Downloading and installing a new OS gives you the opportunity to do some major house cleaning if you so desire. If you feel like you'd like a fresh start with macOS Catalina, you can always opt to do a clean install: Just follow the steps below, even if you've already installed macOS California.
Make sure you understand the difference between a clean install and a standard install before you get started.
- Regardless if you are new to the Mac or an advanced user, Dr. Cleaner will be a good choice for you. Cleaner can help you free up a lot of space, please don’t forget to back up your important files, in case an unfortunate event happens like your hard disk malfunctions. We regard customers’ data security as the most important thing.
- Drive Genius was originally developed to keep your Mac hard drive clean and safe from disk errors. The newest edition, 5, has added a comprehensive feature called Malware Scan, part of the automated DrivePulse utility which monitors your Mac for potential issues and viruses.
Note: If you are reading this article on the Mac you want to perform the clean install with, switch to another device or print this page before continuing so you can read along as you go.
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Step 1: Back up your Mac
This process will erase whichever OS you're currently using from your hard drive entirely. That means any files, programs, or documents you have will be deleted. To save your files, put them on an external hard drive or a cloud-based program like Dropbox, OneDrive, or iCloud. If you don't save these important files off your computer, you will lose them.
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Step 2: Create a bootable drive of macOS Catalina
Before you erase your current operating system, download macOS Catalina from the Mac App Store. You'll need a copy of macOS Catalina to perform a clean install later on. If you don't create a bootable drive for macOS Catalina, you may have to install an older Mac operating system first and then upgrade to macOS Catalina afterward.
Step 3: Erase your hard drive
- Connect your Mac to the internet via Wi-Fi or Ethernet
- Click on the Apple icon.
- Select Restart from the drop-down menu.
- Hold down Command-R when you hear the startup chime (or the screen turns black on newer Macs) and keep holding the keys until your computer reboots.
- Click on Disk Utility in the OS X Utilities selector.
- Click Continue.
- Select your Startup Disk.
- Click on the Erase tab at the top of the window.
- Enter a name for the file to be destroyed (Like macOS Mojave or something).
- If your Mac is using HFS+, select Mac OS Extended (Journaled) from the format list. If your Mac is using APFS, select APFS from the format list.
- If Scheme is available, select GUID Partition Map.
- Click Erase.
Step 4: Reinstall a new copy of macOS Catalina
- Click on Reinstall a new copy of macOS.
- Click Continue.
- Click Continue again when the installer window appears.
- Agree to the software terms and conditions.
- Select your hard drive.
- Click Install.
- Complete the installation process.
Questions?
Any questions about performing a clean install? Let us know below in the comments.
Updated September 2019: Updated for macOS Catalina's public release.
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Cd Drive Cleaner Mac
It is always sad to discover that the hard drive on your Mac is running out of free space. All of a sudden the machine’s hard drive signals about space shortage. But certainly, you need not consider buying a new one since you can easily solve the problem by sweeping off the junk stuff from the hard drive. And there is more than one method to do so. We offer you a guidance how to clear the hard drive space using either the manual technique or a specialized commercial cleaner app.
Cleaning the junk manually
The least costly way is, as usual, the manual way. It is preferable if you have time and a strong will to immerse into the depth of your hard drive to search for items to delete. But if the junk on your computer is of varied nature and requires a thorough removal procedure, then maybe using a commercial cleaner app would be better. But let us first consider all important points on the manual removal. Convert files to pdf.
Unneeded files and folders
It will probably make the work easier if you begin with classifying the stuff that may be found unnecessary and so should be removed.
Such a classification gives the following categories:
- Games that you no longer play (demos and shareware)
- QuickTime videos like movie trailers that have long since became outdated
- Temporary files of any kind
- Log files that are no longer actual
- Old ZIP and StuffIt archives
- Music and videos that no longer appeal to you
All the above files are not so difficult to delete off your drive. Alternatively, you can move some of them to an external storage device like the external hard drive.
But removing installed apps often requires a different approach. Sometimes, it is sufficient just to delete the application folder and that’s all. There are no leftovers anywhere on your hard drive and the free space has increased. But quite often applications (like for example Microsoft Office and Photoshop) install their files (associated files) in different folders so you have to search for them. For that purpose, you may use Search text box in the Finder window. To avoid the procedure, in such cases, useful info can be found in readme files or other documentation. Check them and probably you will find out how to uninstall the whole application safely and quickly.
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Another assistant for deleting apps bought from App Store is a Launchpad. From its display, you can click and hold down the icon until it wiggles, then clicks the X to delete the application.
Certainly, if you still need files in the old application’s folder, don’t forget to move them elsewhere before you delete the folder.
Also, don’t forget that deleted files are actually removed from the hard drive only when the Trash is emptied (and certainly the hard drive space will not be reclaimed until that moment). In this context, it is a good advice not to hurry up with deleting your files permanently by emptying the Trash. It is wiser to wait sometime. And if you realize that you deleted a file that you need, you can just restore it from the Trash. https://ekiyidx.weebly.com/blog/mac-os-sierra-download-dmg.
How to clean Mac book using a commercial app
In order to avoid some of the above-mentioned time-consuming and not always safe procedures, you can choose to clean hard drive space on your Mac with a specially designed cleaned program.
For example, you can use a MacFly Pro. How to clean Mac book with this app?
The MacFly Pro has three modules: Smart Assistant, CleanUp and Tools. Each of them plays a role in the procedure of clearing the hard drive on a Mac computer. All the three modules can perform background scanning but, otherwise, each module focuses on its own preferable jobs.
Smart Assistant’s features include monitoring the system’s general state. When necessary, it produces notifications on possible improvements so that the user can either instantly apply or postpone (and schedule) them. The improvements may include removals of cookies and other files that Smart Assistant considers as junk.
The Cleanup module has a customizable scan that may be set to different sorts of possible junk like temporary files or caches. The module has an intuitive navigation and easy interface, which simplifies the procedure of removal.
Module Tools is responsible for especially deep scanning to find, apart from obvious junk stuff, also dubious files that seem to be unnecessary. Removal of such files is a subject to the user’s decision. Besides, this module perfectly uninstalls unnecessary applications leaving no leftover files on the hard drive.
Thus, in order to clear your MacBook from junk, you can use both manual technique and specialized programs.