

I am thinking of buying a new iMac. I switched to Apple in 2011 with an iMac that then had display issues and they replaced it. They replaced it again 3 years ago when it had more display problems, so it is my third but still a 2011 model. In replacing it, they erroneously deleted my Aperture purchase (I got to mainly for photography), and then refused to acknowledge I have a licence, so I can't get the last upgrade. I am heavily invested in Aperture, so that's a big issue for me. I have also done a lot of work on video editing using iMovie, but that still holds a lot of mysteries for me, and my version 9.0.9 has just started to refuse loading as it's incompatible with the OS. I tried the newer version but don't like it as much, so I may keep this iMac on an older OS and just run iMovie 9.0.9 and Aperture on it, while I try to move ahead with more up to date software. I have tried partitioning, but it's a pain when starting up, so I undid it after a while.
I take your point re advances: I started in computing as a programmer probably before you were born, in 1973! I worked on a Honeywell GE115 with 8k (yes, 8k!) of memory with no storage devices at all, on a machine that needed a huge air conditioned room. Input was via punched cards (on a machine that I operated for patches), and the only output was a line printer on green & white lined paper. I followed programmes' progress via two switch lights on the front panel, and diagnosed any problems via machine code in a memory dump. I spent over 40 years in IT, developing first on-line systems, designing & installing one of the first digital networks, installed early PC's, and managed and developed hundreds of staff, in companies that I part owned and managed. I have tried to keep a semblance of technical expertise but would be the first to admit that I still struggle at times to understand some of the nuances of Apple technology. A good deal of my career success was down to always surrounding myself with good technical people, and valuing them highly ..... and not being afraid to ask for help. Hence my presence here, and I thank you and all others who have replied for your help, much appreciated.