Emsa DiskCheck - DVD/CD/HDD Disk Checking and Benchmarking Tool

Windows Utility
Operating Systems supported: Windows XP, Windows Vista, Windows 7, Windows 8, Windows 8.1, Windows 10

Current version: 1.2.29 -      (zip file, 323 KB)       

Installation Notes:
  • VB Runtime (rare): This product requires the VB6 Runtime. On most Windows Systems (XP and above), it is already installed so there's nothing to do. However, if you receive any error messages when launching the program after install, please download and install the runtime from Microsoft (1MB). Reboot if asked.

Product Information:

Emsa Disk Check is a dual-purpose utility, for disk checking/scanning and also benchmarking. It scans/reads the entire contents of a disk (DVD, CD, or HDD/SSD/SD card/USB stick etc) and shows any read errors that may appear; also shows drive speed information, progress statistics etc.

You can use it to do a full disk check of the surface of any CD or DVD, for example if you have just scratched a disk and want to see if it is still readable, etc. Also, provides drive benchmarking, easy comparing speeds through 'X' speed multiplier factor, in real conditions. It was designed with simplicity in mind, but usefulness for the user.

You can use it to do a full check of the surface of any disks, for example if you have just scratched a disk and want to see if it is still readable, or if you want to check all your cd library for time or usage related faults. You can also use it for drive benchmarking, easily comparing speeds through 'X' speed multiplier factor, in real conditions. You can also scan hard drives or even floppies - and get real condition performance information accordingly with drive performance but also with the way data is stored on it, which obviously impacts on overall performance. Make sur you clean the CD or DVD before doing tests, to remove dirt and ensure tests are accurate.

Benchmarking Information: By design, this application does not use direct disk access and sector reading. Instead, it uses regular disk access functions provided by the operating system, just like any usual application will do; we did this to get as close as possible to the real usage conditions. This allows the user to check the actual max speed of the drive in 'real' conditions and not the theoretical ones. This means your drive may be capable of higher speeds in theory, but what you see is how fast it actually runs. Something like 'show me how fast this disk runs on my drive, using the computer configuration i have right now'. Performing a benchmark on a hard disk is also useful, and you can then make a comparison with your CD or DVD drive.

Windows 10 - Important: You need to always run this program as an administrator in order to function properly. Look at the bottom of this page, in the "Windows 10 setting" section for instructions.


Emsa DiskCheck has the following main features and characteristics:

- useful to quickly and fully scan removable disks like CD, DVD for surface defects like disk scratch problems, bad CD-R/RW DVD-R/RW writes, etc.
- checks DVD, CD, HDD, SSD, SSHD, USB sticks, SD card, and even old floppy disks (if still available)
- useful for benchmarking drives like CD, DVD, HDD or any other storage type
- shows which files are "locked" by the operating system
- useful and simple speed comparison (shows the 'X' multiplier speed comparison with CDs and DVDs "X" speed factor)
- scans/reads a disk fully until completion or user stop, at the maximal speed available for this particular computer
- reports progress, statistics (files, folders, time elapsed, estimated time remaining)
- reports any errors encountered (error count and log entry for each)
- Runs on any Windows version including older ones like Windows XP and even on slower hardware.

Tip: You may want to try reinserting a disk and performing more than one check, for more accurate results of benchmarking, as different reads of same disk may be performed at different speeds by the same drive.

Audio CD: This product does not scan copyright protected audio/video media, including protected audio CD's. With audio CD, some will be scanned but others not (in this case scan stops after a couple seconds). Normal computer-recorded CD's and DVD's are generally scanned correctly with no issues.

Simply click on the main 'Check' button to begin scan. The button then turns into 'Stop' like in the above screenshot, allowing to stop scanning. Starting / stopping may take a few seconds depending on drive spinup time. Flushing cache on start might take a few seconds to complete, depending on machine configuration, but gives a more accurate benchmark.

We made this program, because we needed a tool like this. There was a CD check tool we had been using for a while, but it did not scan DVDs (not to mention HDD or other drives) and it was lacking extensive information about the scan process, time and speed. One may usually want to know how good is the disk and how fast it can still be read, and not just if it is still readable afterall.

We also needed to make benchmark comparison, especially for hard drives. If data on hard drive is stored as many, smaller files, the performance of the disk goess much slower. This significantly impact the hard drive's operating speed in real conditions, so we needed to know how the drive is actually peforming in such cases.

This program does not use heavy API calls, in an effort to ensure maximal compatibility with most Windows OS and machines. It runs virtually on all Windows operating systems.

Windows 10 setting

This product works just fine on Windows 10, but you have to do the additional settings below (run as an administrator). ( On Windows 7 and Windows 8.1 this is recommended but not mandatory ):

Here is how to set it to run as an administrator (for all users on your PC):

  • 1. Go to program installation folder, usually C:\Program Files (x86)\Emsa DLL Register Tool
  • 2. Right-click on RegTool.exe and select Properties
  • 3. Go to "Compatibility" Tab, then click on "Change settings for all users"
  • 4. Check "Run this program as an administrator", click Apply and OK, then OK again.
  • 5. Close and restart the program.
That's it - you're done! The program should run fine now.


For anything else, see the Help & Troubleshooting section, the button at the bottom of this page.

System requirements

Any Windows machine with just a couple mbytes of free disk space will do.

Emsa DiskCheck: DVD/CD/HDD Disk Checking and Benchmarking Tool: Windows Utility

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