Hey People, Disk Image? Unmount?

New to macs, wanted to use Toast to copy a DVD I get a message telling me "disk cound not be unmounted , all open files and programs on this volume must be closed first" So what does unmount mean and how do you do it? I've searched and can not find the answer, also what is a "disk image" ? I guess these things are so simple that theres no need to post the info anywhere, but I'm stumped.
Powermac G4 Mac OS X (10.4.7)

A disk image file is a disk file containing a complete disk (including its own catalog of files in the disk image). When it is "mounted" (by double-clicking the disk image file) OSX treat the disk image file as if it were a disk drive. It will appear in the Finder sidebar (with an eject symbol next to it) and/or on the desktop, depending on Finder preferences. When it is dismounted, by selecting the file and pressing Cmd-E (eject), its icon disappears from the Finder sidebar and/or desktop, and the files it contains become unavailable to OSX.

Similar Messages

Cannot unmount any disk images

Hey guys, I've a problem. I can't unmount all the disk images that I've mounted. The same thing with usb external drives.
The only way to eject is going to utility disk and unmount the images frome there. It's really annoying... Anyone can help me? I'm not sure, but i think that the problem was due to of cocktail software.. I set all the default setting but the problem isn't solved...
thanks for your help.

Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of the file system or of certain system caches.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. Start up in safe mode and log in to the account with the problem. You must hold down the shift key twice: once when you boot, and again when you log in.
Note: If FileVault is enabled, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to boot and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal boot may also be somewhat slow.
The login screen appears even if you usually login automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Test while in safe mode. Same problem?
After testing, reboot as usual (not in safe mode) and verify that you still have the problem. Post the results of the test.

Problems unmounting/ejecting a disk image after upgrade to 10.4.9

Since I upgraded to 10.4.9 I have the following problem:
After viewing a slideshow of pictures located in a disk image I cannot unmount/eject this image. I receive an error message that the image cannot be deactivated/ejected as some file is still in use.
Using the activity monitor I checked which files are in use by the Finder and found out that the last picture shown by slideshow is still referenced.
To me it seems as if the upgrade from 10.4.8 to 10.4.9 either changed the behaviour of slideshow (which does not close all files when terminated) or the eject image function (which does not force all open files in the image being closed).
The only bypasses I found so far are
- using "umount -f" on Unix level (think I have to be an admin for that)
or
- logging off and on again / restarting the computer
Has anybody got other ideas how to force the unmount without using native UNIX commands in a terminal window?
Can someone tell me how I can report this bug to apple? On Apple's support pages I could not find any information on that.
Thanks in advance for any helpful hints.
iMac 20" intel Mac OS X (10.4.9)

The "Dock" contextual menu item to "Relaunch" the "Finder" is the equivalent of a "Force Quit", which is quite different from a regular "Quit".
Unless it is being unresponsive to a normal "Quit" signal, force quitting any application is not recommended because unsaved changes will be lost. In the case of the "Finder", any sort of file transfers in progress will be interrupted. Data loss may also occur if a file containing "comments" has been moved at some point earlier in the login session.
A normal "Quit", such as what occurs when logging out, quitting through the menu, using AppleScript or the "Quit" option of "Activity Monitor.app" ensures that the app quits in an orderly manner.

Disk Image of unmounted Macintosh HD

So I was using my Mac and it suddenly shut down. When I went to restart it, it got stuck on the grey screen and the Apple logo turned into a no access symbol (circle with horizontal line through it). I booted into Recovery, and used the Disk Utility only to find that "Macintosh HD" is unmounted and greyed out. In addition to this, I cannot verify or repair the disk because all of those options are also greyed out. However, I noticed that "500.11 GB Toshiba MK5065GSXF" wasn't greyed out, so I tried to verify and repair that - which failed.
Before I take it into an Apple store I want to create a disk image of Macintosh HD so I can restore all my current data (I already have a time machine back up but its a bit old). Anyway, my main question is, will creating a "new image" of 500.11 GB Toshiba MK5065GSXF and saving it onto an external hardrive work? Or does the image have to be specifically from the Macintosh HD partition? I can't even create a "new image" from Macintosh HD, all options are greyed out!! I'm really confused. I've already read through a few other posts already but I'm still unsure of what to do. Any help would be really appreciated!
My computer is running Mac OS X Lion and has File Vault enabled.

