So you downloaded an .iso image, and now you want to convert it to .dmg format? How can I convert .dmg to a Windows-compatible .iso on Mac? Don’t bother downloading any third party software, you can easily convert .dmg to .iso or .iso to .dmg format using the Terminal or Disk Utility on Mac OS X.
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Method 1: Convert Between .DMG and .ISO Using Terminal
Mac OS X has a command line tool called hdiutil which allows you to create, mount and convert different types of disk image with ease. Here’s how to convert .dmg to .iso format using the Terminal:
- Just press Ctrl + Alt + T on your keyboard to open the Terminal.
- Enter the following command into the Terminal window, assuming that you’ve put the .dmg file on your desktop.
hdiutil makehybrid -iso -joliet -o ~/Desktop/filename.iso ~/Desktop/filename.dmgWhen the process finishes, you’ll get an ISO image that is compatible with Windows, Linux, Ubuntu and Mac.
If you need to convert a disk image from .iso to .dmg, just execute the following command in the Terminal window:hdiutil convert ~/Desktop/filename.iso -format UDRW -o ~/Desktop/filename.dmg
Sit back and wait for the process to complete.
Method 2: Convert Between .DMG and .ISO Using Disk Utility
- Just launch Disk Utility (in /Applications/Utilities). In the menu bar at the top of the screen, select Images -> Convert.
- Browse to the .DMG or ISO file you would like to convert, select it and click on the Choose button.
- In the pop-up window, select Desktop as your destination. In order to convert .dmg to .iso, make sure to choose DVD/CD master as the Image Format. Click on Convert.
If you want to convert .iso to .dmg, set the Image Format to “compressed” instead. Click on Convert and you’ll have a .dmg file ready to use.
- Simply rename the converted .cdr file to .ISO and you’ll get a Mac-compatible .ISO image. However, a renamed file won’t work on Windows or Linux. To make a Windows/Linux/Mac compatible .ISO file, you have to convert the .cdr file to .iso format using this command:
hdiutil makehybrid -iso -joliet -o ~/Desktop/filename.iso ~/Desktop/filename.cdr
Conclusion
DMG is a disk image format commonly used by Mac OS X, but it’s practically unusable on Windows or Linux platform. After converting .dmg to .iso on your MacOS, you can copy it to any Windows or Linux computer for burning or mounting.
Mac OS is one of the most secured operating system provided by Apple. The protection mechanism is akin to all other operating systems, but the registry files accountable for creating the security barriers are a bit different, rather crude to bypass. So if you have forgotten your password on iMac or Macbook, it might be a bit difficult way ahead for you to access the system again if you don’t have the knowledge of the convoluted operating system.
Generally, besides login, Mac password is used for various other reasons, such as, during installing softwares, rendering serious changes in the system settings, or while deleting system files. But here we would confine our excursus on how to bypass the Mac OS password to gain access into the system. The discussion hereby would involve 3 essential methods which would help you inevitably to resolve your issue.
Method #1: Password Hint for Your Mac Login Password
Before you proceed with resetting your password anew, and replace it with a new one, you better try out the password hint which might refresh your memory after a while. In fact there is no limit to the number of times you can enter the password hint, and after 3 attempts Mac OS will provide you the password hint (Password Hint is a phrase or sentence extract which you had entered into the hint box while setting up the password in the first place). Infuse the steps mentioned below to carry out the method accurately:
Step 1. Firstly open “System Preferences” from the “Apple” logo.
Step 2. Select “Users and Groups” category.
Step 3. From the bottom left corner, click on the “Lock screen” icon.
Step 4. Press the “Return” key 3 times in a row. The screen will shake every time you press the “Return” key. After the third shake, the password hint will be displayed below the “Password field” which you can use to try out your luck.
The best part about this method is that there is no limit to the number of password trials, so you can keep trying until you get to recall it fully. But if the method is not helping you anyway, then you better skip to the next methods refined ahead.
For windows user: How to bypass Windows 10/8/7 login password
Method #2: Change Password from Another Account
If you have set up multiple accounts in your device, or share your device with another user which might have created another account in the same system, then you can use this separate account to change the password of your own locked down account.
The steps are laid out as follows:
Step 1. Click on Apple’s logo and then choose log out from the top left corner.
Step 2. Select an account you know the password to and enter the password thereby to gain access to the account.
Step 3. Go to “System Preferences” and click on the “Lock” icon at the bottom left corner of the screen.
Step 4. Enter your password again and then choose the specific account that you have forgotten your password for from the side pane.
Step 5. Now; click “Reset Password” and fill up the fields and the “Password hint” field.
Step 6. Finally click “Change Password”.
And you are done! You can now access the account with the newly created password.
Also read: 2 ways to boot your Mac into safe mode
Method #3: Use Recovery Mode to Recover Mac Password
Besides providing all the essential luster to the fundamentals of the operating system, Apple provides a tool, that is “Recovery Mode” for Mac OS or Mac OS X, depending upon which version you are currently using, you can use it to recover your forgotten Mac login or admin password.
Step 1. Press the power button of your device and while doing so press and hold the “Command-R”. This way Mac will boot into the Recovery Mode. Once the load bar is visible you can let go of your hold of the buttons.
Step 2. It will take a few minutes to load, and after it is loaded, choose the “Disk utility” and press “Continue”.
Step 3. Go to “Utilities” and then select “Terminal”.
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Step 4. Now; in the empty field, enter “resetpassword” just in the exact manner and press “Return”.
Step 5. Choose the Volume which is your main hard drive containing the account.
Step 6. Now; select the account you wish to change the password of by “Select the User Account”.
Step 7. Enter your password and re-enter it for confirmation.
Step 8. Enter a password hint for future use and click “Save” to save the changes.
Step 9. A warning would appear notifying that the password has been changed but not the Keychain password. Click “Ok” to finish.
Step 10. Finally, click on “Apple” logo and then “Shut Down”.
Now, start your Mac OS and enter the previous account with the new password.
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Conclusion:
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As you can see all the mentioned methods above in the article are very easy to put to use if you have the basic expertise of how to handle an Apple device. Out of all the methods, recalling the password using Password Hint is a very tedious and time consuming method, and at some point of time may prove to be futile, thus Recovery Mode is the best option that you can heed to reset your forgotten password. Hope you had a great time knowing the ways to recover your login password on iMac or Macbook.
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