Help needed with delete of bootcamp partition, error message 'Couldn't unmount disk'

Hello all
Sorry if this issue has been repeated elsewhere, I did search but there wasn't a discussion relating to my specific issue.
When we bought the iMac a couple of years ago, my husband partitioned the hard drive to run Windows via Bootcamp. Having got used to the Mac and experiencing the frustration between having to reboot to access each partition I have decided to restore the Mac to factory settings and install Parallels 8 so I can continue to use Office and Coreldraw).
So having backed up all of my files, I started the Mac up holding the 'Alt' key and then loaded the Recovery HD mode followed by Disk Utility. I then selected Bootcamp and erased all data from the partition. [Note: there are 2 files left which it won't allow me to erase through this method]
I then selected the main drive and the tab 'Partition', from the layout I then selected Bootcamp and clicked the minus button. I get the message confirming which partition I am about to delete and hit remove. I then get the error message 'Partition failed: couldn't unmount disk'.
I would be very grateful for some help please? I am not the best techy person but happy to give anything a go.
Just to mention there is nothing left on the Mac that I want to keep, therefore if there is an easier way than having to delete the partition then happy to hear it.
Thanks
Tara

Hello Tara,
Are you using Filevault?
https://kimmo.suominen.com/blog/2013/03/file-vault-volumes-cannot-be-resized/
Also see the last few posts here...
https://discussions.apple.com/thread/3894449?start=15&tstart=0

Similar Messages

Help needed with Snow Leopard/Lion partitions

I'm still using Snow Leopard but will be installing Lion soon. First I want to make sure I don't lose the few Rosetta/PPC apps that I still need.
I've read several threads about partitioning to create a dual boot for both Lion and SL.
What I want to do is this, and I'd appreciate a bit of help/guidance:-
I have two external FW HDs, daisychained. Both of them have two partitions.
External Drive A (500Gb) has one major partition (let's call it (1) ) that I want to leave for backing up everything, which I already do using CarbonCopyCloner. (I don't use Time Machine).
The other partition (2) is for specific files. When I get round to installing Lion, I will continue to backup on this HD, so the old PPC apps on it presumably won't work.
External Drive B (300 Gb) has one partition (3) that I use for backing up music files, and it won't matter what, if anything, Lion changes in them.
The other partition (4) on this drive is free and has about 30 Gb free. What I want to do is use my Snow Leopard Install disc and install SL onto this partition (4), including Rosetta, make it bootable and then add the few PPC apps that I need into it.
AFTER all that, I'm going to Install Lion onto my iMac (with the extarnals unplugged).
So in theory, I can boot either into the iMac drive itself for Lion, or partition (4) for Snow Leopard.
Questions-
Does this look like it'll work?
Does it matter that I haven't installed Lion before creating the SL Boot in (4)? Seems that several people have had problems installing Lion BEFORE trying to rescue PPC apps.
When backing up my music files from a Lion environment to (3), does it matter that the drive shares a SL partition (4)?

10.6 Ships with Symbol.ttf rather than Symbol.dfont. It's in /System/Library/Fonts/
If you absolutely need the .dfont you could pull it off an old system. I have one handy and can sent you a link, but the ttf is probably better to use. See attached for version difference between ttf, dfont and the windows SYMBOL.TTF.
The new one has ~30 more characters added to it and matches the windows version.

Help needed with DELETING COLLECTIONS

Hi,
I need help with the following.
http://download.oracle.com/docs/cd/B14117_01/appdev.101/b10992/mvl_advanc.htm#sthref1337
According to the above :
Deleting All Collections for the Current Application
Use the method DELETE_ALL_COLLECTIONS to delete all collections defined in the current application. For example:
HTMLDB_COLLECTION.DELETE_ALL_COLLECTIONS;
Deleting All Collections in the Current Session
Use the method DELETE_ALL_COLLECTIONS_SESSION to delete all collections defined in the current session. For example:
HTMLDB_COLLECTION.DELETE_ALL_COLLECTIONS_SESSION;
Does the DELETE_ALL_COLLECTIONS delete all current collections for a specific user or does it mean delete all collections in an application irrespective of who the users are.
eg.(a) if I had 20 users logged on and they each have a collection called 'Collection1' would DELETE_ALL_COLLECTIONS remove collection1 from all 20 users or just 1.
eg.(b)if I had a user that had 3 collections for the current session and I wanted to delete all three in the current session do I use DELETE_ALL_COLLECTIONS or DELETE_ALL_COLLECTIONS_SESSION?
Hopefully some one can assist me with this query.

