I have an older iMac latae 2013 and my new printer requires 10.13 how do I download?

Hello, bubblelady.

How to Upgrade to  macOS 10.13 High Sierra:

These Mac models are compatible with macOS High Sierra:

• MacBook (Late 2009 or newer)

• MacBook Pro (Mid 2010 or newer)

• MacBook Air (Late 2010 or newer)

• Mac mini (Mid 2010 or newer)

• iMac (Late 2009 or newer)

• Mac Pro (Mid 2010 or newer)

For details about your Mac model, click the Apple  icon at the top left of your screen and choose About This Mac.

❗️– IMPORTANT! – Backup your data. (You’ve been warned.)

Learn How to Back up your Mac with Time Machine:

https://support.apple.com/en-us/HT201250

📚 – Check Compatibility of your Mac with newer versions of macOS.

https://support.apple.com/en-us/HT211683

✅ - Download the macOS 10.13 High Sierra upgrade installer here:

https://itunes.apple.com/app/macos-high-sierra/id1246284741?mt=12

(Don’t use FireFox for this link)

The download will place the "Install macOS High Sierra" application in the Applications folder. Double-click the installer to begin the upgrade process.

You don't want to use a flash drive for the Time Machine backup. Flash drives are slow, low capacity and notoriously prone to fail at any time.

Use an external USB hard drive for that process. you want one that is 2X or more the capacity of your Mac's startup drive. For example, if the Mac has a 500GB drive, then buy a 1TB external drive.

You can find good quality drives at https://macsales.com.

Also, please see this regarding using Time Machine to backup your Mac:

https://support.apple.com/en-us/HT201250

>My new printer requires 10.13.

Hi,

Any information about the printer model? An AirPrint enabled model (About AirPrint - Apple Support), should per se work with macOS Sierra 10.12. AirPrint means that you do not have to install printer drivers, providing that the printer and the computer are connected to the same network (Wi-Fi router). However, software from the printer manufacturer may require a newer operating system version (and drivers may be needed for a USB connection).