Is there a solution to this at all?

Disk images won't unmount/eject for admin user, DVDs & iDisk also affected

This problem started when I was on Tiger, and seemed to follow me onto Leopard.
It only affects me, the primary user on my Mac. *One other user on the computer; she also has admin level access and does not have any of these problems.*
Here's the deal:
*Once mounted, disk images won't eject/unmount.*
- Dragging to the trash can doesn't work. The eject icon appears, but nothing happens.
- Ctrl-click does not show Eject as an option when highlighting the mounted image.
- CMD-E doesn't work
- EJect doesn't appear as an option in the finder menu
- Clicking on the Eject button in the sidebar of the Finder window doesn't work.
- I've logged out, rebooted, repaired permission, and installed a new OS (clean install of 10.5, then did the import of my old user settings. Since I had the problem in Tiger, it's clear the problem followed me, but what the heck causes it?)
*The only way to unmount/eject a disk image is to use the Disk Utility Program.*
*DVDs also can only be ejected via Disk Utility*
The iDisk connection can only be killed by opening Activity Monitor and killing the webdavfs_agent process.
Would love some help. I've searched a lot and have a fair amount of folks with this problem, but no real solution.

That'll work; however, then the OP has to reset all of his preferences. Easier would be to log into the newly created admin account, backup the bad account's folder, delete the bad account, selecting the save data option (which is stored in /Users/Deleted Users/ as a disk image), recreate the bad account using the same username/password combo, log out and back into the recreated original account. Mount the saved data dmg file in /Users/Deleted Users/, open the /Library/Preferences/ folder from the saved data, open the current /Users/restored account/Library/Preferences/ folder, and slowly copy plist files from the saved data folder to the current one. Log out and back in to ensure there's no conflict and things still work correctly. Resolving these kinds of conflicts is a laborious process, but not as laborious as resetting preferences or even remembering what you set weeks, months, or years ago.

Disk images suddenly will not unmount.

One of several intermittent troubles I am having on my new 24" iMac with Leopard:
suddenly when using disk images none will unmount. Only launching Disk Utility and unmounting them there works. Or logging out of my account. The eject symbol next to the disk image's name doesn't work. Dragging the disk image to the trash doesn't work either. If I have a disk image open and click eject it's Finder window closes, but he disk image remains mounted.
Three wipes of the HD and reinstalls of Leopard have failed to fix this issue.

I've got this one too. It also happens with external drives and not just disk images.
I made a little apple script which ejects disks and disks images.
on open some_items
repeat with this_item in some_items
try
do shell script "hdiutil detach " & quoted form of POSIX path of this_item
end try
end repeat
end open
open the above in Script editor and save it as an application. Put this application (or an alias to it) on the desktop. To unmount one or more disks drop them onto this application (you can do it with several disks at once). I find that this works a bit faster than launching disk utility and ejecting the drives manually. Still, it would be preferable if they just fixed it.

Disk image in doc has to be replaced after each unmount

Hello everyone,
I have a disk image which I made in the disk utility program. I set it up with the security incription option when I make it. After opening it I placed the image that mounts up on the desktop into my dock so I can easily go through the sub menu folders and so on.
When I was in os10.4.11 I had no problem going back into it after reboot or after unmounting the disk image and remounting it. But in 10.5.8 (which I am now using), every time I eject the image and remount it the fold in the dock does not work. I have to pull the folder (image) off the dock and drag the one from the desktop onto the dock every time. Is there any way to fix this?
Thank you for any help.
Marco

