Disk Image won't automatically mount for Share iPhoto Library

Hey All,
I've just got a new mac and am sharing an iPhoto library between two users. I moved the iPhoto Library Folder to a DMG set it to ignore permissions.
In each account I did the following: Hold down the option (or alt) key and launch iPhoto. From the resulting dialogue, select 'Choose Library' and navigate to the new library location. From that point on, this will be the default library location. Both accounts will have full access to the library, in fact, both accounts will 'own' it.
The problem is that the DMG won't mount automatically mount. I set it up under both user accounts to mount at start up but it won't do it.
Am I doing something wrong?

Are you using fast user switching or logging out and then back in to the second account? It may be that fast user switching doesn't trigger a "startup" scenario in the second account which is necessary for the disk image to mount.
TIP: For insurance against the iPhoto database corruption that many users have experienced I recommend making a backup copy of the Library6.iPhoto (iPhoto.Library for iPhoto 5 and earlier) database file and keep it current. If problems crop up where iPhoto suddenly can't see any photos or thinks there are no photos in the library, replacing the working Library6.iPhoto file with the backup will often get the library back. By keeping it current I mean backup after each import and/or any serious editing or work on books, slideshows, calendars, cards, etc. That insures that if a problem pops up and you do need to replace the database file, you'll retain all those efforts. It doesn't take long to make the backup and it's good insurance.
I've created an Automator workflow application (requires Tiger or later), iPhoto dB File Backup, that will copy the selected Library6.iPhoto file from your iPhoto Library folder to the Pictures folder, replacing any previous version of it. It's compatible with iPhoto 6 and 7 libraries and Tiger and Leopard. Just put the application in the Dock and click on it whenever you want to backup the dB file. iPhoto does not have to be closed to run the application, just idle. You can download it at Toad's Cellar. Be sure to read the Read Me pdf file.
Note: There's now an Automator backup application for iPhoto 5 that will work with Tiger or Leopard.

Similar Messages

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.

Dmg images won't automatically mount anymore

Yesterday when I downloaded the new Flash 10 dmg file I noticed a strange thing. When I double-click on it it opens Disk Utility instead of mounting with disk utility. Disk Utility just opens and sits there on the screen. You can then choose the dmg and mount it manually from within Disk Utility and manually close it when done. Any ideas? Thanks,
Matt

Try repairing the DMG file in Disk Utility. Drag it into Disk Utility's list of devices, select it and run the repair process.
Try opening the DMG from a new user account and see if it works from there.
And [here's a thread|http://discussions.apple.com/thread.jspa?messageID=8058265&#8058265] that seems relevant.
/p

Disk Image Won't Mount - Reason: Device Not Recognized

As I've searched the discussion forums, I've seen plenty of postings for "Disk Image Won't Mount" and for "Device Not Recognized" but not the way I'm seeing it on my laptop.
After a backup and restore, my mac will no longer mount any... and I mean any images. I have downloaded several security or software updates from different vendors and each .dmg file will not mount. I still have the .dmg files in hopes that after I get this problem solved, I'll be able to install them, but...
It always gives the same reason for not mounting and I'm at a loss on what to do next. I've run Software Update hoping it will be a quick fix, but have had no success.
Any suggestions?

I have a similar problem. Using FireWire disk mode, I put a disk image of my entire iBook onto my iMac as a back-up. (For an unrelated problem, Apple told me I needed to erase my iBook completely and do a clean install of the system.) Well, I screwed something up. I don't know what exactly--maybe I didn't "put away" the device correctly, but the next day when I flipped on my iMac, the disk image of my iBook was just gone, and not to be found anywhere. I finally succeeded in restoring the image using TechTool, which scanned the entire volume of the iMac for directory information. And it's all there, because the img file is more than 10GB. But when I double-click on it, I get the following error msg: "The following disk images failed to mount...reason--not recognized." I've checked the app it's supposed to open with, permissions, and run Disk Utility volume repair. No dice. Any ideas??? Did I mention that this is EVERYTHING I had on my iBook???

Another OS 10.4.11 update problem - disk images won't mount?

