One example is when you depend on old hardware such as an external RAID drive which is only supported by an old kernel extension. Sometimes, the migration itself can cause unexpected problems. Whether you migrate user accounts and apps from a copy or backup, or laboriously reinstall everything you need on your new system, there’s a chance that something important will get left out and cause problems.
#Mojave clean install install
If you see this as a good opportunity to clean those up, and are prepared to spend the time doing so, you may find a clean install worth the extra effort. Those include your bulging Library folder which is bound to contain the remains of all sorts of apps long since removed. Where there can be benefits are in those system files, including Safari, which are stored not on the SSV, but on your writeable Data volume, and in the others there. So as far as the System volume is concerned, there’s nothing to be gained in a clean over a regular install. Every time that system is booted, its integrity is verified against Apple’s master Seal. That is first installed on the separate System volume, every file checked for integrity, the whole volume ‘sealed’ with a cryptographic hash, and then saved as an immutable snapshot. This article asks what benefits there are to doing this with Monterey or Big Sur, and how you can do it.īig Sur and Monterey are different from all previous versions of macOS in that the great bulk of macOS is loaded and run from a Sealed System Volume (SSV). In the days when system and user files were all intermingled in the same volume, there were good arguments that the result was worth the extra effort, both in cleaning out the crud accumulated over the years, and in ensuring that we started with a perfect, mint copy of macOS. The advice was to delete that file, as it is a tweak not an essential anyway and then retry the installation.In the past, many of us took the opportunity when upgrading to a major new version of macOS to perform a clean install onto a freshly-formatted disk. And one person had tracked it to an obscure system configuration file that evidently Mojave doesn’t erase or overwrite during installation. Lo and behold, I found hundreds of people reporting exactly the symptoms I was getting.
Then I went online and searched for reports of similar issues. His only suggestion was to erase the disk and do a clean install, which I rejected because I really can’t go without the computer for the two or three days it would probably take me to re-install all my apps and data, including licenses. The “Genius” there had no clue of what was wrong. The installation itself went faster, but with the same end result. They had a local copy of the installer and agreed to try it for me.
#Mojave clean install pro
Fortunately, I keep good backups, including an externally bootable carbon copy, and I was able to restore High Sierra without difficulty.Ī bit later, I took the Mac to the Apple store for a battery replacement (it is a 6-year old MacBook Pro with a lot of charge cycles on it).
#Mojave clean install password
Simply typing my password to log in required 15-20 seconds before each character responded! Opening Finder took several minutes! The system proclaimed it couldn’t connect to my WiFi because there was no adapter hardware detected. When I fired up the computer at the end of the install, everything was glacially slow. When I first attempted to install Mojave, the process took a very long time - like 4-5 hours, not the 35-40 minutes Apple says is normal. A disk wipe and clean install may be the only way to get it working on some computers. For impatient readers, I’ll cut to the chase: I think Mojave is more sensitive than past macOS installations to detritus left behind by previous macOS versions. However, I can’t say that installation of Mojave itself was without issues. John is right that I’m not having problems with SketchUp under Mojave 10.14.2.
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