If you’ve ever wanted to protect important files and documents on your Mac but weren’t sure how, this article will help you do just that. First, we will explain how to password protect folders using a default Mac utility. Secondly, we will share an alternative method to protect your files and folders by hiding them. Part 2: Open Password-protected ZIP File on Android Phone (Knowing Password) Zipped files are often encountered when you download files from emails. Basically, download any files from your email and it should be compressed or password protected, let’s just say you have downloaded a zipped file from the email called 'test file'. Feb 02, 2014 So, on my external USB hard disk I had created two password-protected '.dmg' disc images. Both functioned normally for about 2 months. Then, suddenly, one of the two images now opens without asking for its password (the other file remains protected).
The truth is that your Mac is only as secure as the people you leave it with and the password that you use.
That’s why you should only leave your computer with people you trust, and should be certain you use a tough passcode, even if it does take you a little longer to open it up. Another thing you can do to protect yourself is to password protect items on your Mac.
What we’ll learn
1 day ago Any time you want to access the contents of the original folder you can open the password protected DMG file. You can even add files to this DMG file just like you would on a folder. Once you are done using the folder you can eject the DMG file from the Finder. There you go folks, this is how to password protect a folder on Mac. Publisher's Description. It will help you to open and preview the emails of Mac Disk image files i.e. It also helps to preview encrypted or any password protected DMG files keeping the original data intact. An advanced search option is also introduced to filter e-mails being searched. It can also restore the permanently deleted EML.
I’m going to very quickly explain how to password protect things on your Mac. Specifically, we’ll look at password protection in iWork, Notes, PDF and Microsoft files, and also use of Disk Utility. There are additional ways, which I might add to this report at a later date.
Password protect iWork files
Pages, Keynote and Numbers files can easily be protected.
Open the file you want to protect and choose File>Set Password. You’ll see a box like this appear. Enter and verify the password in boxes one and two and enter a password hint to help if you forget the code. You can also choose whether to open the item with Touch ID, or remember it in Keychain if you don’t have a Touch ID Mac. Tap Set Passwordwhen you are done.
Next time you open the document you’ll be asked for the password.
Password protect Notes files
Open the Note you want to protect and:
Lol dmg hack. You’ll be asked to set a password, hit OK when you are done.
Password protect PDF using Preview
You can also use Preview to lock PDF files (these don’t need to have been created in Preview). It’s a little more complex:
Next time you want to open this item a password will be required.
You can disable this protection in a locked item by unlocking it, returning to the Save As dialog and unchecking the Encrypt box.
Open Dmg File On Windows
Tip: You can also password protect any item in the Print dialog box: Tap print, tap Save as PDF using the drop down item at lower left of the print dialog box and then click Security Options, check require password, enter and confirm that password and the document you create will be protected.
Password protect Microsoft files
You can password protect Microsoft files in the Review tab using the Protect item at the top right of the toolbar. Open the Set a password to open this document item to set one.
On Excel documents you must choose File>Passwords to access the Encrypt this item dialog.
You can’t open DMG files directly in Windows, though. For that, you’ll need a third-party tool. Open DMG Files in Windows By Using 7-Zip or DMG Extractor. There are a lot of different tools you can use to extract DMG files in Windows. Our two favorites are 7-Zip and DMG Extractor. In our testing, we found a few DMG files that would open with one of those apps but not the other.
![]() Password protect with Disk Utility
You can create an encrypted disk imager in Disk Utility. You can use this to create secure archives of files, folders, or even entire disks.
In future, when you want to open the folder you’ll click the disk image, enter the password and Disk Utility will mount it as a device on your Mac — you’ll see it appear in the Finder sidebar. To explore the contents just tap the disk image.
Stay safe out there!
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None of the versions of Windows operating system supports DMG format out of the box. As you likely know, DMG file is an OS X disk image file and are supported in Mac OS X operating system. One needs to take the help of third-party tools in order to open a DMG file on a PC running Windows operating system.
Those of you have spent considerable amount of time on Mac would know that the DMG is mostly used to install apps on Mac. In other words, apps that we download to install on a Mac OS X use .DMG extension and can be mounted easily by double-clicking on the file on Mac.
While there are a couple of handy options out there to open or extract a DMG file in Windows, we will share the best three tools to deal with DMG files in Windows environment.
![]() DMG Extractor
DMG Extractor is probably the first and only tool designed exclusively to deal with DMG files on Windows OS. Since DMG Extractor is developed specially for DMG files, it can open encrypted .DMG files without having to first convert them to other formats.
Raw, Bzip2, Zlib, and Zero block type DMG files are supported by DMG Extractor.
The only catch with the free version of DMG Extractor is that it can’t open DMG file of size more than 4GB but that shouldn’t be problem for most users.
Using DMG Extractor is fairly simple. After installing the software, right-click on the DMG file that you want to open and then click Open option to open the file with DMG Extractor. Alternatively, after launching DMG Extractor, click Open button and then select the DMG file to contents of the selected DMG file.
To extract a DMG file, click the Extract button and then select a location to save the contents.
HFSExplorer
Another free utility that you can install on your Windows machine to extract DMG files is HFS+ Explorer. With HFSExplorer you can open Mac-formatted disks and disk images in Windows.
While HFSExplorer is relatively easy-to-use, we must mention that it’s not as straight-forward as DMG Extractor. You need to install Java SE Runtime Environment 5.0 or above in order to run HFSExplorer and it doesn’t support all type of DMG format, including DMG UDF format.
However, on the plus side, there is no size restriction per file.
Here is how to use HFSExplorer to open DMG files
Step 1: Download and install Java SE Runtime Environment 5.0 or greater version.
Step 2: Visit this page to download HFSExplorer and run the installer to get it installed.
Step 3: Run HFSExplorer, click File menu, and click Load file system from path option to browse to the DMF file.
If you have come across a better solution to open DMG files in Windows, dos share with us in comments.
7-Zip Free
Most PC users are familiar with 7-Zip utility. If you haven’t used 7-Zip before this, it’s a free tool used to compress and uncompressed files. In addition to 7z, Zip, and RAR formats, 7-Zip also supports DMG format. However, it’s important to note that 7-Zip supports only unpacking of DMG files.
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