That all depends on their cell phone plan. If they have the unlimited texting than it doesnt matter where the text comes from, its free. But if their plan isnt unlimited and they have say 500 'outside' messages than they are only allowed that many outside of their network
reformat my slave afterwards? I'm reinstalling windows on my main HD
I disconnected the slave drive just to be sure none of the data is lost
When Windows is up and running and a reconnect my slave drive, will I need to format it when I reinstall the Seagate software? Or will it detect that...