A: Yes, it is possible to perform an in‑place upgrade, but it is more prone to errors. Most guides recommend a clean install to avoid conflicts between old and new system files. If you choose to upgrade, back up your data first and be prepared to reapply the OCLP post‑install patches.
Before applying patches for virtual machines, you must convert the downloaded .app installer into a standard .iso disk image using the macOS Terminal. 1. Create a Blank Disk Image download macos sequoia iso patched