High Sierra (macOS 10.13) required 14.3GB in free space to upgrade from previous versions.So we see the following progression of free space requirements: This is all great for the end users as problems with upgrades from previous versions seem to all but have disappeared. The next few years saw new file systems, new apps, new ways of handling various objects on the file system, backing up snapshots to allow for easier recoverability, etc. The free space required to upgrade to El Capitan (Mac OS X 10.11) was 8.8 gigabytes as well, with 10GB being recommended. This was 2016 and the amount of free space required to do an upgrade would increase dramatically. Sierra (Mac OS X 10.12) had a minimum drive capacity of 8.8 GB but really needed more like 12 GB however there wasn’t a hard number sanity check that I personally ran into. The amount of required free space had been growing steadily in the HFS+-era of file systems, but as more elements of iOS (like a modern file system) came to the Mac, and as the Mac transitioned to a fully 64-bit operating system, that number escalated and never returned now that the transition away from things like 32-bit apps and kexts is finished. Obviously, don't click on any suspicious links in the reviews, and have a nice day/night.The amount of free space required to upgrade a Mac has increased drastically in the run-up to and since the introduction of apfs-based snapshots in 2016. I notice a handful of people that come here spamming viruses and porn ads, and I feel like I'm partially responsible for reviews like that. It is version 12.6.06, and 12.6.03 was used to circumvent an error preventing me from creating the file. I changed it to 12.6.03 so when you boot up this ISO, and quicklook at the app inside you may see that it says 12.6.03.
I had to modify ist () to change the app version in order for it to work. dmg file also installs the application to your Applications folder.į2 - The app used to make the ISO was downloaded prior to Sierra being invalidated from the App Store, and also prior to being added to the support article in PKG form.į3 - When using the app to build the ISO, it failed. (Keep in mind that opening and running the. app/Contents/SharedSupport (This generates the app, and I will explain how the app is used) Move InstallESD.dmg to Payload/Install macOS. pkg file was unziped using pkgutil -expand-fullĢ.
hdiutil convert /tmp/.dmg -format UDTO -o ~/Desktop/.cdrį1 - These ISOs were made using DMGs from this article.
app/Contents/Resources/createinstallmedia -volume /Volumes/ -nointeraction hdiutil attach /tmp/.dmg -noverify -mountpoint /Volumes/.hdiutil create -o /tmp/ -size m -volname -layout SPUD -fs HFS+J.Download the installer: softwareupdate -fetch-full-installer -full-installer-version.
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