Hi people,
Have never had to post on these boards as i've never suffered serious problems with my mac, until today.
Whilst installing/updating my powerbook to version 10.4.11 my mac seemed to crash so i rebooted my system. Probably not the best thing to do (i have little patience so was annoyed).
I'm guessing the update installed as my mac says it is now version 10.4.11 but when i go to mount any disk images it will not mount at all, but instead comes up with this message -
"The following disk image failed to mount
Reason - error 0xe00002c9"
I've verified and repaired the permissions on the startup drive in disk utility, and also verified the volumed and it says everything is ok in those departments. Although the option to repair the disk is not available for selection.
I've downloaded applejack, but obviously can't mount the image file.
Please help as this is a big problem with regards to my work and play!
Thanks for reading.

Hmm thank you for your time and effort on this problem BDAqua but unfortunately it still doesn't want to work! The 'DMG utility' program comes back with an error when trying to mount any of the disk images i have tried. I have been able to get up the script of what its doing in the 'console' application but that is ridiculously long, and i'd be lying if i said i have a single clue about what any of the script in it means!
So i'm guessing i'm gunna be archiving and re-installing. But this boads another question as i haven't a slightest clue about how to archive my files as i really don't want to lose any of it.
sorry BDAqua

Ack! Disk Images Won't Mount!

As of a month ago, I have been totally unsuccessful with mounting disk images. No disk image I download will mount. As you can imagine, this is a frustrating issue! I am far from computer savvy, so any help is appreciated. One suggestion I received was to reinstall the mounting utility, what are the implications of that?
Either way I would really like to know what is going on and how I can fix this! Anybody?

Thing to do is either try to repair what you have, or replace part/all of the OS, let us know which waty you want to go, but first...
"Try Disk Utility
1. Insert the Mac OS X Install disc that came with your computer, then restart the computer while holding the C key.
2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu. (In Mac OS X 10.4 or later, *you must select your language first.)*
*Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.*
3. Click the First Aid tab.
4. Click the disclosure triangle to the left of the hard drive icon to display the names of your hard disk volumes and partitions.
5. Select your Mac OS X volume.
6. Click Repair. Disk Utility checks and repairs the disk."
http://docs.info.apple.com/article.html?artnum=106214
Then boot from your HD and Repair Permissions, then reboot again.

CDs, DVDs, disk images won't appear in Sidebar or on Desktop

Hello,
Brand new iMac 2.16, right out of the box.
CDs, DVDs, and Disk Images won't appear on the desktop or in the Sidebar. Nothing is shown over the horizontal gray line at the top of the sidebar, no Macintosh HD, Servers, etc. Disk Images are fully functional, ie Disk Utility recognizes and mounts them just fine.
I checked Mac Help and followed its instructions:
(1) In Finder preferences:Pane:General, all 'Show These Items on the Desktop' boxes are checked.
(2) In Finder preferences:Pane:Sidebar, I checked all boxes under "Show These Items in the Sidebar. BUT these changes are NOT retained. After I close the Preferences, the Sidebar does not change. If I re-open the Sidebar preferences, the relevant boxes are now unchecked, as if I'd never done a thing.
Restarting was the only way to fix the problem. Thereafter, the upper items in the Sidebar (Macintosh HD, external drives, iPod, CDs) sometimes SPONTANEOUSLY disappear. They still show up on the desktop, but tweaking the Sidebar preferences is again ineffective. Restarting is the only solution.
Thank you for your help,
Andy

Hi Andy, Welcome to Apple's Users Help Users Forums.
1] Everything elmac says is helpful and correct.
2] An upgrade to 10.4.8 with the 10.4.8 Combo from blue apple / Mac OS Updates might fix your hiccup. If you don't want .8 then .7 combo.
3] [OT] For some minor security issues, it is better to surf the internet in a standard account. If you are surfing in an admin account then here is how to switch and maintain prefs.
Set up a new account in System Preferences / Accounts / +
and make it have admin priviledges. Be sure to remember short name and password since you will be asked to "authenticate" when running in your standard account. This new account is often called "test" in these forums.
Once that is done convert your regular account to standard.
Good Luck, JP

DVD burned from a disk image won't work on different computers???

