ACSP Startup and System Issues 2

Question 1

What does a solid tone (no startup chime) or continuous blinking power LED indicate on an Intel Mac?

Accepted Answer

A solid tone with no chime typically indicates a hardware issue — RAM failure is a common cause; a continuous blinking power LED indicates the Mac couldn't complete startup

Answer

A solid tone is normal on newer Macs; the startup chime was removed in macOS Catalina

Answer

A continuous blinking power LED means FileVault is encrypting the drive in the background

Answer

A solid tone indicates the Mac is in Target Disk Mode and ready for a cable connection

Question 2

What is kernel panic on macOS and what information should a technician collect when diagnosing it?

Accepted Answer

Kernel panic is a fatal system error where the macOS kernel cannot recover; technicians should collect panic logs from /Library/Logs/DiagnosticReports/ and the crash reporter info shown at restart

Answer

Kernel panic only occurs on Apple silicon Macs and is resolved by resetting the SMC

Answer

Kernel panic is the same as a spinning beachball (wait cursor) and indicates an app has hung

Answer

Kernel panic logs are stored in the Time Machine backup only and cannot be accessed from the live system

Question 3

What does it mean when a Mac displays a folder with a flashing question mark at startup?

Accepted Answer

The Mac cannot find a bootable operating system — the startup disk is not set, is missing, or its macOS installation is damaged

Answer

The Mac needs a firmware update that can only be installed from Recovery

Answer

The question mark indicates the Mac needs to be activated before first use

Answer

The flashing folder means the Mac is in Target Disk Mode and searching for a host Mac

Question 4

What is the Apple Diagnostics tool and how do you access it on Apple silicon Macs?

Accepted Answer

Apple Diagnostics tests hardware components (logic board, memory, storage, wireless); on Apple silicon hold the Power button at startup, select Options, then Command + D after selecting the volume

Answer

Apple Diagnostics is a third-party tool that must be downloaded from Apple's support website before running

Answer

Apple Diagnostics is accessed by holding D during startup on both Intel and Apple silicon Macs identically

Answer

Apple Diagnostics is only available during an Apple Authorized Service Provider appointment and cannot be run by end users

Question 5

What does macOS's System Integrity Protection (SIP) protect and how does it affect technician workflows?

Accepted Answer

SIP protects critical system directories (/System, /usr, /bin, /sbin) and processes from modification even by root; disabling it for certain tasks requires booting to Recovery and using 'csrutil disable'

Answer

SIP requires admin authentication for any change to system files but allows root access without restriction

Answer

SIP is a network security feature that prevents unauthorized connections to protected system services

Answer

SIP only protects against external attacks and does not restrict local admin user operations

Question 6

How do you use the macOS Recovery Terminal to reset a forgotten admin password?

Accepted Answer

Boot to Recovery, open Terminal, run 'resetpassword', which launches a GUI tool to reset any user's password or set a new admin account

Answer

Boot to Recovery, open Terminal, run 'passwd [username]' to reset the password without any additional tools

Answer

Password reset in Recovery requires an Apple ID linked to the account — command line methods are disabled for security

Answer

Boot to single-user mode, mount the root volume read/write, and use 'dscl . passwd /Users/[name]'