Some months ago I uploaded OS High Sierra. Do I still need to keep the OS X Mavericks installation?
Some months ago I uploaded OS High Sierra. Do I still need to keep the OS X Mavericks installation?
MacBook Pro 15″, macOS 10.12
What do you mean.
Have you downloaded the High Sierra installer called Install macOS High Sierra.app, and not installed
High Sierra, so therefore your mac is still running Mavericks.
If you decide to install High Sierra it will install over your Mavericks installation.