All the information is within the EDB file and I don't believe lower end tools like Stellar or others provide access to them and then there is the question of accuracy. Our DigiScope tool the tools from Kroll and Quest are accurate and reliable and
will give you access to all the recoverable items folders so you can export to PST and import as needed. You can get a DEMO license for DigiScope which will allow you to open all the mailboxes and their associated Recoverable Items folder to ensure
what you need is there before purchasing a license.
Another option would be to see if Stellar exported any of the recurring meetings from the calendar. You should be able to open the PST and see if any of the recurring items exists within the PST. If they do then you might see about importing
them from PST via Outlook and then once in place open the items to ensure they are set to be recurring and if not have the user adjust the recurring settings.
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DigiScope

How do I make Automator unmount a disk image everytime I quit Entourage?

I've found a way to password protest my email, by sticking my entourage data files in an encrypted disk image and then making an alias to link into that password protected disk image. My question is how do I make an Automator workflow that unmounts that disk image automatically when I quit Entourage. There has got to be a way to do this. It should be the most simple script.
On Entourage Quit: Unmount disk image [x]
But I can't seem to find out how to get this done.
Can anyone help?

Encore does have a fit-to-disc feature, called "automatic transcoding", which chooses the bit rate based upon how much media there is to encode, how much room is currently on the disc, and applying format-legal restrictions (minimum and maximum bit rates allowable by the format).
So for instance, 30 minutes of video will never fill a disc because the required bit rate to do so would be higher than allowable by the format.

Script to unmount or eject disk images

Is there a way to unmount disk images wiuth an automator or applescript? I have such a script to eject all disks, but this won't unmount disk images. I would like something that unmounts everything, except of course the startup disk etc.

Andrew Gara wrote:
That works!
However, I still have the problem that it will only eject 1 of 2 or 2 of 3 or 3 of 4 etc. I always have to run the script again to eject the remaining disk or image.
It says: Applescript error Finder got an error. Can't get disk 3 (or whatever is remaining.)
I really appreciate your help btw.
this of course makes sense because once a disk is ejected it's not counted among the remaining disks. we should start ejecting from the last disk (see the script below). Also, as i found out, Finder's eject command in apple script doesn't unmount internal drives. At least it didn't for me. I' not sure what the story here is.
One can circumvent this by calling a shell script command.
Something along the following lines.
tell application "Finder"
set nmd to number of disks
--this ejects externals and disk images
if nmd > 1 then
repeat with i from 2 to nmd
eject disk (nmd - i + 2)
end repeat
end if
--this ejects internals except for the start up
set nmd to number of disks
if nmd > 1 then
repeat with i from 2 to nmd
do shell script "diskutil unmount /Volumes/\"" & (name of disk (nmd - i + 2)) & "\"> /dev/null &"
end repeat
end if
end tell
I tested it on my computer and it ejects 10 disks and disk images well so I think it should work ok most of the times but there are probably situations when it will fail. I'm not sufficiently motivated to refine it.

Unmount disk image at logout

Account Preferences->Login items allows you to list disk images to mount on login, but these disk images do not get unmounted at logout - they can still be seen by other accounts.
Is there any way to force the Login items disk images to be unmounted when an account logs out?

Phill Hughes wrote:
Fine with scripting, but if the users have to remember to click something before logging out then they just as well eject the disk images. A cron job would work, but it would be nice to just have it happen. Thanks for the suggestions.
cron won't be good for this unless you want to run it every minute. I would use a logout hook
http://support.apple.com/kb/HT2420?viewlocale=en_US
so it's only executed on the logout. it can run an apple script along the following lines
<pre style="
font-family: Monaco, 'Courier New', Courier, monospace;
font-size: 10px;
margin: 0px;
padding: 5px;
border: 1px solid #000000;
width: 720px;
color: #000000;
background-color: #ADD8E6;
overflow: auto;"
title="this text can be pasted into the Script Editor">
tell application "Finder"
set nmd to number of disks
--this ejects externals and disk images
if nmd > 1 then
repeat with i from 2 to nmd
eject disk (nmd - i + 2)
end repeat
end if
end tell</pre>
this will unmount all externals and disk images when a user logs out.

