
Info:MacBookPro, Mac OS X (10.6.8)
IMac (Intel) :: Startup Disk Could Not Gather Enough Information On Selected Disk
Jul 1, 2014Every time I try to restart my computer on my Hard Drive I get this message "Startup disk could not gather enough information on the selected disk". As of right now I am running my whole computer off of a 16GB flash drive that is quickly running out of memory. How do I fix my Hard Drive without losing all 150GB worth of data. I am running off of OS X 10.6.8 and have another iMac that is working fine.
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