I just bought a mid 2007 20" iMac just to play around with and get back into using a mac. Had i known that it wouldn't be able to upgrade to Mojave i'd would've gotten a new one, didn't really pay attention. Anyway i was wondering if there was anyway to get a new hard drive or upgrade my current? The latest OS i have is EL Capitan, i would like it to be a little faster as well. it won't let me upload a pic of my specs, it has a 2GHz intel core 2 Duo, 4 GB 667 MHz DDR2 SDRAM, ATI Radeon HD 2400 XT 128 MB. Any help would be greatly appreciated, Thank you!