See links to Apple.com
It is not allowed.
well if it's on your ipod set your ipod to manual manage music then drag and drop your music without erasing your music
oxymoron, formatting a drive is erasing the data.
If it's not formatted FAT32 already, you will have to format it to FAT32 which erases the data on the drive.
Well if you mean restore by reset then yes. Just plug it into your computer and choose to restore to factory settings.
Yes
Not without erasing the jailbreak.
Use the following commands in Windows XP: Start, Run, type sfc /scannow This will restore all Windows files and drivers back to their original condition, without losing or erasing information.
Before connecting the iPhone to the different computer, in iTunes go to Edit>Preferences>Device>select Don't Sync Automatically. When you connect the iPhone go to Pictures tab and Other tab (on top of the sync screen) and disselect Sync Pictures and Sync Contacts. Then press apply (bottom right corner).
you can't. your stuff is in the memory.
“does verizon have a wireless unit for computer service without a land line phone? We have verizon cells already”