Under the directions for how to burn a DVD from an disk image, the Apple Help document (http://docs.info.apple.com/article.html?artnum=93006) says this:
"Note: When burning a disc from a disk image, the burned disc will have the same format as the disk image. If you need a disc that will work on different computers, burn the disc in the Finder."
Does this mean that the DVDs that I am burning from the disk image won't be able to be played on a PC? a Mac other than mine? Neither? WHAT? I am planning to sell the DVDs of a workshop I present -- to people who may be playing them on PCs. Should I not be using this method (burning from a disk image) to burn my DVDs?
PowerBook G4 Mac OS X (10.4.9)

Under the directions for how to burn a DVD from an
disk image, the Apple Help document
(http://docs.info.apple.com/article.html?artnum=93006)
says this:
"Note: When burning a disc from a disk image, the
burned disc will have the same format as the disk
image. If you need a disc that will work on different
computers, burn the disc in the Finder."
Does this mean that the DVDs that I am burning from
the disk image won't be able to be played on a PC? a
Mac other than mine? Neither? WHAT? I am planning to
sell the DVDs of a workshop I present -- to people
who may be playing them on PCs. Should I not be using
this method (burning from a disk image) to burn my
DVDs?
Video DVDs are in the UDF format. The disk image you created is in the UDF format. When you use Disk Utility to burn the disk image to writable media, the new discs will be in UDF format and all will be well.
You are doing things correctly.
BTW, unless you have an external burner with lots of cooling, if you expect to use the burner in your Mac (which DOESN'T have lots of cooling), it's a good idea to pause between discs to allow the burner to cool down. (BTW, this comment is based on the reported results of several people in the forum. If you don't allow the cool down timer, you will start to create 'bad' discs. Also it is VERY important that you reduce the burn speed in Disk Utility to 4x or lower in order to create discs with maximum compatability with players. (You should see a way to change the speed in Disk Utility afterr you have inserted a disc.)
F Shippey

Time Machine / Time Capsule Error: Backup disk image could not be mounted

So I'm trying to back up to time machine, which used to be working fine, but I have this problem happening on two computers now (which probably means the error is in my Time Capsule.)
The Time Capsule shows up on my "shared" list in my finder windows.
I can connect to it, and open the folder inside, and SEE my two disk image files in there.
But Time Machine gives me a "The Backup Disk Image Could Not Be Mounted" error. No other information.
If I double-click on the disk image file directly, I get an error "The Following disk images failed to mount" and then it lists the file and says "Resource temporarily unavailable."
Help, please.

I'm caught in the same loop, with no end in sight. I've only been using Time Machine and Time Capsule for 2 months. This week it stopped working. First error message:
"Unable to complete backup. An error occurred while copying files to the backup volume."
Checking the Time Machine preferences, "Last backup" would read "backup failed"
When I got this error, all the wireless functions went offline, even thought the TC light was still green.
I would shut down, shut down the Time Capsule, shut off my modem reboot everything in order.
Next error message:
"Disk repair. The disk 'Backup of [my computer]' was not repairable by this computer. It is being made available to you with limited functionality. You must backup your data and reformat the drive."
Then: "Time Machine Error: The backup volume is read only. To select a different volume ... Time Machine preferences ... "
I spoke to someone at Apple, who sent me the Time Machine Troubleshooting page:
http://support.apple.com/kb/HT3275?viewlocale=en_US
I went through:
1. updated my system software
2. updated the TC firmware to 7.4.1
3. dragged the sparsebundle to DiskUtility. It took a while (more than an hour?) but said the disk could not be repaired. When I tried again, the repair function wouldn't run.
4. tried to delete the sparsebundle, but it would choke at almost the end, sometimes it would just crash the finder, sometimes say "Sorry, an unexpected error occurred," sometimes "Operation cannot be completed because the item 'bands' is in use." I even tried to Stuff the bundle with 'delete original' checked, but the stuffing, after about 15 hours, jammed near the end (stuffed 20 gigs of 35 gigs).
5. tried to reselect the TC, and run backup anyways ... now it can't find the volume, back to the error messages and crashing Finder
6. checked password in Keychain, all ok.
Now what??
Do I use Airport Utility to erase it? At least TC is still showing up there. Or press the rest button on the back of the Time Capsule to reset to factory defaults?
I've resigned myself to losing my backups. Now I would just like to get it up and running again.
In hopes,
Linda

Time machine - "the backup disk image could not be mounted"

SInce a few days, I am unable to backup via Time Machine.
I always get the message:
TIME MACHINE ERROR
The backup disk image could not be mounted
I use an Apple Time Capsule and still have more than enough free space on it.
Use OS X 10.5.5
Help.....
Tks