How can I make a disk image of an unmountable disk?

I have an external La Cie USB 3 disk that refuses to mount. I'd really like to get the data off of it. I recently had another external disk die the clicking death and I found a utility that made a disk image of that disk, but now I cannot find the utility. All I can remember is that it had an odd name.
Any ideas?

Clone Lion using Restore Option of Disk Utility
Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Select Disk Utility from the main menu then press the Continue button.
Select the destination volume from the left side list.
Click on the Restore tab in the DU main window.
Check the box labeled Erase destination.
Select the destination volume from the left side list and drag it to the Destination entry field.
Select the source volume from the left side list and drag it to the Source entry field.
Double-check you got it right, then click on the Restore button.
Destination means the external backup drive. Source means the internal startup drive.
DU will also clone the Recovery HD partition automatically at the end of the process.

Errors when trying to open up a disk image that has been comp. & encrypted.

I have an old 15” PowerBook G4 that I purchased back in 2004 that I wanted to backup the data on in preparation to sell it. The PowerBook has Leopard (Mac OS 10.5) installed on it. I used my Leopard installation DVD to boot the computer up and then launched disk utility (v. 11.0 (252)). I wanted to make a disk image (.dmg) of my entire “Macintosh HD” partition, so after unmounting the partition (otherwise you get a “resource busy” error message), I selected File -> New -> “Disk Image From...(<hard drive partition>)”. The next screen presented me with a name to type in for the saved disk image file and options to compress and encrypt (128 or 256 bit AES) the image. I could not get the image to begin creation when I had both compression and encryption set. I kept getting the error message “Unable to create (error -60007)”. So, I opted to create the disk image with just compression selected. This worked fine and I was able to select the image (let’s call it disk_image1) and perform an Image -> “Scan Image for Restore...” successfully as well as mount the image and open up files (the verification process took a long time before the image mounted, but it was successful).
Next, I moved the Firewire 800 external HD containing “disk_image1” to my new MacBook Pro (Snow Leopard installed) and opened up disk utility (v. 11.5.1 (298.1)). I was able to successfully mount the image and browse and open up files with this updated version of disk utility. I then attempted to convert the disk image I just created to a new disk image (let’s call it disk_image2) via Images -> “Convert...”. I selected “disk_image1” and then named the new image (disk_image2). I then selected compression and 128bit AES encryption, entered in a passphrase and started the process. Everything worked great in creating “disk_image2”, but when I tried to open up the image either in Finder or within disk utility, I got error messages. In disk utility, I got the message “Unable to attach “disk_image2.” (Authentication error).” and within Finder, I got “The following disk image couldn’t be opened” disk_image 2 (Authentication error). Note, I was never asked to provide the password I used to encrypt the image nor did I ever select to save it in my keychain. Just as a precautionary measure, I check my keychain and did not see the password for the encrypted image saved in there.
Is there a bug within disk utility with the way a compressed & encrypted image is created or a problem with the authentication process for an encrypted image?

I have not had this happen to me, but have read similar stories from people on these boards for years. I think saving an entire OS X boot disk to a disk image is asking for trouble. If anything goes wrong, one byte of data is copied incorrectly. it can render the entire image unmountable and all of the data in it inaccessible.
I'd use Disk Utility's Restore button (or a program like SuperDuper or Carbon Copy Cloner) to make a complete copy of the hard drive onto its own hard drive, skipping the disk image. If any bit of data gets dropped then only one file is affected, instead of the whole works. Do you have any other stuff on that external drive? If not, just erase it and try again, copying everything directly to the drive instead of to a disk image.

Is it safe to back up a disk image file when it's mounted?

