Go to the Finder and click on a search box in the upper right corner. Then, enter ‘pkg’ or ‘dmg’, depending on what you`re looking for. In the appearing menu, select the following sections: Kinds - Disk Image. Right after it will show you all KPG or DMG files stored on your hard drive. Remove them all together. One way to avoid keeping DMG files after installation Jan 11, '08 07:30:02AM. Contributed by: jefpearlman I often find my downloads directory filling with disk images I've downloaded off the internet, installed, and forgotten to delete after unmounting (and possibly rebooting).
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macOS Sierra has already been made available to users and it can be exciting to get your hands on a new operating system loaded with new features and enhancements. While most users are having a smooth experience with the latest operating system, some have been facing annoying issues.
In this post, we will go through the 10 common problems of macOS Sierra and how to fix them.
10 Most Common macOS Sierra Problems and How to Fix Them
#1. macOS Sierra Upgrade Shows “An Error Has Occurred” Or “Failed to Download”
This is a common issue that many users face while upgrading their Mac to a new operating system. The solution is quite straightforward and easy to tackle.
To fix this issue, you have to delete the existing macOS Sierra installer and re-download it. To do so, open Launchpad and you should see the half-downloaded “Install macOS Sierra” file with a question mark on it. Delete this file, reboot your Mac and retry the download process.
#2. Mac App Store Shows macOS Sierra as “Downloaded”
If you go to the Mac app Store and see that macOS Sierra is shown as “Downloaded”, then it means that you either have installed the beta version or the GM build.
To be able to download the final version of macOS Sierra, you have to remove any existing “Install macOS Sierra” installer files from your Mac or from a connected hard drive. Once you’ve removed the installer files, go back to the Mac App Store and you should be able to install the final version.
#3. “This copy of the Install macOS Sierra.app application is damaged, and can’t be used to install macOS” Error
If you see this error while attempting to download and install macOS Sierra, it means that the file is either corrupted or was interrupted during download.
One way to fix it is to delete the “Install macOS Sierra” file from Launchpad, reboot your Mac and download the macOS Sierra file again.
#4. Wi-Fi Problems
Internet connection and Wi-Fi problems are the most annoying issues anyone could face while using a new operating system. Some users have reported that webpages, including downloads, load very slowly after upgrading to macOS Sierra.
Firstly, you have to ensure that there are no issues with your router and that your ISP is providing a proper internet connection. If these two have no issues then you can try deleting your WiFi preferences and start afresh. To do so, read the steps below:
- On your Mac, open Finder.
- Select Go from the top menu and choose Library (you have to press the Alt key while the menu is open so that you can view the Library option).
- Go to /Preferences/SystemConfiguration/.
- Delete the following files:
- com.apple.airport.preferences.plist
- com.apple.network.identification.plist
- com.apple.wifi.message-tracer.plist
- NetworkInterfaces.plist
- preferences.plist
- Next, reboot your Mac and router.
#5. macOS Sierra Installation Freezes or Crashes
If your Mac freezes while installing macOS Sierra or the installation crashes, then there are a few methods to fix this annoying problem.
- The first thing to do is to disable or uninstall any Antivirus software that is present on your Mac, as they may interfere with the installation.
- Ensure that you have a proper and reliable internet connection.
- Next, you can try installing macOS Sierra in Safe mode. To do so, switch off your Mac by holding the Power button until it shuts down. Next, turn it on and when you hear the startup sound, hold down the Shift key. When the Apple logo appears, release the Shift key and your Mac should now be in Safe mode. Now proceed with installing macOS Sierra.
#6. Not Enough Space to Install
It can be annoying if your macOS Sierra installation is interrupted just because you don’t have enough space to install the new operating system.
You have to make sure that you have at least 8GB of free space available on your Mac. So get rid of all the junk files and delete unnecessary files and apps. Check out our articles on how to free up more storage space on your Mac.
If the error still appears after clearing up some space, then try installing macOS Sierra in Safe mode.
- Next, you can try installing macOS Sierra in Safe mode. To do so, switch off your Mac by holding the Power button until it shuts down. Next, turn it on and when you hear the startup sound, hold down the Shift key. When the Apple logo appears, release the Shift key and your Mac should now be in Safe mode. Now proceed with installing macOS Sierra.
#7. Lag & Other Issues with Logitech Mouse
Unfortunately for users of some Logitech-branded mice, the update to macOS Sierra has broken compatibility, and has caused a series of issues in their accessories. Some of those problems include “laggy” response times, and some customizable buttons flat-out not responding at all.
The issue stems from a lack of compatibility between macOS Sierra and Logitech’s Control Center app. The latest release for the Control Center app, version 3.9.4, specifically mentions that the M705’s forward and back buttons are not working, and scrolling was “problematic” as well.
Therefore, you have to wait until Logitech releases an update to fix the issue.
