Not too difficult and I followed this thread:

https://www.bimmerfest.com/threads/d...-drive.841458/

If you are fairly familiar with partitioning HD's it's really easy, but you have to get a few things:

1) Transfer cable. What I did was pulled my CIC HD and then copied the image first to my desktop to back it up and then imaged it to the new SSD.

I went with this cable:

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

2) Hard Drive - Get the Zheino 128GB SSD and search around eBay for one or elsewhere as it's been tested to work and works flawlessly. Some of the other brands cause issues. For example, I initially went with an MSata SSD with an IDE adaptor tray and it would work fine for a week or two and then my music partition would disappear. Ended up pulling it and installing the Zheino Drive as it's an IDE interface as with the older interface/bus of our cars. I've had the Zheino drive for over a year with zero issues, so my guess is the drivers for the adaptor tray were causing screwy issues.

Here's the drive I used, but you'll have to hunt around as you need an IDE 44pin interface:

2.5inch PATA IDE 44Pin 128GB SSD - IDE 2.5 SSD - www.zheinossd.com

You'll note the SSD really won't increase the speed of your system as we are limited by the older bus system in the E70, but it should last longer and you'll have a backup of your CIC and can get back up and running without a trip to the dealer.

Be cautions and slow when removing the trim around the radio as it can be a bit tricky, but there are plenty of YouTube videos on that as well.

Let me know if you have any more questions and if I can help you out once you get your E70.