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

ls -la /Volumes

Answer

df -h

Answer

mount

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

Replace the SSD

Answer

Perform a logic board swap

Answer

Reinstall the RAM

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

It only removes user files

Answer

It resets NVRAM only

Answer

It removes third-party applications only

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

Time Machine

Answer

AirDrop

Answer

iCloud Drive

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

HFS+

Answer

ExFAT

Answer

NTFS

Question 6

What information does the 'About This Mac > System Report' provide that is useful during diagnostics?

Accepted Answer

Detailed hardware configuration including serial numbers, USB devices, and installed RAM

Answer

Real-time CPU temperature

Answer

AppleCare warranty status only

Answer

Network traffic logs