Well, Apple released Yosemite just recently. I have been using the beta for a few months and it seems that it is pretty ready for prime time. So, I decided to download and upgrade both my 2012 iMac and 2011 MacBook Air. This is a major upgrade so here is what I did.
First, I went through and updated as many programs as possible. I have tons of software, but of paramount importance were my “mission critical” apps like banking, web design, etc. Once those were updated as far as I could go (some updates will not install until Yosemite is installed) I then did the usual upgrade procedures. This was all on my Late 2012 iMac.
I ran permissions on my Mavericks install. Then I cloned my system to an external hard drive and booted from that drive in case Yosemite was a total mess and I needed to clone Mavericks back over. I also ensured that I had a Time Machine backup. Here is a shot of SuperDuper! cloning my machine:
Then, I downloaded the Yosemite installer. Let me tell you it is huge!! The Yosemite installer is a little over 5GB in size and it takes a while to download. Once I had the installer downloaded it tried to install Yosemite on my iMac, but I QUIT the install. I then moved the installer from my Applications folder. The reason for this is if you let Yosemite just go through a normal install it will delete the installer when it is done. But, I wanted to make a standalone USB installer with it (article to follow on this procedure) to use on all my machines and friends machines as well, so I did not complete the installation in the normal manner.
Once I had the installer created on an 8GB USB Thumb Drive, I used it to install Yosemite on my iMac. Installing Yosemite “over the top” of Mavericks OS (or another version of OS X) is quite a process. Here is how it went on my Late 2012 iMac, YMMV. If you have not installed already I urge you to read this article first There are long pauses at places during the install, you just have to wait them out.
- The first screen said “Preparing to Install”. This screen stayed at “1 second remaining” for about 10 minutes. This whole process was about 20 minutes.
- The machine Restarted, there was a progress bar for about 5 minutes, then finished quickly.
- Then it went into the actual install. It said 18 minutes and took about 20 minutes.
- Next was a restart with a progress bar and SBBOD (Spinning Beach Ball of Death) which lasted about 8 minutes and ended at login screen for iCloud. This is a two-step authentication if you have that setup.
After this rather convoluted process my machine finally booted in OS X 10.10 Yosemite. After this startup I automatically did a normal restart. Then I proceeded to install a ton of application updates through the App Store. Then I ran Permissions using the Disk Utility app.
At this point in time, all seems to be working well. A couple of minor Mail Application extensions that I use will not work, but I am sure the developers will fix that post haste.
All in all everything is working fine. I really like Yosemite. I have not tried many of the new features yet, but will in time.