#8. Mac Won’t Turn on after Installing macOS Sierra
If you’ve installed macOS Sierra, but your Mac isn’t starting, you can try resetting the NVRAM and PRAM. To do so, restart your Mac and then hold down the Cmd + Option + P + R keys together until you hear the startup chime sound twice. After the second chime sound, release the keys and your Mac should hopefullly boot up without any issues.
#9. Installed Apps Show ‘Damaged and Can’t Be Opened’ Error
If you have updated to macOS Sierra and get a ‘Damaged and can’t be opened’ error when trying to launch an app, you should make sure that the app has been updated to the latest version.
If the issue still persists after updating the app to the latest version, remove it from your Mac and install it again.
As a last resort, if nothing else works, you can clear the cache.
- Open Finder.
- Click ‘Go’ from the top menu and choose ‘Go to Folder’.
- Enter ~/Library/Caches into the text box.
- Delete the files from every folder.
- Now, repeat the same process for /Library/Caches (without the ~ symbol)
Reset the PRAM by restarting your Mac and holding down Cmd + Option + P + R keys.
Even after all this, if the problem still persists, then try launching the faulty app while holding Cmd + Option keys.
These are some of the most common issues that users are facing after upgrading their Mac to macOS Sierra. For most, it has been a seamless experience and we hope that this article will clear out all the issues you’re facing with the new operating system.
What problem are you facing with macOS Sierra? Let us know in the comments below.
#10. iCloud Error and Authentication Issues
Some features and functionality of macOS Sierra depend on iCloud and you’ll be asked during the setup process to enable some of these features such as Storage Optimization and iCloud Documents and Desktop. You can skip them if you want but an annoying issue that some users are facing is that iCloud constantly pops up for authentication or displays an error.
For instance, you may get an ‘Error connecting to iCloud’ popup or see something like ‘This Mac can’t connect to iCloud because of a problem with …’. To fix these issues, do the following steps:
- Open the Apple menu and choose System Preferences.
- Select iCloud and click on ‘Sign Out’.
- Next, reboot your Mac and open the iCloud preference pane again.
- Sign in into your iCloud account.
11. Feel your Mac has become Slower?
If you feel that your Mac has become slower after upgrading to macOS, then check out our articles to speed up your Mac.
Have you hit any of these issues while upgrading to macOS Sierra? Please share your experience in the comments below.
Normally when you install a new version of macOS, you just install it over the previous version. It’s quick, easy and means we can be back up and running in no time, with all your apps and data ready to use. Your data remains but your software and file junk remains as well.
That’s why, sometimes, it makes more sense to run a clean install. Whether it’s because your Mac has accumulated so many junk files that it’s performance is badly affected or because you’re passing your Mac onto someone else and want to make sure all your data is removed. Or maybe you just want that fresh out of the box Mac experience again. Whatever your reasons, here is how to clean install macOS High Sierra.
How to prepare your Mac for the clean install
Before you do anything, check that your Mac is able to run Apple's new operating system.
To complete the clean install procedure described below, you'll need:
- macOS High Sierra Installer,available from the Mac App Store.
- a 16GB or larger USB flash drive
Notice: USB drive is needed for a clean install on your Mac’s startup drive. If you plan to clean install macOS on a non-startup drive, you don't need it. - go for a system cleanup and backup your data - this will allow you to easily return your Mac to the condition it was in before you installed macOS.
- and an hour or two to spare.
Choose the right way to clean install macOS High Sierra
Before you proceed, you need to make a choice how to run a clean install. If you only have one drive and it’s not partitioned and this is where you have all your files and your OS, your choice is to clean install on the startup drive. This way entails one important fact: all your files and data will be deleted during the process.
If you have another drive or volume other than your startup drive, use the second way which is clean installing on a non-startup drive. It’s a more lenient and less intrusive way because your Mac doesn’t get wiped clean, only your system.
If you don’t know which one you have, go with the first option, startup drive.
How to clean install macOS on a startup drive
Once you have everything that's needed, let's begin. Don’t worry, this step-by-step guide will walk you through all you need to do.
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The process of performing a clean install involves wiping your Mac’s main drive clean so it’s essential that you back it up immediately before you start. You might not want to backup the files you don’t need and system junk, so make sure to clean that up beforehand. An easy way to go about this is to get a Mac cleaning app like CleanMyMac. It will save to hours of manual file cleanup and polish your system before the backup.
Start with a system cleanup
Delete everything you don't need - large and old files and archives, useless apps, cache data and other junk, duplicate files - all these files silently eat up the disk space, duplicate images are especially hard to find out.
You can always use CleanMyMac to cleanup system junk, large and old files, and remove unwanted apps. You could do it manually, but CleanMyMac only all it takes is a few clicks.
Then you can use Gemini to easily find duplicate files and folders on your hard drive, so you can delete them and save precious storage space.
