I have a non-rooted Verizon Samsung Galaxy Nexus, and I wanted to try the "adb backup" feature. Possibly in preparation for rooting, but that's not really relevant to the question.
I want to back up everything.
I used this command on a Windows 7 command line:
adb backup -apk -shared -all -f c:\mybackup.ab
My phone prompted me for my password, which I entered, and clicked the button to begin the backup.
I let it run for several minutes, and the cmd window returned to C: prompt. On the phone, it was still flipping through filenames.
At some point, it stopped flipping through filenames but the back up selection buttons were still greyed out. C:\mybackup.ab existed, and was about 1GB in size, which is significantly smaller than I thought it should be, especially since I said to back up the apk files and the whole "shared" space (/mnt/sdcard).
What should I see (on the PC and on the phone) when the backup process completes? How long should I wait, if I estimate I'm using about 10GB of the 32GB of space?
Edit: ... and/or is that the wrong set of command line arguments?