I bought a new 160G HD for an older Athlon 700 box. The old HD was only 30G and was full. I'm running XP.
I've installed the 160 as Disk 0, Primary Master, and the 30 as Disk 1, Primary Slave. I see the 30 under Computer Management> Storage, it says "healthy," but it has no drive letter and I can't see it from My Computer or Windows Explorer.
I searched around and found out about DiskPart. I can see the 30G in the disk list (it's disk 1) and in the volume list (it's volume 3), but diskpart won't let me do an assign. It complains.
I looked at help for diskpart and found that you can't use assign for a boot disk. Well, the 30 still has the old MBR on it.
I've looked all over the web and many people have this same issue (i.e. wanting to copy files from their old drive onto their new drive) and the solution is always, "just install the old drive as a slave on your new machine."
So what am I doing wrong, or am I doomed because of the MBR?