Hi, you could test this yourself. Run 2 sessions, populate a collection of the same name from each session, then delete all collections from session 1. Then, check to see if the collection still exists in session 2. Cheers.

Help needed with deleted files

Hi all
Still a novice, though have been using Aperture successfully for a few weeks now...
I have somehow (and I am still trying to go back and work out how) managed to delete a whole named project with all the photos in it.
I went from one project to another, in order to continue editing, but when I used the control back arrow and delete button to delete 1 photo that was highlighted, it deleted all the photos and the project (or so it seems).
Where can it be, is it lost for ever, and if it isn't how can I retrieve it?
Thanks
Ruth

Any other ideas? Still can't find them.....reading the manual to see if that gives me any more clues too!
Despairing now!!
Please help!

Partition error. couldn't unmount disk

I new buy mac mini 2012. I have osx mountain lion.
When I create a partition get error "Partition Error". "Couldn't unmount disk"
I haven't OS now. Because I removed its.
I can't create partition under 500 GB HDD.
And I'cant see Recover HD.
My disk Utility Screen:
When I create partition I get below error pop-up message.
When I browse for Image I see Recover HD.
finally. "diskutil list" typing in terminal list disks.
Please

My macbook air (OS x lion ) hard disk got crashed. now it starts with a grey screen and MAC OS X utilities. in the disk utility, the hard disk icon became inactive. when i erased the disk it became active again but i am still not able to partition it. it showed -- "Partition Error". "Couldn't unmount disk". now the disk icon became inactive again. when i click on mount it becomes active again but partioning is not done after many attempts.
another problem: - when it I click to proceed with the installation (still unpartitioned) it verifies my macbook's eligibility and says that the machine information is not with apple. below are the screenshots.
is there any internet issue, i got connected on my institute's wi-fi (excellent speed- 54mbps)

External Drive Problem...Error "Couldn't Unmount Disk"

I have my Aperture Library on a 2TB External Seagate Drive, so that I can use it with both my iMac and MBP. It's been running really slowly lately, so I ran Disk Utility on it to Verify and Repair, and just got the error message "Couldn't Unmount Disk". Help, please! I have backup vaults, but they are months old because this has been so slow and I just got lazy. Ouch.
Sue

Hi Sue,
I would of course try this. Do you have all pictures organized by Aperture or referenced to from some Ext HDs?
If referenced, I would think of trying to organize the Library new.
The workaround suggestion: Copy the Aperture Library to one of your Macs
and run it from there (as you already asked). If it works fine, take another Ext.HD (maybe you are asked
by Aperture to repair because of any Inconsistencies, this takes most of the times quite long, but maybe helps),
and take care as before.
I wouldn't recommend Seagate HD's, but as always that's easy to tell afterwards.
It seems like the EXT HD has a problem and hopefully not Aperture.
This all is the reason for me, why I changed all pictures into referenced pictures, do my work, give names with Aperture, but keep the order in my hand. Back Up is of course as well in my responsability.
I've had always a bad feeling about letting something do the most important work, without knowing and take
care.
Uwe

Problem with partition after deleting a bootcamp partition

Hi everyone !
First, excuse my english, I'm from France.
This morning, I've deleted the bootcamp partition I had created weeks ago. But when I've tried to extend the principal partition on the empty space left by bootcamp, the Disk Utilitaire says : "Partition failed : impossible to modify the partition map because the verification of the files system failed."
I tried to extend the partition with the hided partition that we use when we can't boot on the main partition (I don't know how to say its name in english).
If someone have a solution, it would be cool !

Back everything up (preferably twice, 3 times for the really paranoid). I would use Carbon Copy Cloner and/or SuperDuper to make bootable clones to external disks.
Test the clone(s) by booting from them.
Repartition the boot disk the way you want it.
Restore your cloned system from the external disk.

Hello, I need help to retrieve deleted information to partition an external hard drive. What should I do?

Hello, I need help to retrieve deleted information to partition an external hard drive. What should I do?

I'm not about the question, and giving you the right answer requires me to ask a few more questions.
Do you want to retrieve deleted information for future usage, or to completely delete a partition? The latter is straightforward: simply erase the partition. The former is more complicated: it's very difficult, even using available commercial software, to recover deleted information. If the data is important, you may want to contact a professional like DriveSavers. It won't be cheap.

I have an iMac 5.1 with Mac OSX 10.6.8 and 2 GB memory and an L2 cache of 4 GB. lately I have been receiving error messages of " start up disk almost full; please delete files." is the start up disk the same thing as the hard drive?

