Un­der­stand­ing startup tones

Mac Format - - TO THE RESCUE -

One tone re­peat­ing ev­ery five seconds

This means there’s no RAM in­stalled in the Mac, so in­stall some! Three suc­ces­sive tones and a five sec­ond pause, re­peat­ing on a loop

This means the RAM has failed an in­tegrity check; re­place it.

One long tone while hold­ing the power but­ton

An EFI ROM up­date is in progress on pre-2012 Macs. Three long tones, three short tones, and then three more long tones

Mac is in EFI ROM re­cov­ery mode.

Newspapers in English

Newspapers from Australia

© PressReader. All rights reserved.