Reformat iphone to PC format

I don't think there is a Mac or PC format.

Try reset, then restore if that doesn't work.



http://manuals.info.apple.com/enUS/iPhone_UserGuide.pdf

You misunderstand.
The phone is not formatted for one or the other. Its a separate computer.

If your computer does not recognize it, and the phone is working, then the problem lies in your computer.

Uninstall all apple software from your computer.
Itunes, (you won't lose your backups and data)
Apple Mobile Device Driver,
Mobile Me
Bonjour.

Reboot.
Download and reinstall the latest version of itunes.
(I recommend not starting Bonjour unless you need it, but thats just me).

Then plug the phone in again.



Note:

Someone claimed the other day that 64bit Xp Platforms are not properly supported by iTunes. I don't know if that is true or not.

Message was edited by: icebike

The iPhone is not PC/MAC/Linux. There is no way to reformat it to one OS or another.

If you want to sync it with your PC, you will lose all the information on it (I don't know how to migrate the backup files between Mac and PC, and I doubt that you could do such a thing, given the inherent differences between the OS's)

If you are really running XP 64 then iTunes will never see it.

That's correct XP with x64 is incompatible with the iPhone

Well, as I said, another poster stated that 64bit XP might not be supported.
According to Apple's page:

Windows Software:
Windows XP Service Pack 2 or later, or 32-bit editions of Windows Vista
64-bit editions of Windows Vista require the iTunes 8 64-bit installer
QuickTime 7.5.5 or later is required (included)
200MB of available disk space


The Other poster said it would sync, but it would not install using 64bit XP. I don't know if this is true, because I have 64bit Vista.

I do know that it works find in 32bit XP, running in a virtual machine on Linux.

Before messing around more with your phone, I'd call apple support and see what they recommend for your platform.

Most of that thread deals with Vista 64, which is not having the problems (or at least not for me).

Its not clear any of those posts address XP 64 directly.

a quick google search yeald plenty of info on XP x64 and the iPhone

http://www.google.com/search?hl=en&q=iphonexpx64&aq=f&oq=