Cannot mount .dmg downloads

ever since upgrade to Tiger I lost the ability to mount >dmg files. When I try to open them I get the same error message each tim.."these Disk Images failed to mount..reason ="broken pipe"!!
I cannot find this utility anywhere on my mac or Apple's site. Any help out there??
eric

See this discussion at MacFixit.
I did try extracting the package, and it worked as advertised. I selected a firewire drive as the destination. Just tried using this method to extract Firefox from its .dmg and the results were a little strange (the drive acquired the Firefox icon and window displayed the way the Firefox virtual drive would display when mounted). See this thread:
http://discussions.apple.com/thread.jspa?messageID=4397173
and this one:
http://discussions.apple.com/thread.jspa?messageID=4948821
I think you should download the COMBO 10.4.10 update for your machine, use the method described in the discussions above to extract the package to a firewire drive, the run the updater on your startup drive and see if that fixes the problem.
Francine
Francine
Schwieder

Similar Messages

Cannot mount a .dmg with a doube click

Hi,
Since a couple of months I cannot mount a .dmg by double clicking on it. I have to drag it first to Disk Utility and double click it there.
It is not very important but if anyone could tell me how to restore the original way, I would appreciate.
Intel core 2 duo, Mac OS 10.4.11

It can be done either way. In the 'Open with' dialog you can select the checkbox to always use the selected application, or, as you say, you can set it within the Get Info dialog. The two routes actually use the same underlying dialog if the currently set application needs to be changed.
Glad it fixed the problem!

Invalid checksum or cannot mount image errors with disk copy

I just upgraded my B/W G3 from OS9 to OS X.2 and only have Internet explorer 5.1 for Mac for internet browsing. I can't even access the Apple downloads page and alternate browsers download as .dmg files. When I click the download I am prompted to pick a location....(I tried to open the files directly through applications/disk copy and that option is grayed out; I can only save files to the desktop) so I saved the files to desktop and when I try to use disk copy to open them, I get either invalid checksum or cannot mount image errors. I am a brand new Mac user and understand this is not Windows and all and I understand the process of dragging the icon to the apps folder, but I can't get that far, I am getting these errors and can't figure out what I'm doing wrong, the icon that appears on the desktop after the download is an image of a hard drive, but on a sheet of paper, not an image of a hard drive itself.
I think this has to do with the errors, but don't know where to go from here. Any suggestions?

a few updates-corrections:
I am running OS 10.1 with the latest update being 10.1.5
I have upgraded the RAM to 896 mb with some memory chips I got from Ebay...worked like a charm!
The only browser I can get to install and run is Camino, which crashes sometimes but is way better than IE5 for Mac
The majority of downloads I find on the internet stil give me the cannot mount image error
I tried the firmware update but it wants OS9 installed....but I am pretty sure I ran that before I installed OS 10.1.....OS9 still exists on my hard drive, but is not accessable in 10.1
When I can get an image mounted, a lot of times the program loads in the dashboard, but immediately closes out
With all these issues, I am considering upgrading to OS 10.4 but am hesitant since I don't know if that is the core problem
This old Mac is really cool and a refreshing change from Windows and I don't want to give up on it, but I don't want to keep spending money on things that don't work.

Cannot open DMG files

Hello. I cannot open DMG files. I have had the problem with a download of Adobe Photoshop and the Combo Update for Mac OS 10.4.10. I have re-downloaded both files.
(When I download, I am getting two separate files for each, one dmg, and one dmg.part, which the OS seems to think is a quicktime movie file. Is this normal? I don't remember.) Anyway, this is the error:
The following disk images failed to mount; name of file, not recognized.
I have tried most of the fixes found on the site, and none of them have worked for me. Here is a short run down of what I have tried:
Running Disk Permissions Repair
Restarting
Opening from Stuffit
Opening from Disk Utilities
Opening from Mount (downloaded from Internet)
I thought that I read that downloading the Combo Install would fix the problem with the Disk Mount, but I cannot open that either.
What should I do?
I appreciate any help!

the different type of file shttp://www.adobe.com/support/downloads/product.jsp?product=39&platform=Macintosh

Cannot mount any firewire/USB external drive after software update 10.5.4

After the last software update on 10.5.4 it did not complete the installation, and get stuck at the last step of running installation script for hours. So I have to restart the computer, and it restarted fine. Then I use Disk Utility to check my hard disk, and discovered some file system inconsistency error, so I repaired it (in target disk mode by another Mac). After it is repaired, the file system passed with no error.
But ever since then, I cannot mount any external firewire drive or USB drive. I cannot use Time Machine to backup my disk. I think my firewire and USB ports are fine because I can restart my iMac in target mode and connect to my MacBook via firewire, so the hardwire ports are functional, except that it seems 10.5.4 cannot detect or mount any external drive after the failed software update.
Does anyone encounter similar problem? How can I fix it? I have my disk backed up by TimeMachine but I cannot restore it if it won't let me mount my TimeMachine disk. Is there any other way other than completely reinstall 10.5 from scratch?

first, you should try reinstalling 10.5.4. download the [combo update|http://www.apple.com/downloads/macosx/apple/macosx_updates/macosx1054com boupdate.html] and run it. If that doesn't fix the issue, you can use full system restore from TM to go back to a time before the troubles started. to do that boot from the leopard install dvd, once past the language screen go to the Utilities menu at the top and choose "restore from backup".

