.dmg file is using 20+ gigs!!

I am trying to figure out what is using up so much space on my had drive. Getting info on files and so on. Not to bore you, but my user folder was 32 gigs, in ti, my apple folder 31.5, in ther the library folder 25.5, in there the mirror folder is 23, and in the mirror folder is a .dmg file at 20+ gigs! Can you tell me is this something I need? Thank you so much for any assistance. ( I store all of my photos, music and data on an external hard drive).

A dmg file is a "disk image" file. It may be a file downloaded from the internet or one created by Disk Utility. Before deleting it, find out what's on it by "mounting" the image file (double-click the file to open it and it will display as a disk in the finder). Once you have determined what is in the file, then decide whether to delete it, copy it to a cd/dvd, or keep it on the hd.

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What to do with dmg files after use

I've been keeping dmg files in the Shared user folder after downloading the application. I guess I was thinking this was because I didn't have an actual disk in case I needed to reinstall. Now I'm getting a new iMac and want to set it up right. Is it OK to do this? Or should I copy the dmg file onto a CD?
Thanks!

a brody wrote: No. But there is also a data loss bug that affects 10.6 and 10.6.1 when it comes to using it with Snow Leopard and PowerPC. I'd rather not venture that path if I don't have to.
Been trying to find out about that. Searching around for "data Loss bug," saw some items related to "Guest account bug," but can't find anything connected to using PPC with Intel. Can you possibly provide a link where I might read more about that?
And curious to know if you know if this specific bug, which would, seemingly, have potentially affected all users, was fixed with 10.6.2 or 10.6.3?
from Wikipedia Article: A bug in Mac OS X versions 10.6 and 10.6.1 which, in rare cases, caused loss of user account data after use of a previously-existing guest account by users ...
If it was only 10.6. to 10.6.1, even if it is PPC-Intel related, +and if it's been fixed+ , don't see why it would apply to someone Migrating to a new computer, which would almost certainly ship with, at least, 10.6.2 and maybe 3.
Message was edited by: WZZZ

DMG file for use CS-10 in a MAC

Hi all,
Does anyone have the DMG file to install the CS-10 in a MAC? It seems this file is missing in the CS-10 internet modem.
Regards,
Solved!
Go to Solution.

Hi everyone,
So sad because Nokia's lack of support of CS-10. I am currently sending to trash my CS-10 and going to buy a HUAWEI usb modem. I tested HUAWEI internet modem with my MAC and everything is working fine now. Pretty sure never buy a Nokia device again.

Anyone know how to repair a corrupted .DMG file? I recovered the file using Disk Drill. There are actually 4-6 files I have encrypted into a DMG - now they are back on my desktop (deleted them months ago) and the size is correct (between 500-900 MB each)

I deleted several .mov files a while back that were encrypted into a .dmg file. Using Disk Drill, I was able to recover 5 of these files, roughly 500-900 MB each and successfully moved them to my desktop. When I try to open the .dmg file, the dreaded error message "no mountable file systems" shows up. I have tried various fixes based on searches and none have worked. Are these files just corrupted and unreadable, or is there a way to fix?

Thanks for the obvious question. I mean it. The very same thought came to me this morning and, sure enough, I had booted into another drive--my old one that, of course, had the old desktop, etc.
It didn't dawn on me that this was the case since I hadn't set it as a boot drive but I guess in the course of all the restarts I did, it got switched.
I'm back to normal again.

Grey Screen, won't boot from usb. Only have a PC to create a boot USB. How can I reinstall OSX with a .dmg file?

I recently recieved a macbook that I was told was broken. She didn't know what was wrong with it, but she told me I could keep it if I wanted to get it working again. Its http://support.apple.com/kb/sp579 this model. I got the laptop to power on, but the apple logo and the spinning wheel under it kept spinning forever. So with me and my "Amazing" knowledge of Macs, I thought it would be best to reformat the drive on my PC via sata cable to FAT32 (which I was told is a format that mac devices can read/write on) and install OSX from usb. So I have a .dmg file and used TransMac to format the usb and make the usb drive bootable with the .dmg.
I formatted the drive to FAT32 and plugged it into my macbook and I get a folder and a question mark blinking on the screen. After looking at some forums online, I found that the error occurs when you don't have the correct filesystem to boot or something along those lines. So I try rebooting the computer while holding C, to boot from an external device (such as USB). Nothing. Again the folder and question mark blink on the screen. I look at some other boot option keys and try all of them. Shift for recovery mode, D for apple hardware test, Control, option, P, and R for resetting NVRAM and PRAM. Everything! The only things that differ slightly are when I press Option for startup manager, N for NetBoot and Option+N for internet default boot image. When I press N and Option+N, I get a blinking globe for about 5-10 seconds and then the folder and ? blink again. When I hold Option for the startup manager, I get a white screen and my curser, which I can move around the screen, but there is nothing to click on, its just white.
Currently I have a USB flash drive plugged into the macbook with a .dmg OSX installer on it via TransMac and for some reason, my macbook doesn't want to try to load it. Either I have the wrong file format for the installer, or my macbook is having problems. I read that the hard drive may be the problem, except I can use it on my PC so I know that it works fine.
If anyone has any information about how to fix this, or any ideas. Please let me know! I would very much like to get this macbook going again.

