Computers Apple almost lost in the price even after several years, so the sale of the old Mac - a great way to cover part of the purchase of the new spending. The main thing - do not forget to do a few things before the transfer device into the wrong hands.
Create a backup using Time Machine
First of all it is necessary to make a backup of all your data, then to safely restore your workspace to the new computer. The proper way to - use Time Machine and keep the system partition contents completely.
For this we need an external hard drive or network drive suitable size. We connect our drive, we go into the system settings, activate Time Machine and choose the drive on which to store the backups. Then we press "Backup now" in the most utility, or right in the menu bar. This will keep absolutely all of our data: applications, system settings, documents, media files.
In the future, "Migration Assistant" you will also be able to easily transfer to your new Mac ready and already configured system.
Deavtorizuem Mac in iTunes
Another point, which is important not to miss. Since the iTunes account, you can attach up to five computers, it is important to deauthorize Mac before you pass it on to the new owner.
This is done very simply. In iTunes, you need to open the menu "My account» → «Authorization" and select "Deauthorize this computer."
To use your account on a new Mac, you need to reverse the procedure.
We leave the account iCloud
The iCloud is stored a lot of personal information, so be sure to get out of your account and disable the "Find Mac». This can be done under iCloud System Preferences.
Exit the iMessage
And the last bridge connecting you with a Mac. Do not forget to log out in iMessageIf you do not want your message read by strangers. Exit button located in the Settings application. Open them, go to the tab "Accounts", look for the one you are using, and then click "Exit."
Resets macOS
Now that all your data is backed up, and accounts decoupled remains to reinstall the OS and Mac to transfer to the new owner in its original form. For this procedure it is necessary to boot into recovery mode (hold Command + R keys at power up), wipe the disc using "Disk Utility", and then, without leaving the recovery menu, select "Reset macOS ».
After installation is complete, simply turn off the Mac, and then the new owner will receive a computer as out of the box, and when you turn to open all settings screens.
successful you sales!