ACMT macOS Troubleshooting 3

Question 1

Which Terminal command lists all partitions and volumes on a Mac, useful for diagnosing disk issues?

Accepted Answer

diskutil list

Answer

'diskutil list' displays all disks, partitions, and APFS containers on the system, making it essential for diagnosing disk configuration issues.

Question 2

A Mac fails to boot after a macOS update and shows a progress bar that stops partway. What should the technician try first?

Accepted Answer

Boot to Recovery Mode and run Disk Utility First Aid

Answer

A stalled macOS update progress bar is often caused by a file system error, and running First Aid in Recovery Mode can resolve it without erasing user data.

Question 3

What is the purpose of the 'Erase Mac' option available in macOS Recovery on Apple Silicon Macs?

Accepted Answer

It erases the disk and reinstalls macOS, returning the Mac to factory state

Answer

'Erase Mac' in recoveryOS on Apple Silicon Macs erases all content and settings and reinstalls macOS, preparing the device for a new owner or for depot repair.

Question 4

A customer requests that their data be migrated to a new Mac. Which Apple tool should the technician use?

Accepted Answer

Migration Assistant

Answer

Migration Assistant transfers user accounts, applications, settings, and files from an old Mac to a new Mac using Wi-Fi, Ethernet, Thunderbolt, or a Time Machine backup.

Question 5

Which file system format does Apple recommend for the primary macOS startup volume on modern Macs?

Accepted Answer

APFS (Apple File System)

Answer

APFS is Apple's modern file system, required for SSD-based Macs running macOS High Sierra and later, offering features like snapshots and space sharing.

ACMT - Apple Certified Macintosh Technician Practice Test

ACMT - Apple Certified Macintosh Technician Practice Test

ACMT macOS Troubleshooting 3