I have recently used a transfer cable with an Xbox 360 hard drive in order to connect it to my Xbox to allow for more storage. Now I have removed the configuration of the hard drive to be used for additional storage, but when I place it in the correct Xbox hard drive location it is not recognised, can I maybe have help resetting the hard drive to default in order for it to be recognised by the Xbox?
As far as I know there is no way (or a very difficulty way) to get your xbox 360 hdd back to stock settings. The xbox360 hdd slot only reads drives with an specific pertition and since you change the settings (I guess to ntfs or fat32) your xbox doesn't want to read it anymore. You could try to search for a program that reformat your hdd so your xbox 360 recognizes it again. You could also try to connect the hdd trough a usb port.
So, yes you have to reset / format it