Macworld - USA (2019-12-B)

DECEMBER 2019 MACWORLD 143

Mac 911

Solutions to your most vexing Mac problems.

BY GLENN FLEISHMAN

HELPDESK

Answering Your Questions and Sharing Your

Tips About Getting the Most From Your Mac

IMAGE: APPLE

CAN’T ERASE YOUR MAC’S

STARTUP DISK? TRY

INTERNET RECOVERY AS A

LAST RESORT

When you’re trying to wipe an old Mac to

set it up fresh or to give it away or sell it,

you typically want to erase the drive.

Sometimes, you’re thwarted.

The easiest sequence is the following:

1. Select  → Restart if your Mac is

running.

2. Just as the computer starts, hold
   down Command-R, which loads macOS
   Recovery.


3. Wait until the startup progress bar
   appears and release the keys. (If you see a
   globe, skip down to the end of the article.)


4. When Recovery starts up, select
   Disk Utility and click Continue.


5. Make sure you’re selecting your