I would like to install the dmg java package in my MAC OS through the terminal I tried using this command: sudo installer -package jdk-7u51-macos-x64.dmg -target / But I receive this error: ins. Mar 26, 2016  (if you don't find those files, you are in the wrong Library folder.) Quickest way to your user Library is from the Go menu in the Finder, while holding your Option key. Drag those files to your trash. Log out and log back in to your user, or simply restart your Mac.

1. Open Dmg File Mac Terminal 3
2. Open Dmg File Mac Terminal 7
3. Download Mac Os Dmg File

I ran into an interesting macOS error while working with a customer a couple of weeks ago. I didn't find a lot of good search results addressing the issue, so I decided to write up a post about it myself.

The error was as the screenshot above shows; trying to open a dmg (disk image), macOS showed the error 'no mountable file systems'. If you see the 'no mountable file systems error' while opening a dmg, here's what you should try:

1. In most cases, the downloaded dmg file is actually corrupt or had an error downloading. If possible, try downloading the dmg again, turning off any download assistant plug-ins you may have. You can try downloading the file in a different browser as well. Or if you don't need to be logged in to the site to download the file and you want to be fancy, you can try curl -O url in Terminal to download the file. (There's an example of that in my screenshot below.)

2. Reboot your Mac if you haven't already tried that. Apparently there is an issue sometimes after opening too many dmg files, that is fixed with a reboot.

3. Try mounting the DMG on the command line in Terminal. We will at least get some sort of useful error message to go on if it still fails:

   • Open Terminal: In Spotlight, the search magnifying glass at the upper right corner of your screen, search for Terminal, and press enter to open the Terminal app.

   • Type hdiutil attach -verbose into the terminal. Add a space at the end, but don't press enter yet.

   • Drag the dmg file from your Finder window onto the Terminal window and let go. This will fill in the location of the dmg file into your Terminal window.

   • Press enter.

4. macOS Sierra (10.12) and earlier is not able to mount the new Apple File System (APFS). So if you're on macOS Sierra (10.12) or earlier and you ran hdiutil and see references to Apple_APFS or error 112, the issue is likely legitimate incompatibility, and this disk image won't open on this Mac without an update to the operating system.

   Here's an example of the end of hdiutil attach -verbose output that shows an APFS error due to an older version of macOS:

5. Think about if you have any kind of security policies on this machine to prevent writing to external drives (thumb drives, optical drives, etc). I haven't seen this one in action, but I read about this being a possibility while researching the issue.

6. Another suggestion added by a reader (thank you, Markus!) is that filesystem errors on your main Mac drive could be the cause of the disk image mounting errors. Here are instructions from Apple for scanning and repairing errors using Disk Utility. Note that in order to scan and repair errors on your main Macintosh HD drive, you'll need to reboot your Mac into recovery mode. You'll want to choose Disk Utility in the utilities listed in the recovery mode menu.

7. A new discovery from a reader (thank you, Colby!) is that APFS DMGs won't mount if you're booted in macOS booted in Safe Mode. (Who knew!?!) If you're not sure if you're in safe mode, select the Apple menu  > About This Mac > System Report button, then select the 'Software' heading from the left column. To exit safe mode, restart your Mac, without holding Shift during startup. Or, if you previously set your Mac to always boot into safe mode using nvram, turn off safe mode and have your Mac boot normally on the terminal:

   Jul 18, 2012  Convert DMG to CDR or ISO with Disk Utility. It’s important to point out the file extension method typically works fine on a Mac but if you want to use the resulting image to burn a bootable disk, or burn it through Windows or Linux, you’ll probably want to. Sep 09, 2009  Convert an ISO file to DMG format. Hdiutil convert /path/imagefile.iso -format UDRW -o /path/convertedimage.dmg. This tip is particularly useful if you have a CD/DVD burner on a Mac (or PC) and not a PC (or Mac) and you need to burn a disk image using the other machine. Convert a disk image to another format using Disk Utility on Mac. You can convert the image format and encryption of a disk image. For example, if you create a read/write disk image but later want to prevent changes to the image, you can convert it to one of the read-only disk image formats. Osx convert img to dmg.

   • Open Terminal: In Spotlight, the search magnifying glass at the upper right corner of your screen, search for Terminal, and press enter to open the Terminal app.

   • Type/paste sudo nvram boot-args=' and press enter.

   • Restart your Mac.

If you want to convert a Mac disk image file DMG to ISO format than its not much a difficult task. This conversion could be done through Mac Terminal easily.

Open Dmg File Mac Terminal 3

The reason behind this conversion is that DMG is a file format which works on Mac only but if you want to transfer any DMG file to Windows system then first you have to convert it to Windows compatible file format ISO, otherwise the DMG file is useless for Windows.

So, follow the instructions written below to convert DMG file to ISO format.

Step 1

Open Dmg File Mac Terminal 7

Click on Finder

Step 2

Click on Applications, and then click Utilities

Step 3

Double click on Terminal to launch

Step 4

In Terminal window type the following command and hit Enter button from keyboard. Here trickyways.dmg is our provided file name

hdiutil convert ~/Desktop/’trickyways.dmg’ -format UDTO -o ~/Desktop/’trickyways.iso’

Download Mac Os Dmg File

Step 5

When Terminal completes process, you’ll find a file with .iso.cdr extension, as here is trickyways.iso.cdr besides the trickyways.dmg

Step 6

Click on trickyways.iso.cdr file & press enter to rename it. Delete .cdr extension

When you’ll try to delete .cdr the following Window will pop up, click on Use .iso option

Step 7

Now the extension of file is trickyways.iso