Mac Resources
– Mac Serial Lookup – Click Here
– How to Erase and reset your mac to factory settings – Click Here
– How to download and install macOS – Click Here
– See devices linked to your icloud account – Click Here
– Internet Recovery – Option + Command + R (before the OS boots) – Click Here
– iCloud Activation Lock – Enable/Disable/Check – Click Here
– AppleCare & Warranty Check – Click Here
– Apple Certified Refurbished Store – Click Here
– OpenCore Legacy Patcher – Click Here
– Download macOS from Mr. Macintosh – Click Here
– MacBook Power Adapter Identification – Click Here
macOS Versions (Newest to Oldest)
- macOS 27 Golden Gate (expected September 2026)
- macOS 26 Tahoe (2025) – Current Version
- macOS 15 Sequoia (2024)
- macOS 14 Sonoma (2023)
- macOS 13 Ventura (2022) – *Supports latest version of Chrome
- macOS 12 Monterey (2021) – macOS 12 and below is no longer supported
- macOS 11 Big Sur (2020)
- 10.15 Catalina (2019)
- 10.14 Mojave (2018)
- 10.13 High Sierra (2017)
- 10.12 Sierra (2016)
- 10.11 El Capitan (2015)
- 10.10 Yosemite (2014)
- 10.9 Mavericks (2013)
- 10.8 Mountain Lion (2012)
- 10.7 Lion (2011)
- 10.6 Snow Leopard (2009)
- 10.5 Leopard (2007)
- 10.4 Tiger (2005)
- 10.3 Panther (2003)
- 10.2 Jaguar (2002)
- 10.1 Puma (2001)
- 10.0 Cheetah (2001)
How to check if your MacBook has an iCloud Activation Lock
Hold the ‘Option’ key and hover over the apple icon and click on ‘System Information’
Under ‘Activation Lock Status’…it should say ‘Disabled’
(If it says ‘Enabled’, that means the MacBook is tied to someone’s iCloud Account and you should NOT buy it!)
How to check if your MacBook has a Management Lock (MDM lock)
Method #1 – Copy and paste this command into Terminal and hit [Enter]:
profiles status -type enrollment
Both results should come back as ‘No’
Method #2 – Open System Settings >> General >> Device Management >> If it has an MDM Lock…you’ll see a profile already installed.