Convert
DiskPart
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Syntax: convert basic [noerr]
converts an empty dynamic disk into a basic disk.
Important
The disk must be empty to convert it to a basic disk. Back up your data, and then delete all partitions or volumes before converting disk.
noerr
For scripting only. When an error is encountered, specifies that DiskPart continues to process commands as if the error did not occur. without the noerr parameter, an error causes DiskPart to exit with an error code.