Does reinstalling the Mac operating system erase your data?
Does reinstalling the Mac operating system erase your data?
iMac 27″, macOS 11.6
Does reinstalling the Mac operating system erase your data?
iMac 27″, macOS 11.6
Hello, HFB.
No, reinstalling the macOS does not have to erase you data.
if all goes well, the only time that should happen is when you choose to Erase, Format, or Partition your drive using Disk Utility. That is not required when you simply wish to reinstall the OS.
But always good advice above from Jack-19 about having backup.
Backup your Mac with Time Machine - Apple Support
Hello, HFB.
No, reinstalling the macOS does not have to erase you data.
if all goes well, the only time that should happen is when you choose to Erase, Format, or Partition your drive using Disk Utility. That is not required when you simply wish to reinstall the OS.
But always good advice above from Jack-19 about having backup.
Backup your Mac with Time Machine - Apple Support
Welcome to Apple Support Communities.
It should not, but you need to have a backup first in case something happens!
Jack
Does reinstalling the Mac operating system erase your data?