Disk Utility says everything's fine, but Install disk doesn't find my internal drive as a possible destination. When I startup with Command S, I get a looping "cannot mount errno = 19" message.

Disk Utility says everything's fine, but Install disk doesn't find my internal drive as a possible destination. When I startup with Command + S, I get a looping "cannot mount errno = 19" message.
Problem started when I used Tech Tool Pro 6 to "de-fragment volume". Had to cancel that process before it finished because I ran out of time. Thereafter, when I startup my machine normally, I get the gray Apple logo at first, but it changes to a prohibited symbol (circle with a slash thru it) and hangs.
When I startup holding the Option key, I can see my internal drive, but I get the same results as above.
When I startup using the MacBook OSX Install DVD, it does not find my internal drive as possible destination.
When I startup using the MacBook OSX Install DVD and then run Disk Utility, it finds my drive, allows me to "repair" and says everything is fine.
When I startup with Command + S, I get a looping error message "errno = 19" and cannot stop it to do anything else.
When I startup from Disk Warrior v4.4, it does not find my internal drive to do any repairs.
When I startup from Tech Tool Pro 6 and run the "computer check" diagnostics, everything passes but the Volume Structure, which fails at "Volume Extents (B-tree)." When I use TTP's "Tools" option to run "volume repair" it will show my internal drive and allow me to click the GO button, but nothing happens and nothing changes.
I have a Time Machine backup on an external USB drive, but for as long as the internal drive doesn't mount, I can't use the backup to restore.

It's a false report and should be ignored.
I would not rely on TT as I've already said earlier even before Grant posted similar advice.
I really think the Rigid Disk Block may be corrupted. This holds the partition map and could prevent a volume from being unmounted. Unfortunately, there is no way to fix that without repartitioning the drive which will remove everything. So, before going down this road I hope you have backups or can make a backup.
Drive Partition and Format
1. Boot from your Snow Leopard Installer Disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu.
2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in DU's status area. If it does not say "Verified" then the drive is failing or has failed and will need replacing. SMART info will not be reported on external drives. Otherwise, click on the Partition tab in the DU main window.
3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Click on the Options button, set the partition scheme to GUID then click on the OK button. Set the format type to Mac OS Extended (Journaled.) Click on the Partition button and wait until the process has completed.
4. Quit DU and return to the installer. Proceed with reinstalling OS X.
5. Download and install Mac OS X 10.6.8 Update Combo v1.1.

Cannot Mount Any ISO in Windows 8.1 Pro

I cannot mount any ISO images on my Windows 8.1 Pro machine. I have tried the "Mount" under right-click as well as Powershell with the same results. From the UI, I get a simple message "Sorry there was a problem mounting the file."
while from Powershell I get an HResult that from searching seems to be rather generic.
I have followed the idea about upper filter and lower filter. I have made sure that the ISO is not "sparse". I made sure that ISO's are associated with Windows Explorer. I have tried a number of ISO's all from either TechNet or MSDN
with the same results. ProcMon doesn't really offer anything useful as the number of entries is overwhelming to try to limit to just mounting an image.
I read several posts where drive letters were an issue, but no guidance was given regarding what drive letter the virtual drive preferred.
I can mount the same ISO files on another Windows 8.1 Pro machine, so it isn't the ISO itself.
Any ideas? I have spent the entire day working on this problem and I really need some help.
Thanks,
Glen

I was struggling with this too. I found that the problem is a 'sparse' attribute that gets added by the Akamai downloader (known bug). To fix just copy the ISO (and the VHD) files to another folder this removes the (P). I found the answer at:
http://serverfault.com/questions/424794/fail-to-mount-image-files-in-windows-server-2012
Rusty
Rusty Brown
I have used mounting ISO images, sparce files and so on. No issues.
this suggests its time for a fresh install of windows, backup twice in case of the unthinkable
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Hardcore Games Legendary is the Only Way to Play!