The correct format for Mac OS X is not FAT-32.
As the computer shipped with an install-restore disc DVD set that could be used to start the computer as an emergency disc and use the Utilities on the Installer, without running the Installer itself, to format, attempt repair, and perform a few different system installs or reinstalls, this is where the correct format would come from.
Was there documentation to confirm the build year and model information, such as to refer you to the product page link you posted above?
If accurate, that MacBook shipped with this custom grey
install-restore DVD version of Snow Leopard:
Original OS
Mac OS X 10.6.1 (10A2047)
Maximum OS
Latest release of OS X
AirDrop
Supported
Hardware Test
AHT 3A181
And to be able to restore the basic OS X to that level, official replacement discs for that computer should be ordered from AppleCare; to facilitiate obtaining correct ones, you should find the product serial number. There likely would be a fee involved. The replacement disc set may have a different number than the one in the information box above, but would match the hardware series by Apple standards. And a replacement disc may not have the original extra applications that shipped with the computer when new. Those original discs are part of the retail computer, an essential part number, like the power adapter, and should be included with the computer even after an OS X upgrade, since they allow basic access without using the internet.
The remainder of the Snow Leopard 10.6(.8) would be a download Software Update Combo v 10.6.8, either direct from Apple servers or through the computer's running Software Update. Once the computer is up to date in Snow Leopard, 10.6.8, then one could visit the Mac App Store, App Store, and iTunes Store; from the Mac App Store, and you could check/get the latest upgrade to Mac OS X, 10.9.2. An Apple ID is required to access.
The computer may not support Mavericks 10.9.2, or may be able to, but could use an upgrade of RAM capacity.
If your model and build year series info is correct:
Maximum Memory
8.0 GB (Actual) 4.0 GB (Apple)
Memory Slots
2 - 204-pin PC3-8500 (1066MHz) DDR3 SO-DIMM
For more information see the database download http://mactracker.ca
and also compare specs with macbook models at everymac.com.
The newer OS X systems that can use a Recovery HD partition on the hard disk drive, can start from there to repair their hard disk drive, and reformat the section where the Mac OS X runs, and reinstall that. Since there is no likelihood of that still being on the drive once it was FAT-32 reformatted, it will not be present to assist in attempts to reformat the drive; if the computer had been upgraded past Snow Leopard 10.6, to a later system that would have used the recovery partition, or the later internet recovery system. That goes to Apple Servers to use OS X Utilities and reinstall the system, helpful for computers without optical drives or system media. Your MacBook with 10.6.8 installed, then had to access the Mac App Store, to get 10.7.5, 10.8.5, or 10.9.x
Identify your Mac lookup by model number or serial number:
https://www.powerbookmedic.com/identify-mac-serial.php
Anyway, the hardware in the computer may need some inspection, troubleshooting, and maybe repair; but the original DVD install-restore disc has an Apple Hardware Test on it, for that series build model macbook. That could help in troubleshooting some aspects of the computer. Could be the hard disk drive failed; or if someone tried to upgrade the RAM, the system may not have worked correctly. Hard to say how it was messed up, at this stage. There are several possible causes.
Hopefully you can get the correct disc set from AppleCare.
You can call Support number, or use Contact Support page.
Good luck & happy computing!

Can't mount a .dmg file I created yesterday. "invalid argument"

I created two encrypted .dmg files yesterday using Disk Utility. They both mounted just fine yesterday and I haven't touched them since. I just now went to mount one of them again and it said "the following disk images could not be opened. (name).dmg reason: invalid argument.
I've seen some articles in here about the "invalid argument" error coming up on .dmg files created by a 3rd party, but the advice seems to boil down to "get a new copy of the disk" but obviously these are things I created myself so there are no other copies. And I deleted the files that I put on the .dmg's after I tested them yesterday and they both seemed to work.
Any suggestions?

Update: I shut the computer down last night and restarted it this morning, and it worked. But does anybody know what happened so that I don't repeat it?

The difference between a .dmg file & a .cdr file (using Disk Utility) ?

