DriveCompare lets you compare drives and folders, as well as create and verify ASC MHL manifests—an industry-standard format for reliable file verification and comparison.
Compare Drives tab
Select which 2 drives or directories you want to compare and select the Hash type. If None is selected it will only compare names and file sizes, but not check that the files are exactly the same.
You can ignore ASC MHL directories, since they will be different since the manifest is for that particular drive. You can also ignore empty directories.
After Compare you will get the result, which can be exported as an RTF Report or printed and there saved as a PDF. In case there are missing files you will get a “Resolve” button which opens a window where you can copy the files from A to B and B to A and resolve conflicts between files with the same file name. The copy will use hash verification.
Manifest (ASC MHL) tab
ASC MHL (Advanced Storage Comparison – Manifest Handling Layer) is an industry-style specification for structuring file comparison manifests. It standardizes how file metadata—such as paths, hashes, sizes, and timestamps—is recorded, enabling consistent and reliable comparisons across systems. In DriveCompare, ASC MHL provides the foundation for interpreting and processing file differences in a uniform way.
Create – Generates an ASC MHL manifest for the selected folder and all subfolders. Existing manifests in subfolders are automatically detected and referenced.
Check (Diff) – Compares the selected folder contents against an ASC MHL manifest using file names and sizes to quickly identify differences.
Verify – Validates files against an ASC MHL manifest by recalculating hashes, ensuring data integrity, and updating the ASC MHL chain.
Compare Manifests – Compares two ASC MHL manifests to identify differences in file structure, metadata, or content. This method is not part of the ASC MHL standard and relies on the accuracy of the manifests themselves.
TRY & BUY
Try the demo version for free. It supports comparing drives or directories with up to 500 files, and creating or checking ASC MHL manifests with up to 50 files.
Download and purchase via Editingtools.io: https://editingtools.io/software/drivecompare/