Rosy,
*_"The Backup Disk Image Could Not Be Mounted" (Console - “Failed to mount disk image”)_*
First, it is important to distinguish this error message from another, similar Time Machine error that states “The backup volume could not be mounted”. This is important as the causes and cures for these two errors can be very different.
Consider each topic below separately. When one option does not resolve your issue, then move on the next one.
*Unmount the Backup Disk Image* (TC)
If, for some reason, you have manually mounted the Time Machine backup disk image (sparsebundle), or Time Machine failed to eject it after the previous backup, subsequent backups may fail. (Console - “Failed to mount disk image”… “Backup failed with error: 21”)
Eject the backup disk image (white drive icon) by either clicking the little Eject icon to the right of the disk image in the Finders’ Sidebar, or Ctrl-Click the drive icon on the desktop and select “Eject” from the contextual menu. Now try backing up again or launching Time Machine to view previous backups.
*“Disconnect All Users…”:*
If your Time Machine backup drive (“Backup of Users Computer”) is mounted on your desktop or in the Sidebar of the Finder window. then Time Machine may think the drive is already in use. Alternatively, if the Time Capsule hard disk has been recently accessed by a Windows machine, it may not have fully relinquished control. Do the following:
Open Airport Utility and select the Time Capsule on the left.
Click “Manual Setup”.
Select “Disks” at top of window.
Click “Disconnect All Users…” at bottom of window.
Close the Airport Utility.
Now try Backing up again.
“I got it resolved. Apparently it had to do with one of the files being open on the disk from the drive. I had browsed the disk with one of my windows boxes here and it must have left one of the folders "open". Anyway, I rebooted the TC and we are good to go now.”
*Proper Computer Name* #
Make sure your computer has a proper name. Go to System Preferences --> Sharing. Time Machine needs to differentiate your computer from others on your network (i.e. "Bills MacBook" or "Office iMac"). If the "Computer Name" field is blank, create a name. Realize that if this step is necessary, you will likely have to start the Time Machine backup process over again and do another full initial backup.
According to this article, [http://support.apple.com/kb/TS1760], Time Machine may experience problems if your computer name includes certain characters. Make sure the computer name only includes ASCII characters from the following set.
(0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ)
Once a change in the computer name occurs, you should stop and restart Sharing on the affected computer. Uncheck and then recheck Sharing in the Services list on the left.
Let us know if any of the suggestions above resolves your issue.
Cheers!

Time machine error: The backup disk image could not be mounted

Time Machine worked OK for several months. Now I get this error every 10 minutes or so.
I unplugged Time Machine capsule and "Change Disk" in Time Machine options.
Nothing helps, I continue to get this error.
I cannot Enter Time Machine either. "Connecting to Server, Connecting to backup" does not work.
Help please because I will probably have to archive and reinstall Leopard. I need the backups,
Christine