I have an iMac 5.1 with Mac OSX 10.6.8 and 2 GB memory and an L2 cache of 4 GB. lately I have been receiving error messages of " start up disk almost full; please delete files." is the start up disk the same thing as the hard drive? I opened the hard drive and from the column on the left of the menu I've selected "search for" and under that " all images" then "all documents" I've deleted a few files from each. Are documents and images that I have deleted from here also deleted from the folders on my desktop?

You should never, EVER let a conputer hard drive get completely full, EVER!
With Macs and OS X, you shouldn't let the hard drive get below 15 GBs or less of free data space.
If it does, it's time for some hard drive housecleaning.
Follow some of my tips for cleaning out, deleting and archiving data from your Mac's internal hard drive.
Have you emptied your iMac's Trash icon in the Dock?
If you use iPhoto, iPhoto has its own trash that needs to be emptied, also.
If you store images in other locations other than iPhoto, then you will have to weed through these to determine what to archive and what to delete.
If you use Apple Mail app, Apple Mail also has its own trash area that needs to be emptied, too!
Delete any old or no longer needed emails and/or archive to disc, flash drives or external hard drive, older emails you want to save.
Delete any other mail in your Junk folders. Also, look through your Sent Mail to see if there is anything that can be deleted.
Other things you can do to gain space.
Once you have around 15 GBs regained, do a search, download and install OmniDisk Sweeper.
This app will help you locate files that you can move/archive and/or delete from your system.
STAY AWAY FROM DELETING ANY FILES FROM OS X SYSTEM FOLDER!
Look through your Documents folder and delete any type of old useless type files like "Read Me" type files.
Again, archive to disc, flash drives, ext. hard drives or delete any old documents you no longer use or immediately need.
Look in your Applications folder, if you have applications you haven't used in a long time, if the app doesn't have a dedicated uninstaller, then you can simply drag it into the OS X Trash icon. IF the application has an uninstaller app, then use it to completely delete the app from your Mac.
Download an app called OnyX for your version of OS X.
When you install and launch it, let it do its initial automatic tests, then go to the cleaning and maintenance tabs and run the maintenance tabs that let OnyX clean out all web browser cache files, web browser histories, system cache files, delete old error log files.
Typically, iTunes and iPhoto libraries are the biggest users of HD space.
move these files/data off of your internal drive to the external hard drive and deleted off of the internal hard drive.
If you have any other large folders of personal data or projects, these should be archived or moved, also, to the optical discs, flash drives or external hard drive and then either archived to disc and/or deleted off your internal hard drive.
Good Luck!

Help needed with itunes

help needed with itunes please tryed to move my itunes libary to my external hard drive itunes move ok and runs fin but i have none of my music or apps or anything all my stuff is in the itunes folder on my external hard drive but there is nothing on ituns how do i get it back help,please

(Make sure the Music (top left) library is selected before beginning this.)
If you have bad song links in your library, hilite them and hit the delete button. Then locate the folder(s) where your music is located and drag and drop into the large library window in iTunes ( where your tracks show up). This will force the tunes into iTunes. Before you start, check your preferences in iTunes specifically under the"Advanced" tab, general settings. I prefer that the 1st 2 boxes are unchecked. (Keep iTunes Music folder organized & Copy files to iTunes Music folder when adding to library). They are designed to let iTunes manage your library. I prefer to manage it myself. Suit yourself. If there is a way for iTunes to restore broken links other than locating one song at a time I haven't found it yet. (I wish Apple would fix this, as I have used that feature in other apps.) This is the way I do it and I have approx. 25,000 songs and podcasts and videos at present. Hope this helps.

Urgent help needed with un-removable junk mail that froze Mail!!

Urgent help needed with un-removable junk mail that froze Mail?
I had 7 junk mails come in this morning, 5 went straight to junk and 2 more I junked.
When I clicked on the Junk folder to empty it, it froze Mail and I can't click on anything, I had to force quit Mail and re-open it. When it re-opens the Junk folder is selected and it is froze, I can't do anything.
I repaired permissions, it did nothing.
I re-booted my computer, on opening Mail the In folder was selected, when I selected Junk, again, it locks up Mail and I can't select them to delete them?
Anyone know how I can delete these Junk mails from my Junk folder without having to open Mail to do it as it would appear this will be the only solution to the problem.

Hi Nigel
If you hold the Shift key when opening the mail app, it will start up without any folders selected & no emails showing. Hopefully this will enable you to start Mail ok.
Then from the Mail menus - choose Mailbox-Erase Junk Mail . The problem mail should now be in the trash. If there's nothing you want to retain from the Trash, you should now choose Mailbox- Erase Deleted Messages....
If you need to double-check the Trash for anything you might want to retain, then view the Trash folder first, before using Erase Junk Mail & move anything you wish to keep to another folder.
The shift key starts Mail in a sort of Safe mode.