Hi -
I use some small, encrypted ".sparsebundle" disk image files to keep my diary, banking info, etc., on. When I'm at the computer, I keep them mounted all the time.
Is it safe to let Time Machine automatically back up the .sparsebundle disk image files, even while they are mounted? Or would there be a possibility the backups would be corrupted, if the operating system hadn't written out cached data or something to the disk image file?
In other words, if I save any open documents on the mounted disk image, does the disk image file on disk always contain the fully-saved document and a consistent file system? Or could there still be some data cached in RAM, that would not be saved at the time the .sparsebundle file was copied? Is it always necessary to unmount a disk image before duplicating its .sparsebundle file?
Do I need to turn off Time Machine's automatic backup, and just do manual "backup now" after unmounting the disk images? That's a major pain in the behind... I really want to just let Time Machine do it's hourly backups as usual, but of course there's no point if the backups are corrupt.
Of course my own guess is "to be safe", I should unmount them before backing up. But again it's a big pain if it's not actually necessary. Does anyone know for sure?
Thanks...

My understanding is that Unix, generally, doesn't write everything out to disk immediately. There is caching in RAM to speed up disk access, including modified superblocks, modified inodes, and delayed reads and writes. Now, if you ask to read an individual file, the kernel makes sure all the cached data is written before it returns the read data. But if you try to do, for example, a block copy of the whole filesystem, the kernel doesn't know that, and there's no guarantee or expectation that the filesystem will be in a coherent state.
That's the purpose, for example, of the "sync" command - to write all this cached data to disk before unmounting, shutting down, etc., and, that's why the OS gets so upset if you just unplug a firewire drive. Because even if you've saved and closed any open documents, they haven't necessarily been fully written out to disk yet.
So what I don't understand, is how people are ever able to back up mounted disk image files without them getting corrupted. I mean, you'd think they would get corrupted all the time. It would be the equivalent of just unplugging your firewire drive before you made a backup of it, or of doing a block copy of a read/write mounted filesystem. There ought to be a very good chance of the filesystem being scrambled. So, why does it not happen?
Is there something different about the Apple filesystem, or Apple disk images? Or, maybe we're only talking about delay times in the cache of fractions of a second, so as long as you haven't written anything within a few seconds of the copy, and don't write anything during it, you're ok?
Even if Apple reps won't answer my question, the kernel and most likely all the low-level disk i/o and filesystem stuff is open source. Surely there's someone out there who would be knowledgeable enough to give a definitive answer? I was hoping to find someone like that here... I do appreciate your taking the time to answer my post, but maybe I need to go elsewhere, on some developers' mailing lists or something? Does anyone know of such a place I could start looking?
Thanks...

Cancelling automounting of a disk image?

greetings,
does anyone know where the switch is to make a dmg file stop automounting when the finder starts? a couple years ago i needed to install RealPlayer to open a realplayer file... ever since then, the RealPlayer disk image automatically mounts on the desktop anytime the finder restarts (reboots, etc...)
i didn't find anything in "Get Info" for either the dmg or the virtual disk on the desktop... diskUtility lists this file also, but i didn't see an option for automounting...
thanks for any suggestions...

yes i know i can do that to solve the problem. but i usually keep the last version of a program or updater i download because sometime i need to reinstall... also, i'm one of those terminally curious people sometimes that is compleled to figure it out...
i suppose i could try zipping the dmg file... that would sure make it unmountable... and if all else fails i could just delete it... i don't particulary like realplayer, though i dislike windoz media player more... but there is information saved in that format which is the only reason i use it... i much prefer actual mpegs so i can use any player...
thanks for the suggestions-

I get an error mess when trying to complete backup "The backup disk image "/Volumes Time Capsul MacBook Pro.sparsebundle" could not be accessed (error -1).

When trying to use my time machine got an error message "Time Machine could not complete the backup.
The backup disk image “/Volumes/ Time Capsul/ MacBook Pro.sparsebundle” could not be accessed (error -1).
Any ideas?

I have not found a long-term solution (fix), but in my case the volume where the Time Machine backup should occur usually is mounted on the desktop but not as a shared volume (incidated as a drive with the people holding hands superimposed over the drive icon). If I drag the drive to the trash (unmount it), the next time Time Machine is scheduled to run, it completes successfully.

Hey People, Disk Image? Unmount?

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