How can I tell the version of my DVM2's operating system?
You can query it with a serial connection using ?V and pressing enter. You can look at the Release Notes page of the DVM2's web interface. These are the recommended ways.
If you are in a pinch, and you are looking on the DVM2's drive itself, as you would when it is plugged into your computer, you can use the follwoing method. You can look in the os directory, and your os.bin compare file size with the list below. You must look at the file's Properties\Size: to get an accurate read -- not the rounded version shown in Explorer's directory listing. Below is a listing of the most recent versions and their files sizes:
version: size 0.63: 406,929 0.64: 407,537 0.65: 407,073 0.66: 411,985 0.68: 412,257 0.70: 502,053 0.72: 500,741 0.73: 500,933 0.74bet
A: 500,949 0.76: 506,133 0.77: 505,813 0.78: 506,549 0.79: 506,613 0.81: 511,589 0.85: 492,789