Convert Encrypted Dynamic Disk to " Basic Disk " without Deleting?

Hello,

I need help ...

I changed OS and my encrypted internal hard drive is not recognizable.

This is just a " second " internal hard drive, not the primary (C).

I am on Windows 7 and my hard drive (the second one) is encrypted with Truecrypt.

I looked at this tutorial: https://www.disk-partition.com/dynamic-disk/convert-dynamic-to-basic-without-deleting.html

but I block at this stage:

Step 2: Since you’re going to convert a dynamic disk to
a basic one, choose Method 1. Method 2 is for dynamic volume to basic
partition.

...

what should I choose?

This second internal hard drive is fully encrypted, I did not create other partitions, it is in "one".

I can not risk losing all my data just to "try" ...

I really appreciate any help you can provide.