


Removing the iMac display screen is the only way to gain access to the inner components of the computer. If you don’t upgrade to an SSD when you order your iMac, the only way to upgrade to a solid state drive afterward is to remove the iMac screen.

A solid state drive is also slightly faster than Apple’s Fusion drives, which are a combination of flash storage and a traditional spinning hard drive. Hard drives that run at 5,400 RPM or 7,200 RPM are noticeably slower than modern solid state drives. This may surprise you, but even in 2019, some iMacs come with a 5,400 RPM spinning hard drive installed. Before we get into how to do it, let’s cover a few reasons why you might want to consider booting to an external SSD with Mac OS Mojave installed.
