Book recommendation: Why We Sleep by Matthew Walker

  • SpinRite v6.1 Release #3
    The 3rd release of SpinRite v6.1 is published and may be obtained by all SpinRite v6.0 owners at the SpinRite v6.1 Pre-Release page. (SpinRite will shortly be officially updated to v6.1 so this page will be renamed.) The primary new feature, and the reason for this release, was the discovery of memory problems in some systems that were affecting SpinRite's operation. So SpinRite now incorporates a built-in test of the system's memory. 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 please checkout the “Tips & Tricks” page for some very handy tips!

  • 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 4, 2020
Dear Steve, I bought my first copy of Spinrite in 1989 or 1990 have been a big fan of your diverse interests ranging from tech to sci fi and health since. I wanted to thank you for sharing and to let you know of a very interesting book I have recently read which you might enjoy. It is titled Why We Sleep by Matthew Walker; I found it filled another knowledge hole around the whole overall health issue alongside keto, exercise, and supplements such as Vit D.
  • Like
Reactions: rfrazier
@Rezaff I've read a good portion of that book in audio form. It has lots of good info and I recommend it as well. It has a fair amount of evolutionary info that won't appeal to Christians. However, other than that, it's very interesting.

I haven't read the book, but there is a video with Matt Walker being interviewed by Joe Rogan. The video is the two of them sitting for the interview so the audio portion is more 'portable'.