Resize Invalid Drives

  • 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 26, 2023
I recently ran a ValiDrive on a "1TB" drive I got for $20. Needless to say it wasn't really 1TB. I'd hate to dispose of this seemingly working ~54GB storage device. Is there a way that I can "reformat" the drive to make it appear as the actual size?


    22.9 KB · Views: 81
Do you really want to trust this with your data???

First of all, 54.7 GB is a VERY odd size. It suggests a cheap 64 GB NAND that is now only partially functional. How long before another portion of this NAND fails?

And then there is the hacked firmware. Do you really want to trust that, not knowing how the firmware now works, or what the firmware may or may not do? Or when? I never would, but YMMV I suppose.

This issue was well discussed over in the NG. The almost 100% consensus was "NO! Do not trust/use such a device!"

This device is fit for either the trash or as a test specimen for future ValiDrive and/or SpinRite testing. Note: This device may stand up to SR level 1 or 2 scans. But I suspect a SR scan at L3 (or higher) is likely to kill what is left of this device.
The way to avoid e-waste in this situation is to be very careful about what you buy (trust only a few well known brands and still verify) and if you order something that was supposed to be good but turns out to be junk, don't put up with being ripped off... SEND IT BACK.
  • Like
Reactions: MikeJc
@Backlog8685 I agree about not trusting the drive. It's unfortunate that you got scammed. The fraud in this industry is disgusting.

May your bits be stable and your interfaces be fast. :cool: Ron
running potential malware I find a VM useful, you clone the VM, run the suspect software on it, and most malware will look to see if it is running on a VM, and not drop the malware, so you can do what it says it will do, close the VM, and delete it. Yes I do have 16G of a vanilla XP install, with multiple copies, each doing exactly one program, and the base copy never actually opened.