Right now Microsoft is selecting people randomly to allow them to update to Windows 10. Anyone with windows 7 or Windows 8 you can upgrade for free, however you need to wait till the update appears. To bypass this, download the following tool:

Flashing the SD Card using Windows Download the image from here Extract the image file from the downloaded .zip file, so you now have “node.img” Insert the SD card into your SD card reader and check what drive letter it was assigned. You can easily see the drive letter (for example G:) by looking in the

So I had problems where everytime I exited MobaXterm my key would disappear.   After some browsing around I found a file that said this:   WARNING: You should not store anything in MobaXterm HOME directoy (/home/mobaxterm): with your current settings, this folder is not “persistant”, so it will be cleared at each MobaXterm restart.

Here are some useful links I have found from around the web:   Git Branch Merging   Read Only Raspberry Pi How to make RaspberryPi truly read-only, reliable and trouble-free   Swift Programming