Readspeed before and after Spinrite Level 3

  • SpinRite v6.1 is Released!
    That's right. SpinRite v6.1 is finished and released. For the full story, please see this page in the "Pre-Release Announcements & Feedback" forum.
  • Be sure to checkout “Tips & Tricks”
    Dear Guest Visitor → Once you register and log-in:

    This forum does not automatically send notices of new content. So if, for example, you would like to be notified by mail when Steve posts an update to his blog (or of any other specific activity anywhere else), you need to tell the system what to “Watch” for you. Please checkout the “Tips & Tricks” page for details about that... and other tips!

  • Announcing “BootAble” – GRC's New Boot-Testing Freeware
    Please see the BootAble page at GRC for the whole story.
  • BootAble – FreeDOS boot testing freeware

    To obtain direct, low-level access to a system's mass storage drives, SpinRite runs under a GRC-customized version of FreeDOS which has been modified to add compatibility with all file systems. In order to run SpinRite it must first be possible to boot FreeDOS.

    GRC's “BootAble” freeware allows anyone to easily create BIOS-bootable media in order to workout and confirm the details of getting a machine to boot FreeDOS through a BIOS. Once the means of doing that has been determined, the media created by SpinRite can be booted and run in the same way.

    The participants here, who have taken the time to share their knowledge and experience, their successes and some frustrations with booting their computers into FreeDOS, have created a valuable knowledgebase which will benefit everyone who follows.

    You may click on the image to the right to obtain your own copy of BootAble. Then use the knowledge and experience documented here to boot your computer(s) into FreeDOS. And please do not hesitate to ask questions – nowhere else can better answers be found.

    (You may permanently close this reminder with the 'X' in the upper right.)


New member
Oct 10, 2020
Driv Size  Drive Identity     Location:    0      25%     50%     75%     100
---- ----- ---------------------------- ------- ------- ------- ------- -------
82  250GB Samsung SSD 840 Series         43.6    79.7    45.3   211.2   272.9
83  250GB Samsung SSD 840 EVO 250GB     456.9   510.6   510.6   525.2   523.7

                  Benchmarked: Monday, 2021-01-04 at 08:02

After running Spinrite at Level 3 on both of the drives.
Driv Size  Drive Identity     Location:    0      25%     50%     75%     100
---- ----- ---------------------------- ------- ------- ------- ------- -------
82  250GB Samsung SSD 840 Series        273.0   272.9   272.9   272.9   272.9
83  250GB Samsung SSD 840 EVO 250GB     531.7   533.8   533.7   533.6   533.8

                  Benchmarked: Monday, 2021-01-04 at 14:51
Thanks for posting those! An impressive improvement! :)

Is the first drive SATA II by any chance? Interesting that it seems to have a speed cap at around 273? Or do you reckon that’s just the maximum drive speed on the older model?
@lovecakeboy @bghite it should say above the benchmark table if a SATA3 Capable drive is connected to a slower interface. If you want to rerun the benchmark hit the escape key and run

RS.exe /ident

This will specify the drive and interface capabilities.