Christ1ne,
Before you reformat the disk, consider these causes of this error.
*_"The Backup Disk Image Could Not Be Mounted" (Console - “Failed to mount disk image”)_*
First, it is important to distinguish this error message from another, similar Time Machine error that states “The backup volume could not be mounted”. This is important as the causes and cures for these two errors can be very different.
Consider each topic below separately. When one option does not resolve your issue, then move on the next one.
*Unmount the Backup Disk Image* (TC)
If, for some reason, you have manually mounted the Time Machine backup disk image (sparsebundle), or Time Machine failed to eject it after the previous backup, subsequent backups may fail. (Console - “Failed to mount disk image”… “Backup failed with error: 21”)
Eject the backup disk image (white drive icon) by either clicking the little Eject icon to the right of the disk image in the Finders’ Sidebar, or Ctrl-Click the drive icon on the desktop and select “Eject” from the contextual menu. Now try backing up again or launching Time Machine to view previous backups.
*“Disconnect All Users…”:*
If your Time Machine backup drive (“Backup of Users Computer”) is mounted on your desktop or in the Sidebar of the Finder window. then Time Machine may think the drive is already in use. Alternatively, if the Time Capsule hard disk has been recently accessed by a Windows machine, it may not have fully relinquished control. Do the following:
Open Airport Utility and select the Time Capsule on the left.
Click “Manual Setup”.
Select “Disks” at top of window.
Click “Disconnect All Users…” at bottom of window.
Close the Airport Utility.
Now try Backing up again.
One poster reported: “I got it resolved. Apparently it had to do with one of the files being open on the disk from the drive. I had browsed the disk with one of my windows boxes here and it must have left one of the folders "open". Anyway, I rebooted the TC and we are good to go now.”
*Proper Computer Name* #
Make sure your computer has a proper name. Go to System Preferences --> Sharing. Time Machine needs to differentiate your computer from others on your network (i.e. "Bills MacBook" or "Office iMac"). If the "Computer Name" field is blank, create a name. Realize that if this step is necessary, you will likely have to start the Time Machine backup process over again and do another full initial backup.
According to this article, [http://support.apple.com/kb/TS1760], Time Machine may experience problems if your computer name includes certain characters. Make sure the computer name only includes ASCII characters from the following set.
(0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ)
Once a change in the computer name occurs, you should stop and restart Sharing on the affected computer. Uncheck and then recheck Sharing in the Services list on the left.
# Try removing the apostrophe from the disk images name (sparsebundle).
*A Stalled .inProgress Files:* #
It may be that the previous backup attempt was ungracefully interrupted leaving remains that Time Machine can’t deal with.
Stop any current backup attempt. Choose “Stop Backing Up” from the Time Machine menu.
Open the Time Machine Preferences and turn “OFF” Time Machine.
Open your Time Machine drive.
Open the folder labeled “Backups,backupdb”.
Now open the folder containing backups of the computer in question.
Are there any “.inProgress” files there. Delete them by dragging the file to the Trash. Or Ctrl-Click the file and select "Move to Trash" from the contextual menu. (Give this time as deleting a large file on an external disk can take a while.)
Turn Time Machine back “ON”. Now try backing up again.
NOTE: If the above procedure becomes impossible to perform, try accessing the disk image from another Mac. Some have discovered that attempting a repair from another computer succeeds where the original computer failed.
Let us know if any of the suggestions above helped to resolve your issue.
Cheers!

Fix to the problem-- Back up Disk Image could not be mounted

In order for TC to backup your entire HD it needs to create a Disk Image on your Mac. For example you would have seen your computer do this operation if you ever installed programs on your Mac computer.
I actually had this same problem and I searched the forum for answers. One fix that I found was that your computer might actually not be named. To fix this click on the apple in the upper left hand corner and then go to >System Preferences. Then click on >Sharing, after you do that you will see Computer name at the top. Type in whatever name you like for that part and then also turn on file sharing by clicking the box next to it below.
The other fix to this problem...which was actually the solution to mine, was that during setup 2 files for a Disk Image mount were created onto the Time Capsule itself. It is only supposed to have one. *In order to fix this problem-->If your Time Capsule is setup so it allows file sharing you should be able to see it as a connectable disk drive in your Finder window under sharing. Click on Time Capsule from there and enter in you password. You should now be able to search though the files on it. Since this is your first time setting it up there should only be one file visible on the Drive and that one file is what creates the mounted Disk Drive...(What I found on my Time Capsule drive was a file labeled with a bunch of numbers and then a Shared folder and then another file with a bunch of numbers in that). For me it actually turned out that the first file was not working properly but the one in the shared folder was. So I deleted the first file and dragged the second file that was working out of the shared folder and into the main part of the Time capsule Disk and then deleted the shared folder.
The way you can tell which file is the correct one is by double clicking it, if you get an error message right away, delete it. If it starts to load, then that is the file you should keep. After I did this mine worked fine and backed up my disk last night. I hope this helps

I have had the time capsule since it first shipped. In that time I've TWICE suffered a corrupt backup disk image (which I checked by trying to hand mount it by selecting the TC under sharing, and trying to open the sparse image - each time it failed and reported an unfixable error). Each time this occurred after the machine had been working flawlessly for 3 or 4 weeks. This makes the machine completely useless in respect of Time Machine. The disk seems to check out as I've just zero'd all data and it did not report a fault, and I have now reset the capsule (using the hole at the back) hoping that perhaps I can give it one last shot. It seems to me that basing these backups on a diskimage is a bad idea because in principle you could lose a single bit and the diskimage will not mount (unless there's redundancy in whatever header information etc. it uses) and then you lose ALL your files. I would have thought that backing up as individual files would be more robust to occasional corruption. Anyhow, this is all very disappointing, and I've been in touch with an Apple rep I deal with to seek advice. Apple need to fix this. I don't know if it's a problem with Time Capsule, or Time Machine.

TC Error "The backup disk image could not be mounted."

