You have two choices: transfer files to another Mac/external hard drive and make a backup of the important files. Please ensure the security of your data on your Mac hard drive. Wipe USB Drives: Erase Your Data Completely & Securely! What to Do Before You Sell, Give away, or Trade in a MacBookīefore talking about how to wipe MacBook (how to wipe a MacBook Pro to sell), I’d like to show users what they should do before erasing the Macintosh HD. What should you do? Do you need to take out the disk drive and ruin it? How to wipe a MacBook completely? All of these questions will be answered later. However, you need to remove the data completely when you plan to change a hard drive, sell/trade in the old Mac, or give away your MacBook to others. In general, you need to protect hard drive data well to prevent personal data loss/leakage.
What to Do Before You Sell, Give away, or Trade in a MacBook.