Hi,
In particular, I created both from a DVD using Disk Utility.
When I chose "read only" a .dmg was created.
When I chose "DVD/CD Master" a .cdr was created.
They are exactly the same size.
Is there any difference ?
Thanks in advance.
Pat De Marco

HI Pat,
From Wikipedia: A file with the extension .dmg (an abbreviation for disk image) uses a disk image format commonly found on Mac OS X. The format allows secure password protection as well as file compression and hence serves both security and file distribution functions. Its most common function is the distribution of software over the Internet. When opened, DMG files are "mounted" as a drive within the Finder.
From: Wikipedia .cdr and ISO
ISO image
Filename extension .iso
Uniform Type Identifier public.iso-image
Type of format Disk image
Standard(s) ISO 9660
An ISO image is an archive file (a.k.a. disk image) of an optical disc using a conventional ISO (International Organization for Standardization) format that is supported by many software vendors. ISO image files typically have a file extension of .ISO but Mac OS X ISO images often have the extension .CDR. The name "ISO" is taken from the ISO 9660 file system used with CD-ROM media, but an ISO image can also contain UDF file system because UDF is backward-compatible to ISO 9660.
Carolyn
Message was edited by: Carolyn Samit

I am having trouble with replacing my old Firefox version 3.6.3 with the new 9.0 version on my Macbook. I have it downloaded as a dmg file, but I keep getting a message that the opertion cannot be completed because the item Firefox is in use...HELP!

After having the issue with my photos being blocked on Facebook, I was told I needed to upgrade to the newest version of Firefox and that the version I am currently using (3.6.3) is no longer supported with security updates. I have tried to follow the steps in the upgrade process through Firefox itself, but have been unable to do it...I would love step by step instructions to walk me through it as I don't know what I am doing wrong.'''bold text'''

If there are problems with updating or with the permissions then easiest is to download the full version and trash the currently installed version to do a clean install of the new version.
Download a new copy of the Firefox program and save the disk image (dmg) file to the desktop
*Firefox 9.0.x: http://www.mozilla.org/en-US/firefox/all.html
*Trash the current Firefox application to do a clean (re-)install
*Install the new version that you have downloaded
Your profile data is stored elsewhere in the Firefox Profile Folder, so you won't lose your bookmarks and other personal data if you uninstall and (re)install Firefox.
*http://kb.mozillazine.org/Profile_folder_-_Firefox

Using Mac OS 10.8.5 why won't disk image from Utilities mount to open a .dmg file?

Using Mac OS 10.8.5 why won't DiskImage from Utilities mount in order to open a .dmg file?

Select the .dmg file and double-click it. FWIW, there's no DiskImage thing in Utilities on any of my boot volumes.
27" i7 iMac (Mid 2011) refurb, OS X Yo (10.10), Mavs, ML & SL, G4 450 MP w/10.5 & 9.2.2

How do you use a dmg file image to download windows through boot camp?

after reaching my limits in finding the answer to this problem/question i have, i finally decided to post it for everyone to feel my pain
so i dont know if i would be spanked or something but i downloaded a windows xp sp3 from the internet through torrent
it was originally an iso file so i changed it to a dmg by using disk utility
now heres the problem:
after that, i opened the dmg file image and mounted the virtual drive
then when i started up the boot camp installation and clicked the "Start Installation" after about fifteen seconds it said that it couldn't find any disk installers!
AARRGG
it would be awesome if someone could help me
and this other question that i did not mention above is:
when you run windows xp on Parallels, is it slower than when you use windows on a PC or through boot camp?
thanks and hope you have a nice day

Hi and welcome to Discussions,
so i dont know if i would be spanked or something but i downloaded a windows xp sp3 from the internet through torrent
I don't spank you for that but I also don't comment on it as maybe this post will be deleted soon !
it was originally an iso file so i changed it to a dmg by using disk utility
now heres the problem:
after that, i opened the dmg file image and mounted the virtual drive
then when i started up the boot camp installation and clicked the "Start Installation" after about fifteen seconds it said that it couldn't find any disk installers!
The BootCamp Assistant requires Windows to be on a bootable CD/DVD and will not work with any kind of images, iso or dmg.
when you run windows xp on Parallels, is it slower than when you use windows on a PC or through boot camp?
Yes, since it is not running 'natively' , using the real hardware, but it is running on a virtualized environment.
How much slower really depends on the kind of programs you use in Windows, with typical Business/Office programs you might not even notice any slower performance, but with programs that depend on having access to the 'real' hardware, you will notice the slowness often right down to be un-useable.
thanks and hope you have a nice day
You too
Stefan

How to use a .dmg file in Arch Linux

I have a file a friend gave me from his Mac computer with a .dmg file name. I haven't been able to pinpoint exactly how to use this type of file... I believe its an Apple raw disk image or something like that.. sort of like an iso. I need to use this file in order to start an application and download it onto Arch Linux. The problem is that I can't figure out how to use it on Arch Linux and burn it onto a Cd. Has anyone had experience with this sort of thing? I am completely lost.

