Mac の　OS がアップデート。macOS Tahoe　だ。
インストールできるのは；
MacBook Pro
MacBook Pro (16-inch, 2024)
MacBook Pro (14-inch, 2024)
MacBook Pro (16-inch, 2023)
MacBook Pro (14-inch, 2023)
MacBook Pro (13-inch, M2, 2022)
MacBook Pro (16-inch, 2021)
MacBook Pro (14-inch, 2021)
MacBook Pro (13-inch, M1, 2020)
MacBook Pro (13-inch, 2020, Four Thunderbolt 3 ports)
MacBook Pro (16-inch, 2019)
MacBook Air
MacBook Air (15-inch, M4, 2025)
MacBook Air (13-inch, M4, 2025)
MacBook Air (15-inch, M3, 2024)
MacBook Air (13-inch, M3, 2024)
MacBook Air (15-inch, M2, 2023)
MacBook Air (M2, 2022)
MacBook Air (M1, 2020)
iMac
iMac (24-inch, 2024, Four ports)
iMac (24-inch, 2024, Two ports)
iMac (24-inch, 2023, Four ports)
iMac (24-inch, 2023, Two ports)
iMac (24-inch, M1, 2021)
iMac (Retina 5K, 27-inch, 2020)
Mac mini
Mac mini (2024)
Mac mini (2023)
Mac mini (M1, 2020)
Mac Studio
Mac Studio (2025)
Mac Studio (2023)
Mac Studio (2022)
Mac Pro
Mac Pro (2023)
Mac Pro (2019)

当方の2019年のMacBook Pro 13インチ にはぎりぎりインストールできない。もう一台のMacBook Pro 13インチ　M1　2020　はぎりぎりOK。
というわけで、パソコンの寿命は５年なんだ。

Mac Book Pro の最新のやつは248,800円（税込）から、だ。