MacOS Catalina promises new features and big security improvements, but you may.Erasing and reinstalling a clean macOS is now a common workflow for reprovisioning Macs for different users, purposes or simply starting over. Unfortunately, their permissions seem to be limited to third party applications , which makes them useless for removing pre-installed apps under macOS Sierra and High Sierra.latest VPN Tracker 365 after trying to connect on an iMac - MacOS High Sierra. Uninstall GarageBand with Mac Optimization Software Uninstallers such as AppCleaner and AppZapper are usually among the favorite app removal utilities.Find macOS High Sierra and click Install. Ensure the Avast Security window is active, then click Avast on the left side of the menu bar, and select. Click Go in the menu bar, select Applications, then double-click the Avast icon. Open the Avast Security user interface using one of the following methods: Click the Avast Security icon in the menu bar, then select Open Avast Security.
![]() Best Uner High Sierra Mac Optimization SoftwareBe sure each Mac has a unique password that won’t unlock any other computer.Administrators need to balance limiting access to the Big Sur installer with needing to install it themselves. Since this is at the hardware level, no one without the password can install or upgrade.The caveat with setting a firmware password is that someone in Desktop Support helping a remote user may have to provide this password to the end user. The most basic step we can take is to remove admin privileges for end users and require they use Self Service for running policies you allow.Removing admin privileges, though, makes your end users heavily rely on IT administration.Setting a firmware password prevents anyone without the password from booting to the Recovery HD, erasing the existing operating system and installing a new macOS. It will prevent any macOS installer from running when double-clicked including Catalina, Mojave, High Sierra, etc.Anyone with admin privileges on a Mac can do practically anything, including installing an operating system. Restrict using the InstallAssistant process name and kill the process.This is similar to the second method, but it includes the Kill Process option and could include the Delete Application option. Adding the Delete Application option will delete it immediately, bypassing the Trash.When restricting by application name, be aware the end user can simply rename the installer and bypass the restriction.4. That means we don’t need to upload an unwieldy package to our distribution points or manage new versions as they’re released.While this works well, it does have one caveat. Maybe, this will reliably work in the future.The Install macOS Big Sur application is available in Apps and Books when viewing either Apple Business Manager or Apple School Manager and is deployable like other Mac App Store apps. Deploying the installerBefore we can deploy the macOS installer, we need to acquire it.In the past, we’ve discussed Apple’s -fetch-full-installer option in the softwareupdate command.Still, it seems completely broken on the latest versions of macOS Catalina and Big Sur. Before we can deploy it to our fleet, though, we need to package it.Jamf’s Composer application can do this, but because of the size of the Big Sur installer (it’s just over 12 GB), Composer can only create a DMG file it cannot create a PKG file. This downloads the latest version and places it into the Applications folder. When using it with home users or those who’ll be invoking the installer themselves using something like Self Service, be sure to alert them not to put their Macs to sleep, to leave them plugged in to power and to allow time for the installation to complete.Another way to acquire the installer is through the App Store on a Mac. Depending on the speed on the current internet connection, that may mean a delay of 10, 20, or 30 minutes or longer.This type of deployment is best suited for school lab Macs and works well with content caching servers to speed delivery. When double-clicked or run using the startosinstall command line tool (discussed a little later), the Mac must be connected to the internet and it will download the rest of the files it needs to complete. It’s not a full installer but rather the same app without the 12 GB SharedSupport.dmg in the app bundle. 35.5GB of available storage for macOS Sierra 10.12 or later (I like to multiply that by about 1.5x to 2x for breathing room)MacOS Big Sur Compatible (Macs Smart Computer Group)Let’s create a new Smart Computer Group to identify eligible Macs and name it “macOS Big Sur Compatible Macs” and add the following criteria: Operating System Version greater than or equal 10.9And Boot Drive Available MB more than 53760After saving, be sure to click the View button to verify the group is working as expected.Install macOS Big Sur App Cached (Macs Smart Computer Group)While we’re at it, create a second Smart Computer Group named “Install macOS Big Sur App Cached” and add the following criteria: Application Title is Install macOS Big Sur.appThis will help us identify Macs that have the Big Sur installer app already downloaded to prevent Jamf Pro from downloading it again. Identifying Macs eligible to erase and installBefore running the installer to erase and install our Macs or even upgrade them, we need to first identify which ones meet Apple’s system requirements. So, let’s next examine macOS Big Sur’s installation requirements. Upload the package to your Jamf Pro distribution point and when deploying, it’ll place the Install macOS Big Sur application into the Applications folder.When we’re ready to deploy the installer using any of these methods, we need to make sure it’ll do so successfully. When the download is finished, the script places an InstallAssistant.pkg file in the same location as itself. You’ll find it on Armin’s GitHub respository.To use the tool, save the fetch-installer-pkg.py script to your desktop or other location and run it using Terminal (this does not require admin or sudo privileges).The Terminal window displays both the download speed and time remaining. Google hangouts dekstop for macIt also has the advantage of working even if we’ve used Software Restrictions to block the InstallAssistant process and we can invoke it as part of a script or a Jamf Pro policy (optionally, using Self Service).To find the command line tool, right-click or Control-click the Install macOS Big Sur application and choose Show Package Contents > Contents > Resources. It does the same thing as double-clicking the installer application without showing any of the dialogs and windows. Remotely running the macOS installerThe startosinstall command line tool is found inside the Install macOS Big Sur app bundle.
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