$ poweriso convert ~/Downloads/lang.rar/Rosetta_Stone_3.4.5.dmg -o ~/Downloads/lang.rar/rose.iso -o t
PowerISO Copyright(C) 2004-2008 PowerISO Computing, Inc
Type poweriso -? for help
/home/user/Downloads/lang.rar/Rosetta_Stone_3.4.5.dmg: The file format is invalid or unsupported.
$
$ poweriso -?
PowerISO Copyright(C) 2004-2008 PowerISO Computing, Inc
Type poweriso -? for help
Usage: poweriso <command> [parameters] [-switches]
<Commands>
list <image file> <directory> List files and directories in image file.
Example: List all files and directories in root direcory of /home/sam/test.iso .
Command: poweriso list /home/sam/test.iso / -r
extract <image file> <dir/file name> Extract files/directories from image file.
Example: Extract all files and directories in root direcory of /home/sam/test.iso
to /home/sam/test recursively.
Command: poweriso extract /home/sam/test.iso / -od /home/sam/test
convert <image file> Convert image file to other format.
Example: Convert /home/sam/test.daa to standard iso file
Command: poweriso convert /home/sam/test.daa -o /home/sam/test.iso -ot iso
<Switches>
-r List or extract recursively.
-o Specify output image file name.
-od Specify output folder.
-ot <iso|daa|bin> Specify output image file type. If not specified,
the image type will be determined by file name suffix.
-volsize <n> Split output image file to multiple volumes, and set volume
size to <n>. Example: -volsize 100M
-setpassword <password> Set password for output image file.
Example: -setpassword 12345678
$
I tried to convert the file .dmg to an .iso so that I can easily burn that onto a disk and get the ball rolling.. am I missing something here?

How to use osx dmg file

i recently purchased the OSX Lion and downloaded the dmg file. How do I use that file to upgrade my current osx?

Double-click on the .dmg file to mount it on the Desktop. Double-click to open a window on the contents of the mounted disc image. Drag the installer application to the Desktop from the window. Unmount the disc image. Save a copy of the installer in your Downloads folder. Run the installer.

How do i uninstall "Easy Duplicate Finder"?? its in the trash but won't go away... i never ran the .dmg file, but trash says its in use!

Hi .. i was trying to free up some space on my early 2009 mac mini, and i downloaded the Easy Duplicate Finder 3rd party thingy... i never ran the setup.dmg file and i tried to throw it away, but i can't empty it out of my trash because it says its in use (which worries me!)
i do have ext. backup using Time Machine... is that my solution? i just set that up about a week ago, but I'm such a computer dummie... I've never used it before....
i hope someone can help!
thanks in advance!
-karl

Other than an occasional restart, OS X tune-ups are not necessary or required like in Windoz.
It is best just to enjoy your Mac and don't try to fix something that isn't broken.
If you seriously need to free up some Hard Disk Space...(you never said how full it is)...? Your best bet it to move something like an iTunes, iPhoto or iMovie Library to an External Hard Drive. Problem is, that requires at least two or more External Hard Drives, so that your Library(s) are also backed up.
iTunes for Mac: Moving your iTunes Media folder
iPhoto: How to move the Library folder to a new location
iMovie '11: Copy or move a project to an external hard disk

How to install .pkg or .dmg file on Mac using AIR NativeProcess like .exe on windows?

Hi,
I want to install a application on Mac which is in .pkg installer using AIR NativeProcess. I am able to install the .pkg file by double clicking on OS but not able to run that using AIR NativeProcess.
I am able to install the .exe on windows using AIR NativeProcess.
When I tried the same process for .pkg on Mac got the following error:
ArgumentError: Error #3214: NativeProcessStartupInfo.executable does not specify a valid executable file.
I am using:
AIR 3.4 SDK
Flash Builder 4.7 (beta)
Tried packaging on both Windows and Mac OSX 10.8.
Is there any way to install .pkg/.dmg file using AIR NativeProcess?
Thanks in advance.

A year later, but others may have this problem.
You don't want to use NativeProcess to do this.
You need to 1) mount the DMG and then 2) launch the PKG
The PKG is very simple to launch :
// where 'installer' is a flash.filesystem.File that has resolved to your PKG file
installer.openWithDefaultApplication();

How do i get files larger than 2 gigs on a usb drive and still be able to use on a mac and pc?

how do i get files larger than 2 gigs on a usb drive and still be able to use on a mac and pc?

You can format the drive using ExFAT or you can format the drive NTFS then use third-party software on the Mac to enable writing to it: NTFS 11.2.443.
Disk Utility 12.x- Format a disk for Windows computers

.dmg file is using 20+ gigs!!

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