Lost partition map after attempting to install unsupported WinXP in a Mac via Bootcamp
Few days ago I attempt to install a SP1 WinXP not supported by Bootcamp in a Mac drive. During installation, and after to select the destination disc, the installation forced me to format the disk to proceed installing WinXP so I've skip installation. But on restart there was no drive, only the optical drive, available and of course I can't boot the disk.
I've connected the afected HDD to a Sata to Usb case, and via Terminal (Mac) I've started Testdisk, but I'm not sure to use it and I don't want to loose all my data.
In Testdisk steps I just arrived to found partitions: 1-EFI, 2-HFS+, 3-FAT (Bootcamp), but the EFI partition is in FAT format and I dunno if I have to change to HFS+ or do what? FAT (Bootcamp) partition have several warnings but not overlaps with HFS+ partition and I can delete it so I've no data in FAT p. Someone could help me to restore the disk of this disaster?
Thanks so much.

I'm pretty sure the Windows
I'm pretty sure the Windows installer only messed up your partition table and did not actually delete any of your data. Testdisk is the correct tool for fixing this.
I believe testdisk is detecting the EFI partition correctly. The first partition is FAT. It's around 200 megs large, correct?
The basic operation of Tesdisk only works on the partition table, so none of that actually destroys any of your data. I would just let it do what it thinks is correct.
Hey Andrew thanks for quick
Hey Andrew thanks for quick response! :-D Finally I've fixed it. After find the partitions I've rewrited the map and then unmount the disk and mount again, and voila now it's working is fantastic! I thought that never would see all my data but I was wrong, and also the disk is bootable again :-D