Backup your data
Now, for the backup itself use Get Backup Pro. It’s more powerful than Apple’s own Time Machine. It’s also a good idea to create a bootable clone, so if anything goes wrong you can go back to where you started easily. Also, a cloned drive makes copying files back to your newly-updated system very easy. And move your images and documents into the cloud or to an external drive, just to be on the safe side.
Delete Dmg After Installation Software
As well as backing up your Mac, you should also take screenshots of settings in any apps you’ve customized so that you can set them up again quickly later. And make sure you have a record of license codes for apps and passwords for websites.
Clean install macOS, securely
Your Mac deserves a fresh start. Get the right tools for clean installing Apple's operating system.
Create a bootable macOS installer
- Download macOS High Sierra from the App Store. Here is a link.
- When it’s finished, the installer will launch. As soon as it does, select File and Quit (or keyboard shortcut Command-Q) so it doesn’t install. The installer will remain in your Applications folder.
- Plug in the USB stick and launch Disk Utilities.
It’s a good idea to use a USB stick to put the bootable installer onto. It will need to be at least 8GB in size. - Click the Erase tab and make sure Mac OS Extended (Journaled) is selected in the format tab.
- Give the USB stick a name then click Erase.
- When it’s finished, click Done and close Disk Utility.
- Launch Terminal either by searching for it in Spotlight or navigating to the Utilities folder in Applications.
- Type, or paste, the following command into Terminal, where [YOUR DRIVE NAME] is the name you gave the installer drive when you formatted it:
sudo /Applications/Install macOS High Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/[YOUR DRIVE NAME] --applicationpath /Applications/Install macOS High Sierra.app
Notice: Remember to replace [YOUR DRIVE NAME] with the name of your installer disk. - Hit Return.
- Type in your admin password and wait.
- When the process is finished, the word Done will appear in the Terminal window.
- You can then quit Terminal.
Install macOS on your startup disk drive
Make sure you backup your Mac to keep your important files, before taking next step, that erase your Mac’s Startup drive.
To erase your Mac’s main drive:
- Go to System Preferences
- Сlick Startup disk and choose the installer you just created.
- Restart your Mac and hold down Command-R to boot into recovery mode.
- Take your bootable USB and connect it to your Mac.
When the macOS Utilities screen appears, follow these steps:
- Select Reinstall a new copy of macOS.
- Click Continue, then click Continue again when the next window appears.
- Agree to the terms and conditions, then select your Mac’s internal drive.
- Click Install.
- Wait for macOS High Sierra to install and your Mac to restart.
When your Mac has restarted, you’ll need to follow the process of setting it up as if it was a brand new Mac. So, you’ll need to connect to your wifi router and type in the password. Then you’ll need to type in the details for your iCloud account. Then you’ll have to set up a new admin user account.
Once you’ve done that, you can start installing apps. In order to re-install Setapp apps, go to setapp.com to get Setapp installer or download Setapp here. You’ll need your username and password.
![Dmg Dmg](https://www.laptopmag.com/images/wp/purch-api/incontent/2013/10/SeeFiles-670x388.jpg)
It’s a good idea to only download those apps you need to use straight away. Other apps can be downloaded as and when you need them. That way you avoid cluttering up your brand new macOS.
If you use a cloud service like Dropbox, now is the time to re-connect. And you can copy any documents, photos or other files you need from the backup you made at the start.
Clean Install macOS High Sierra on a non-startup drive
You don’t need a backup for this option, it’s safer and faster than the previous way but only available to you if you have an extra drive or your drive is broken down into volumes.
Here’s how to instal your new macOS on the non-startup disk.
Step 1. Erase your non-startup drive
Before you install the new OS on it, you need to erase all data on the drive you’ve chosen for it. To do it, use Disk Utility. Choose the volume you’d like to clean up and click Erase.
Can I Delete Dmg After Installation
If you still need some info from that drive, you can use an app like ChronoSync Express to sync it with another drive and keep the files.
Step 2. Download the macOS High Sierra Installer from the Mac App Store
Delete Installation Files
To download it, open the Mac App Store and go to the Updates tab ( Here is a link.) When your installer is downloaded it will launch automatically but you need to quit it.
Fortunately, for this option you don’t need to create a specific bootable drive and you can simply use the installer from your startup drive and install the macOS onto the other one.
Step 3. Install macOS High Sierra to your non-startup drive
Launch the Installer from the Applications folder and press Continue. Change the target drive for installation. macOS will offer you startup drive by default so you need to click Show All Disks button and choose your non-startup disk volume. From then on simply follow the installation guide and after that you’ll have to set up your Mac as a new one. That entails creating a new user account, setting up date and time zone etc.
Now that you have the latest macOS, you can enjoy its superior features and top performance. Clean install (when performed on a startup drive) does remove your apps so if you don’t feel like looking for every app and their licenses again, get Setapp. More than 100 apps in one suite available by subscription. Saves you time and money on looking for apps for your daily tasks.