External HDD

[excalibur666]

Hello,
I have a 250 iomega external HDD that when i boot it up in my windows 7 OS it asks me to format and it doesn't allow me to format in NTFS, only exFAT why is this? And when i boot up the HDD in windows xp it asks me to format again but doesn't allow me to format at all. why is that happening? and many thanks in advance.....

excalibur666

 

[ram1009]

I would contact Iomega.

 

[Max1s]

Make a boot CD of GParted Live and format with that.
Windows is stupid sometimes.