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Emsa DiskCheck - CD/DVD/HDD Disk Diagnostics Utility
Freeware for Win9x/ME/NT/2k/XP/2003

Current version: 1.0.77 - Download product (zip file, 192 KB)     Activate product here

Important Installation Note: This product requires the VB6 Runtime which should be downloaded from Microsoft (1MB). Please install the runtime before running the program (and reboot if asked). Please note that on some systems (XP and above) the runtime usually does not need to be installed.

Please refer to the License.txt file included in the zip file for licensing information.
   Emsa Disk Check is a dual-purpose utility, for disk checking (prescan and full disk reading) and also benchmarking. What it does, is scanning/reading the entire contents of a disk (CD, DVD or hard drive; or even floppy) and show any read errors that may appear, but also show drive speed information, progress statistics etc. 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.


Emsa DiskCheck has the following main features and characteristics:

- useful to quicky and fully scan removable disks like CD, DVD for surface defects like disk scratch problems, bad CD-R/RW DVD-R/RW writes, etc.;
- can check CD-ROM, DVD, hard disks, even floppy disks;
- useful for benchmarking a drive, be it CD, DVD or HDD;
- shows 'locked' files on disks
- useful speed comparison (shows the 'X' multiplier speed comparison with CDs and DVDs) with possibility of switching in CD/DVD 'X' mode
- it scans/reads a disk fully until completion or user stop, at the maximal speed available
- reports progress, statistics (files, folders, time elapsed, estimated time remaining)
- reports any errors encountered (error count and log entry for each)
- prescan accesses the disk table of contents and computes file information, showing the total number of files and folders and total space on disk before running the full scan.

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.

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 also takes a few seconds to complete, depending on machine configuration.

Tip: While scan is running, click on the any of the two blue text boxes in the Statistics area, in order to toggle speed comparison between CD and DVD modes.

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 floppies) 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. This program runs virtually on all 32-bit Windows operating systems.

System requirements

Any usual Windows machine with a couple mbytes of disk space will do. 800x600 min screen resolution.

Emsa DiskCheck: CD/DVD/HDD Disk Diagnostics Utility: Freeware for Win9x/ME/NT/2k/XP/2003
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