Windows 7: My drive0 is "Unallocated Space" How do I format it to NTFS ?

SW means software--the Terabyte Unlimited application in this case.

I was not suggesting you remove it just move it to another location.

Sorry - should have worked that out for myself !

Yes it would break the connection - its not a big problem its just that its handy having it on the hard drive .

Yes that woulnd't be a big deal .

Do you think the existence of this small Primary Partition on this drive is the reason or cause of the instability of the formatting of Drive 0 ?

A partition containing software which erases my partitioning repeatedly is one I would not want on the HD no matter it's other benefits. I've never heard of such interference on an internal HD, although proprietary crapware on an external HD is best avoided when shopping or wiped from the start.

So I would wipe the HD first with Diskpart Clean Command to clear any boot code and then partition it as suggested.

I don't know, but I don't see why you should keep an application on an isolated partition like that.

Do you have any particular reason for keeping it there??

If not, I'd put it on C and then you can better attack disk 0 without any concern for that little partition.

If you move the app to C, you could then use diskpart to wipe disk 0 and then make another format attempt.

I agree with your sentiments in your intial paragraph above except that the SW on that drive is definitely not " crapware " although I now realise , for reasons not connected with this thread , that it was its presence on that drive which was probably causing the symptoms described in my O.P.

I have now removed it from the drive and this seems to have solved the problem .

This problem was caused , not by the use of the SW which I have used for some years without complaint , but by my failing to understand the effect changes I made to my PC , not detailed in this thread , would cause a problem

It is very popular and highly regarded - tho I haven't used it myself TeraByte Unlimited :: Boot Manager :: Partition Manager :: Drive Image :: Disk Copy :: Drive Wipe :: Hard Drive Utilities

Yes it is and I can attest to those views . It is OS independent .

My only criticism is that it is a bit on the "techie" side but that really is no fault of the SW - only that it is not really meant for the likes of myself ?

My problem is that all things re: computers and their associated software , no matter how complicated , fascinate me and my curiosity sometimes gets me into trouble !

Anyway , I'm retired and these interests keep me from taking up golf ! - which I've managed to resist so far ! - just as well as that could be even more frustrating !

I know how you feel mate, a couple short years ago I got my first-ever PC and have become addicted.