Windows dynamic disks store volumes with a private disk manager instead of plain partition tables. To move that data to a normal basic disk, the layout has to be rebuilt while every file is copied, because the two formats are not interchangeable at the sector level.
This guide explains what a dynamic disk really is, why a plain conversion erases everything, and how to clone its volumes to a basic disk with Qiling Disk Master.
The move is worth it when the dynamic feature is no longer needed. If the disk holds a mirrored or RAID-5 volume that still serves a purpose, keep it dynamic rather than losing redundancy.

A direct conversion with the diskpart command does not copy the data, because Windows removes the LDM metadata and leaves the volumes unformatted. Cloning is the safe way to move the files first and convert afterwards.

If the target is already dynamic, convert it to basic in Disk Management first; that operation erases the target, so make sure it holds nothing you need.
Qiling Disk Master reads the file system of each dynamic volume and writes it to a normal partition on the basic target. The destination is overwritten, so move anything you need off it before you start.
Watch the video tutorial below to clone the drive step by step with Qiling Disk Master.
Step 1. Open Qiling Disk Master, choose Clone, and then select Disk Clone.

Step 2. Select the dynamic disk as the source and click Next.

Step 3. Select the basic disk as the destination and confirm that its data will be replaced.

Step 4. Map each dynamic volume to a partition on the basic disk, adjust the sizes, and keep the boot volumes in place.

Step 5. Click Proceed, wait for the copy to finish, then shut the machine down before you remove any cable.

If a spanned volume reports missing members, reconnect every disk that belonged to the volume and try the clone again. A striped volume needs all members present, or the data cannot be read.
Yes, a direct conversion in Disk Management or diskpart erases the volumes. Clone the data first, then convert.
Yes, as long as every member disk is connected while the clone runs.
You can clone one healthy copy of the mirror, then rebuild the mirror on basic disks later if needed.
Yes, if the clone includes the EFI and recovery partitions and the boot order points to the new disk.
Keep them untouched until the new disk has run for a week, then you can reuse or convert them.
Cloning a dynamic layout carries extra risk because the volumes are not plain partitions. Create a full backup of every volume first, so an interrupted copy costs nothing but time.
Watch the video tutorial below to back up Windows and restore it if the clone fails.
Step 1. Open Qiling Disk Master and select System Backup to include the boot partitions.

Step 2. Save the image to a drive other than the target disk and start the backup.

Step 3. Click Proceed to start the system backup and wait patiently until it finishes. You can also tick Shut down the computer when the operation is completed to power off automatically.

Step 4. If the basic disk will not start, restore the image to the original dynamic setup and try again.

Moving from dynamic to basic means rebuilding the layout while the data travels. Keep every member disk online, choose an empty basic target, map each volume to a partition, and clone them one by one. Then set the basic disk first in the boot order and leave the dynamic disks alone for a week.
For more on disk layouts, see How to Clone an MBR Disk to a GPT SSD, How to Clone a GPT Disk to an MBR Disk, How to Clone a Disk with a Different Sector Size, and How to Migrate OS to SSD Without Reinstalling Windows.