Drive scan gives very detailed and accurate results but takes long time. If you want to find only partitions previously existed on the drive you may use fast search for lost partitions which is much faster.
To perform fast search for lost partitions,
|1||Select an object in the R‑Studio 's Drives panel|
|2||Click the Partition Search button|
R‑Studio will start searching for lost partitions showing its progress.
|>||R‑Studio will show fast found partitions in blue.|
You may right-click the partition and select Complete scan to scan the entire drive.