Help! Win 8.1 Bootcamp partition vanished

Hi all
My Windows 8.1 Bootcamp partition has vanished.
Last night I was playing a Windows game, all was well and I shutdown the machine at the end of the night. This morning I got up, powered up the Mac Pro and noticed it was stuck in an OSX reboot cycle. I held the alt key down and the 3 boot partitions popped up OSX, Recovery, Windows 8. I selected Recovery and ran the Disk Utility, "Check" disk tool. It reported that the EFI was bad so I clicked on Repair. It then said it couldn't repair it. I rebooted again and this time there are now only two options, OSX and Recovery. I clicked OSX which loaded fine. I have no idea how this happened when the machine was off over night and fine the night before in both Windows and OSX.
So now I have no way to boot into Windows on my new Mac Pro 2014 machine.
Bootcamp is on the internal SSD along with OSX
I have never resized the partitions
I have not installed anything new in the last few weeks
I do not visit dodgy websites and run Malware bytes anti malware regularly (never found an issue to date)
Last night I added a secondary HDMI monitor
The day before yesterday I unplugged everything and rearranged my office
I uninstalled Parallels Desktop Trial (expired) 1 week ago from both Windows and OSX
I have backed up the Bootcamp partition to an external drive using Disk Utility
I CAN browse the bootcamp partition using finder and the folders and files are all visible.
New Mac Pro. 512GB SSD, OSX 10.9.3, 16GB Ram, Thunderbolt Display, HDMI Dell Display
Any help would be much appreciated as some of my key work software is on the BOOTCAMP windows install.

There is overcharging protection in the battery and the adapter, both. This can also be seen on OS X side under System Report -> Power. If you adapter is plugged in and the battery is charged, it will say 'Not charging' despite the fact that the power adapter is connected.

Help needed with java

Hello everyone
I'm a Student and new to java and I have been given a question which I have to go through. I have come across a problem with one of the questions and am stuck, so I was wondering if you guys could help me out.
here is my code so far:
A Class that maintains Information about a book
This might form part of a larger application such
as a library system, for example.
@author (your name)
*@version (a version number or a date)*
public class Book
// instance variables or fields
private String author;
private String title;
Set the author and title when the book object is constructed
public Book(String bookAuthor, String bookTitle)
author = bookAuthor;
title = bookTitle;
Return The name of the author.
public String getAuthor()
return author;
Return The name of the title.
public String getTitle()
return title;
and below are the questions that I need to complete. they just want me to add codes to my current one, but the problem is I don't know where to put them and how I should word them, if that makes sense.
Add a further instance variable/field pages to the Book class to store the number of pages in the book.
This should be of type int and should be set to 0 in the Constructor.
Add a second Constructor with signature
public Book(String bookAuthor, String bookTitle, int noPages) so it has a third parameter passed to it as well as the author and title;
this parameter is used - obviously?? - to initialise the number of pages.
Note: This is easiest done by making a copy of the existing Constructor and adding the parameter.
Add a getPages() accessor method that returns the number of pages in the book.
Add a method printDetails() to your Book class. This should print out the Author title and number of pages to the Terminal Window. It is your choice as to how the data is formatted, perhaps all on one line, perhaps on three, and with or without explanatory text. For instance you could print out in the format:
Title: Robinson Crusoe, Author: Daniel Defoe, Pages:226
Add a further instance variable/field refNumber() to your Book class. This stores the Library's reference number. It should be of type String and be initialised to the empty String "" in the constructor, as its initial value is not passed in as a parameter. Instead a public mutator method with the signature:
public void setRefNumber(String ref) should be created. The body of this method should assign the value of the method parameter ref to the refNumber.
Add a corresponding getRefNumber() accessor method to your class so you can check that the mutator works correctly
Modify your printDetails() method to include printing the reference number of the book.
However the method should print the reference number only if it has been set - that is the refNumber has a non-zero length.
If it has not been set, print "ZZZ" instead.
Hint Use a conditional statement whose test calls the length() method of the refNumber String and gives a result like:
Title: Jane Eyre, Author: Charlotte Bronte, Pages:226, RefNo: CB479 or, if the reference number is not set:
Title: Robinson Crusoe, Author: Daniel Defoe, Pages:347, RefNo: ZZZ
Modify your setRefNumber() method so that it sets the refNumber field only if the parameter is a string of at least three characters. If it is less than three, then print an error message (which must contain the word error) and leave the field unchanged
Add a further integer variable/field borrowed to the Book class, to keep a count of the number of times a book has been borrowed. It should (obviously??) be set to 0 in the constructor.
Add a mutator method borrow() to the class. This should increment (add 1 to) the value of borrowed each time it is called.
Include an accessor method getBorrowed() that returns the value of borrowed
Modify Print Details so that it includes the value of the borrowed field along with some explanatory text
PS. sorry it looks so messey

