As soon as a drive starts showing any sign of instabilities, it has a limited amount of time before it will crash completely, so accessing it may cause further degradation. The appropriate length of the test depends on the condition of the drive. When you'd like to stop testing, you can press Escape and see the summarized results. At any point during the test, you can press Spacebar to jump forward by about 1% of the drive's capacity. AHCI is recommended wherever possible!Īfter selecting your drive, you only need to press "m" to begin testing it. the utility will list all drives in the system, however in that case RDT must work in PIO mode, which will be very slow. ATA controllers in IDE mode are fully supported, i.e. The current release will only list one drive in the system if the ATA controller is set to AHCI mode. Please keep in mind that not all USB sticks are DOS bootable, so if you get any boot related errors then try using another USB stick.Īfter entering the software, you should select the index of the drive you would like to work with. The USB stick should then become FreeDOS bootable and the RDT utility should start on its own right after your Mac/PC boots up from it. bin image file should be restored sector by sector to a bootable USB stick using a software tool, or command line in OS X. Branded PCs are more likely to have problems. RDT should work on 2011+ Macs and on most PCs built from general purpose parts. Unlike almost all other software tools, this utility works directly through the ATA controller rather than through the BIOS/OS, which allows for increased operational stability and more accurate identification of hard drive read instabilities. It can also deactivate the Master Boot Record (MBR) in order to stop a drive from being mounted by any operating system ( here is why mounting is a bad idea for data recovery purposes). This free DOS-based software can be used to test hard drives for presence of read instabilities. Rapid Drive Tester (RDT) Software - Download Here
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