如何升級EC2 上的MacOS？ How to upgrade MacOS on AWS EC2
參考官方文件就可以了 – https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/mac-instance-updates.html
過於陳舊的MacOS 需要升級ENA driver，但通常不會有這種情況，因為使用MacOS 主要是用於iOS 開發和迅速迭代，沒有人會用五年前的Mac 來寫code，因為你要支持最新的iPhone 就必須要用最新的MacOS。而且，不是所有的版本都支持升級，支持的版本請參考該頁面說明。
使用SSH 連結到 EC2 並為ec2-user 設置一個密碼：
sudo /usr/bin/dscl . -passwd /Users/ec2-user為了Enable the secure token for the ec2-user user，必須修改一次密碼，修改的動作並不是為了修改密碼，而是為了Enable the secure token。
vi old_password.txt
vi new_password.txt
sysadminctl -oldPassword `cat old_password.txt` -newPassword `cat new_password.txt`
2026-01-21 06:53:17.708 sysadminctl[705:6829] Attempting to change password for ec2-user…
2026-01-21 06:53:19.287 sysadminctl[705:6829] SecKeychainCopyLogin returned -25294
2026-01-21 06:53:19.287 sysadminctl[705:6829] Failed to update keychain password (-25294)
2026-01-21 06:53:19.288 sysadminctl[705:6829] - Done確認一下真的啟用了：
sysadminctl -secureTokenStatus ec2-user
2026-01-21 06:58:35.755 sysadminctl[806:8689] Secure token is ENABLED for user ec2-user創建一個json 文件用於Delegate ownership of the Amazon EBS root volume to the EBS root volume administrative user，這是因為在 Apple Silicon Mac （Mac2, Mac2-m2, Mac-m4 等）上，系統更新需要特定的管理權限，當你要進行 macOS 系統更新時，需要先將 EBS根磁碟區的所有權從內部磁碟管理員（aws-managed-user）委派給 EBS 根磁碟區管理使用者（通常是 ec2-user）。
vi mac-credentials.json
{
"internalDiskPassword":"",
"rootVolumeUsername":"ec2-user",
"rootVolumepassword":"newPasswordHere"
}
aws ec2 create-delegate-mac-volume-ownership-task \
--instance-id i-079180f283a7b0baf \
--mac-credentials file://mac-credentials.json
{
"MacModificationTask": {
"InstanceId": "i-079180f283a7b0baf",
"MacModificationTaskId": "macmodification-05b40255b8b15176c",
"MacSystemIntegrityProtectionConfig": {},
"StartTime": "2026-01-21T08:09:43.417000+00:00",
"TaskState": "pending",
"TaskType": "volume-ownership-delegation"
}
}
aws ec2 describe-mac-modification-tasks \
--mac-modification-task-id macmodification-05b40255b8b15176c
{
"MacModificationTasks": [
{
"InstanceId": "i-079180f283a7b0baf",
"MacModificationTaskId": "macmodification-05b40255b8b15176c",
"MacSystemIntegrityProtectionConfig": {},
"StartTime": "2026-01-21T08:09:43.417000+00:00",
"Tags": [],
"TaskState": "in-progress",
"TaskType": "volume-ownership-delegation"
}
]
}上面一般需要30～90 分鐘，我是用了四十幾分鐘，
login after rebooted:
┌───┬──┐ __| __|_ )
│ ╷╭╯╷ │ _| ( /
│ └╮ │ ___|\___|___|
│ ╰─┼╯ │ Amazon EC2
└───┴──┘ macOS Sequoia 15.7.3
softwareupdate --list
Software Update Tool
Finding available software
Software Update found the following new or updated software:
* Label: macOS Tahoe 26.2-25C56
Title: macOS Tahoe 26.2, Version: 26.2, Size: 8111826KiB, Recommended: YES, Action: restart,
sudo softwareupdate --install --all --restart
Software Update Tool
Finding available software
Downloading macOS Tahoe 26.2
Password:
Downloading: 62.47%
Downloading: 93.73%
Downloading: 100.00%
Downloaded: macOS Tahoe 26.2
Restarting...
┌───┬──┐ __| __|_ )
│ ╷╭╯╷ │ _| ( /
│ └╮ │ ___|\___|___|
│ ╰─┼╯ │ Amazon EC2
└───┴──┘ macOS Tahoe 26.2