1. In the future, please use a more meaningful subject. "Help needed with java" contains no information. The very fact that you're posting here tells us you need help with Java. The point of the subject is to give the forum an idea of what kind of problem you're having, so that individuals can decide if they're interested and qualified to help.
2. You need to ask a specific question. If you have no idea where to start, then start here: [http://home.earthlink.net/~patricia_shanahan/beginner.html]
3. When you post code, use code tags. Copy the code from the original source in your editor (NOT from an earlier post here, where it will already have lost all formatting), paste it in here, highlight it, and click the CODE button.

HELP NEEDED WITH ADDAPTER-DVI TO VGA.

PLEASE ...HELP NEEDED WITH WIRING CROSS OVER....CAN YOU HELP WITH BACK OF PLUG CONNECTIONS...I SORTA UNDERSTAND THE PINOUTS BUT CANT MAKE AN EXACT MACH...WOULD LIKE TO BE 100% SURE...
......THIS ENSURES NO SMOKE!!!
THE CARD IS AN ATI RADEON RX9250-DUAL HEAD-.........ADDAPTER IS DVI(ANALOG)MALE TO VGA(ANALOG)FEMALE.
ANY HELP VERY MUCH APPRECIATED........ SEEMS YOU NEED TO BE ROCKET SCI TO ATTACH A BLOODY PICTURE...SO THIS HAS BEEN BIG WASTE OF FING TIME!

Quote from: BOBHIGH on 17-December-05, 09:21:31
Get over it mate !
I find it easy t read CAPS...and if you dont like it ...DONT READ IT!
And why bother to reply...some people have nothing better to do.
Yes there chep and easy to come by...Ive already got a new one.
All I wanted was to make a diagram of whats inside the bloody thing...it was a simple question and required a simple answer.
NO NEED TO A WANKA !!
I feel a bann comming up.
Have you tryed Google ? really.. your question is inrelevant. No need to reply indeed.
Why do you come here asking this question anyway ? is it becouse you have a MSI gfx card ? and the adapter has nothing to do with this ?
You think you can come in here yelling.. thinking we have to put up with it and accept your style of posting. This is not a MSI tech center.. it's a user to user center.. Your question has nothing to do with MSI relavant things anyway's.
Google = your friend.
Quote from: BOBHIGH on 17-December-05, 09:21:31
it was a simple question and required a simple answer
Simple for who ? you (buying a new one) ? me ? we ? .really...........
Quote from: Dynamike on 16-December-05, 04:11:48
1: There are allot of diffrent types of those adapters.
If any of the mods have a problem about my reply.. please pm me.

Help needed with Vista 64 Ultimate

"Help needed with Vista 64 UltimateI I need some help in getting XFI Dolby digital to work
Okay so i went out and I bought a yamaha 630BL reciever, a digital coaxial s/pdif, and a 3.5mm phono plug to fit perfectly to my XFI Extreme Music
-The audio plays fine and reports as a PCM stream when I play it normally, but I can't get dolby digital or DTS to enable for some reason eventhough I bought the DDL & DTS Connect Pack for $4.72
When I click dolby digital li've in DDL it jumps back up to off and has this [The operation was unsuccessful. Please try again or reinstall the application].
Message Edited by Fuzion64 on 03-06-2009 05:33 AMS/PDIF I/O was enabled under speakers in control panel/sound, but S/PDIF Out function was totally disabled
once I set this to enabled Dolby and DTS went acti've.
I also have a question on 5. and Vista 64
-When I game I normally use headphones in game mode or 2. with my headphones, the reason for this is if I set it on 5. I get sounds coming out of all of the wrong channels.
Now when I watch movies or listen to music I switch to 5. sound in entertainment mode, but to make this work properly I have to open CMSS-3D. I then change it from xpand to stereo and put the slider at even center for 50%. If I use the default xpand mode the audio is way off coming out of all of the wrong channels.
How do I make 5. render properly on vista

We ended up getting iTunes cleanly uninstalled and were able to re-install without issue. All is now mostly well.
Peace...

Help needed with delete of bootcamp partition, error message 'Couldn't unmount disk'

Similar Messages

Maybe you are looking for