10.9: cannot mount westerndigital drive usb3 external, but in 10.8 yes

please why is my text shown on white background? can i change this?
i could not mount my 2 external wd drives (mypassport 2,5" 2TB)
(USB3.0) since install of 10.9 on my 2 brand new macs. (imac 27" i5 late 2013 and mbair i7 mid 2013)
before, with 10.8 it worked fine!
i thought the wd drive is faulty, so i got a new one by warranty, and sent the "old" back. it took only 5 days to get the swap by wd.
i could not mount the new drive either under 10.9
but today i installed techtool pro 7.0.2, did nothing but a reboot and after that, i plugged it into my imac with 10.9, it mounted correctly on my imac, the first time ever! and showed a techtool symbol as drive symbol instead of the orange colored usb symbol.
appearantly techtool pro 7.0.2 installed something into 10.9 which helps the system mount discs?
- i never did lock the drive with the wd security app
- before that, i tried to remove all wd related stuff and uninstalled every single wd app and driver, still no mount !
- before that, apple disctools under 10.9 did not show the drives in the left column, as no other harddisc app did. (drive genius)
- i can mount both drives on the old mbair with 10.8, my wife´s mac
- wd drive utilites would show the disc, but not mount, if i tried to format it, it showed an error after 1min: cannot format disc,
as it cannot be mounted. (or so..)
- now, after install of techtool pro 7.0.2, when i plug the drive into my imac, it is mounted correctly, but there is
always another volume mounted by default "wd drive unlock volume" which says "your wd drive is not locked, so you can not unlock it)
weird?
i still cannot mount the wd drive on my new macbook air with 10.9,
etre check lists as difference:
imac:
Kernel Extensions:
com.wdc.driver.USB.64.10.9 (1.0.1 - SDK 10.9) (today mount possible for the first time since weeks)
macbook air:
no wd driver at all (and no mount possible)
any idea?
thanks
Message was edited by: peppermint

first, you should try reinstalling 10.5.4. download the [combo update|http://www.apple.com/downloads/macosx/apple/macosx_updates/macosx1054com boupdate.html] and run it. If that doesn't fix the issue, you can use full system restore from TM to go back to a time before the troubles started. to do that boot from the leopard install dvd, once past the language screen go to the Utilities menu at the top and choose "restore from backup".

Unrecognized Filesystem error when mounting dmg

Ok. So my problem is this.
My MacBook Pro became unresponsive, when I booted, it gave a question mark on the white screen instead of starting Snow Leopard. Still don't know why, but that isn't really important now.
When this happened I got my snow leopard cd, put it in, and made a .dmg of the drive, just in case I could retrieve something. Then proceeded to format the drive.
Now, when I try to mount the .dmg, the finder says: unrecognized filesystem. Cannot mount it through the terminal either. I am wondering, is there anything I can do? I am not really versed in the terminal commands so I am not sure what is possible at this point. I would really like to get my data back though.

[DiskWarrior|http://www.alsoft.com/DiskWarrior/index.html] may be able to repair the disk image, if the problem is simply a damaged disk image. If it's something worse than that, you may not have any luck.
How did you make the disk image? If you selected your hard drive, which was damaged, and clicked New Image, you've probably just created an image of a damaged disk, which may or may not be repairable. In the future, a more appropriate way to create an emergency backup in this situation is to use the Restore tab in Disk Utility. Despite the name, it does both backups and restores... not the kind of thing I'd want to rely on for everyday backups, but it's good for emergencies.
Of course, you'd be better off to never let yourself get into that situation. Start backing up regularly. If you're not sure how, take a look at my [Mac Backup Guide|http://www.reedcorner.net/thomas/guides/backups>.

Unable to mount *.dmg's

After installing the latest Bluetooth Patch (obtained via Software Update) on my PowerBook G4 Ti running OSX 10.4.3, whenever I try to open any disk image file (*.dmg file), I get the following error:
Warning
The Following Disk Images Failed to Mount
Image
filename.dmg
Reason
no mountable file systems
I've tried several *.dmg's, all with the same result.
Also, the Disk Utility doesn't seem to report any issues with the actual *.dmg...I am able to view the partitions within the images.
In fact, after clicking Mount from within the Disk Utility repeatedly, the *.dmg file occasionally will mount.
Additionally, opening the same exact *.dmg files on my other macs running OS X 10.4.3 works fine.
I have booted off the OS X 10.4 DVD and repaired permissions without any luck.
Also, there are no errors on the drive according to the Disk Utility.
I was able to mount *.dmg files immediately before installing the bluetooth patch (witch was applied successfully)
Also, attempting to mount the same *.dmg files in Terminal causes that bash session to hang.
I have no issues with mounting CD's/DVD's, HD's, or Network Drives...only *.dmg's.
Anyone have any ideas? I am stumped.
PBG4Ti,iMacG5 Mac OS X (10.4.3)

