I have an external hard drive formatted with 3 HFS+ partitions. To cut a long story short I had it connected to a Windows PC and accidentally started formatting the drive to NTFS. As soon as I realised what was happening I disconnected the drive, but the partition table is corrupted. I used TestDisk to gather info about the partitions, and tried to use pDisk to rebuild the partition table, but when I try to do that, I get the message that the partition table is not writable, the device is busy. Anyone know how I can rewrite the partition table?

Update:

The TestDisk results are like this (for settings on Apple Partition Map - I don't know if this is the correct settings, but it's the only one which gives 3 distinct partitions):

```
Start:     262208 End:  419692607 Size: 419430400
Start:  419954752 End: 1258815551 Size: 838860800
Start: 1259077696 End: 1953525151 Size: 694447456

```

Does that look OK?