My iMac installed Ventura 13.0 upon its release. Since then no update of the macOS could be installed.
My iMac (Retina 5K, 27-inch, 2019) installed Ventura 13.0 upon its release. The iMac works fine, no problem whatsoever.
But since then no update of the macOS could be installed. I cannot reinstall. I cannot erase my HD. FirstAid reports no errors on my HD.