I have had a number of issues after the 10.4.4 software update:
1. Safari windows won't close by clicking the red X
2. Can't mount disk images
3. Can't launch applications from the Finder window (Finder re-launches itself when I click on any application...not even double-click, single-click)
All issues went away after I downloaded the 10.4.4 combo patch, used Disk Utility to burn the image to a CD (I had to drag the Disk Utility.app to my desktop and then launch it since I couldn't do that from the Finder window.), and then ran the package installer.
Good luck!
Joel

Cannot open dmg files in mavericks

After installing Mavericks on my iMac I cannot open dmg-files. All that happens is that the system tells me "The following disk images couldn't be opened", with the reason "no mountable file systems".
Now, all I can find when discussing this issue is that "your download is corrupted" or "check your disk" or "reinstall Mavericks!". I have checked and rechecked the files, they are complete and should work. My disk is checked and I have reinstalled Mavericks but nothing happens.
It seems to be a fairly new/rare problem, I can't find any discussion on this problem elsewhere...

I'm having the same problem. I don't have any answers. But here's some information about what I'm seeing that might help someone sort this out.
I recently upgraded to Mavericks
Both newly downloaded dmg files and ones that were downloaded and sucessfully opened under a previous version of OS X cannot be opened now
I have two user accounts on the same machine. On one I can open dmgs without problem. On the other I get the error.
I'm using the same browser (chrome) on both accounts to download the same disk image, with different results.
Both accounts are admin accounts
I transferred the disk image that opened properly on my main account to the second account's ~/public/drop box folder and the second account could not open the image.

DMG Download Corrupted

There have been many posts with users expressing problems getting DMG's to mount. "Invalid Checksum" or "Codec Overrun" errors are common.
I am experiencing problems with large (> 10MB) DMG files that I download either from Software Update, Safari or FireFox. Since I've got two Macs, I've been able to do some testing. Here's what I've found:
Mac 1 is running 10.4.4. It has the DMG download problem.
Mac 2 is running 10.4.4. It's working fine.
If I download DMG's on Mac 1, I will receive an "Invalid Checksum" error and they will fail to mount.
If I download DMG's on Mac 2 and copy them to Mac 1, DMG's mount fine - no problem.
If I download DMG's on Mac 1 and copy to Mac 2, I get "Invalid Checksum" errors. (Thus, this is how know that the DMG's are arriving corrupted).
If I log in as "root" on Mac 1 and try downloading, I get the same corrupted DMG's (I looked at the checksum using DiskUtility). So, I know the problem (most likely) does not lie within the realm of my user folder.
So, the DMG's on Mac 1 are downloading improperly. This smells like a network transfer issue, but, I don't know where to start. There's probably a file that's bad, somewhere.
If anyone at Apple reads these emails, or, if there's anyone with some suggestions as to what I could try, please respond. I would like to get this issue resolved and post something to help others with the same problem.
PowerBook G4 and PowerMac G4 Mac OS X (10.4.4) "Invalid Checksum" "Codec Overrun"

Seconding this, I'm having the same experience. I maintain my machine religiously, running DiskWarrior on a regular basis, using MainMenu to clear caches and such. But I also get frequent, if not constant, checksum errors on large DMG files. Any help would be greatly appreciated.

I cannot open dmg files with Yosemite

So installed Yosemite. All seemed fine but
I now cannot open dmg files. If I double click on them, nothing happens. If I say open with "diskimagemounter" nothing happens. If I say open with Disk Utility it says wrong version of Disk Utility. If I move them back to a computer with Mavericks, they open fine. Repaired permissions and no change.
What do I do please?

Reinstalling OS X Without Erasing the Drive
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.
Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu.
Reinstall OS X: Select Reinstall OS X and click on the Continue button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.
Download and reinstall the 10.10.1 update.
Also see:
Reinstall OS X Without Erasing the Drive
OS X Yosemite- Reinstall OS X
Note: You will need an active Internet connection. I suggest using Ethernet
if possible because it is three times faster than wireless.

Cannot mount .cdr

Hey all
Have a problem: cannot mount a .cdr image file. I get the message:
"Image isn't recognized"
I'm mounting on a iBook G4 with Leopard.
Any suggestions?
CCKolling

Found out myself -> all the .dmg and .cdr's had been damaged. nothing to do with the computer.
CCKolling

Sol - Intel - cannot mount root - J Keil

J Keil,
Some how my first messages were deleted off your site - none the mater.
As you suggested, I changed target hard drive to Sec Master and Cd to Sec Slave. Like before I get a similar message, from the install CD:
Cannot mount root on /pci@0,0/pci-ide@7,1/ide@1/sd@1,0:a fstype ufs
panic[cpu0]/thread=fec17540: vfs_mountroot: cannot mount root
I downloaded CD 1 again, burn't image - I still get "Cannot find boot.bin." Error message.
Phil

I copied this over to the intel install board. Sorry
I lost it

Cannot mount .dmg downloads

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