My new time machine was working fine for a couple of weeks now I am getting this error message constantly. Does anyone have any suggestions what to do?
"The backup disk image could not be mounted."

I posted the same thing a couple of threads down, I deleted the back up then went into the time machine options and choose the time capsule option again and did another full backup and now it seems to be working properly.

"Backup disk image could not be mounted"

I have been using time capsule successfully for about 5 months. But now it has suddenly started returning a time machine error "the backup disk image could not be mounted".
Anyone got any suggestions?

towersfamily,
*_"The Backup Disk Image Could Not Be Mounted" (Console - “Failed to mount disk image”)_*
First, it is important to distinguish this error message from another, similar Time Machine error that states “The backup volume could not be mounted”. This is important as the causes and cures for these two errors can be very different.
Consider each topic below separately. When one option does not resolve your issue, then move on the next one.
*Unmount the Backup Disk Image* (TC)
If, for some reason, you have manually mounted the Time Machine backup disk image (sparsebundle), or Time Machine failed to eject it after the previous backup, subsequent backups may fail. (Console - “Failed to mount disk image”… “Backup failed with error: 21”)
Eject the backup disk image (white drive icon) by either clicking the little Eject icon to the right of the disk image in the Finders’ Sidebar, or Ctrl-Click the drive icon on the desktop and select “Eject” from the contextual menu. Now try backing up again or launching Time Machine to view previous backups.
*“Disconnect All Users…”:*
If your Time Machine backup drive (“Backup of Users Computer”) is mounted on your desktop or in the Sidebar of the Finder window. then Time Machine may think the drive is already in use. Alternatively, if the Time Capsule hard disk has been recently accessed by a Windows machine, it may not have fully relinquished control. Do the following:
Open Airport Utility and select the Time Capsule on the left.
Click “Manual Setup”.
Select “Disks” at top of window.
Click “Disconnect All Users…” at bottom of window.
Close the Airport Utility.
Now try Backing up again.
One poster reported: “I got it resolved. Apparently it had to do with one of the files being open on the disk from the drive. I had browsed the disk with one of my windows boxes here and it must have left one of the folders "open". Anyway, I rebooted the TC and we are good to go now.”
*Proper Computer Name* #
Make sure your computer has a proper name. Go to System Preferences --> Sharing. Time Machine needs to differentiate your computer from others on your network (i.e. "Bills MacBook" or "Office iMac"). If the "Computer Name" field is blank, create a name. Realize that if this step is necessary, you will likely have to start the Time Machine backup process over again and do another full initial backup.
According to this article, [http://support.apple.com/kb/TS1760], Time Machine may experience problems if your computer name includes certain characters. Make sure the computer name only includes ASCII characters from the following set.
(0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ)
Once a change in the computer name occurs, you should stop and restart Sharing on the affected computer. Uncheck and then recheck Sharing in the Services list on the left.
Let us know if any of the suggestions above helped to resolve your issue.
Cheers!

Disk image could not be mounted - error

Ok, I've been using TC (Time Capsule) for a week now, and it was working great. Then in the middle of the week I decided to change the password for TC. Now when I reboot my iMac, TM (Time Machine) will not back up and it gives me a failed - "the backup disk image could not be mounted" error. Then if I go to the AirPort Utility and reboot TC, all of the sudden TM works. Couple of days go by and when I reboot the iMac again, I have to do the whole process again of rebooting TC to get TM to work. Has anyone encountered this issue? I think I explained it well...

This happened to me too.
I called Apple (they'll talk to you for 90 days after you buy your Time Capsule and solve all your problems.)
The solution was to rename the Time Capsule. Here's how:
Open Time Capsule in System Preferences, click on Change Disk, and choose None from the list.
Open Airport Utility (choose Go from the Finder Menu, choose Utilities from the list, then Airport Utility), highlight your Time Capsule when its picture appears in the left side bar. Click Manual Setup in the main window, then the Disk icon on the top. Highlight the lower of the two names Time-Capsule Disk and change it to something short and one word, like Disk. Click Update, then close Airport Utility after your Time Capsule restarts.
Go back to Time Capsule Preferences and click on the Choose Disk button in the center of the main part of the window, then choose your newly-named Time Capsule (If you see more than one Time Capsule name there, restart your computer first).
This solved it for me. The guy on the phone said that in the tech help people's experience the Time Machine program doesn't like long names or ones with "higher" ascii characters in them.
Good luck.
jmb

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