Ok, the following is what I want to do.

I have two 500GB disks, one with the system partition to boot, and a second one, which served as mirror backup since now. But I also have en external 500GB disk, as backup too, if both disks inside would die.

Now I thought having an original plus 2 copies would be too much, and I bought an external 1TB for the backup now, but instead of also buying a 1TB internal disk, I want to span one partition on the 1st disk with the whole 2nd disk.

Disk 1:

- C:\System = 25GB (booting partition)
- D:\Temp = 25GB
- E:\Emulation = 450GB

Disk 2:

- F:\Mirror = 500GB

Ok, so far so good. I know that I have to convert the basic disks to dynamic to be able to span them, so I already converted disk 2 to dynamic. But as I cannot convert a partition, but only the whole disk, I'm unsure to convert disk 1 now to dynamic, because I don't know if I will lose my partitions, or if I will still be able to boot from that disk.

So my questions are:

- can I convert disk 1 to dynamic without losing data (or partitions)?
- if it works, can I then convert back to basic, or should I just leave the disks as dynamic?
- is there perhaps a software that makes this task easier?

Any help is appreciated.
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