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  1. #1
    Post How to fix drive recognized in USB chain but wont mount on desktop
    Does anyone know of a utility which allows to low level format USB drives..
    Or any terminal command which allow to access USB hardware and change permissions?

  2. #2
    How to fix drive recognized in USB chain but wont mount on desktop
    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Keller, Texas
    Posts
    56,756
    Your Mac's Specs
    2017 27" iMac, 10.5" iPad Pro, iPhone 6s+, iPhone 7+, Numerous iPods, Mojave
    Welcome to our forums.

    Only one utility that I know of that claims to be able to do low level work on drives: Spinrite

  3. #3
    How to fix drive recognized in USB chain but wont mount on desktop
    IWT's Avatar
    Member Since
    Jan 23, 2009
    Location
    Born in Scotland, Worked in Scotland then England, Now live in Wales
    Posts
    4,815
    Your Mac's Specs
    Late 2015 5K 27-inch Retina iMac, 4GHz i7, 32GB RAM, 1TB Flash Drive, macOS High Sierra 10.13.6
    Does Spinrite work with Macs? I may be a bit out of date with how things have developed, but I thought it was an MS-DOS programme? Maybe things have changed?

    Ian
    Ian

  4. #4
    How to fix drive recognized in USB chain but wont mount on desktop
    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Keller, Texas
    Posts
    56,756
    Your Mac's Specs
    2017 27" iMac, 10.5" iPad Pro, iPhone 6s+, iPhone 7+, Numerous iPods, Mojave
    You can't run Spinrite directly from a Mac or I believe even from Windows. You need to be able to boot with FreeDOS and run it that way:

    SpinRite
    Computer program
    SpinRite is a computer program for scanning magnetic data storage devices such as hard disks, recovering data from them and refreshing their surfaces. The first version was released in 1987 by Steve Gibson. Version 6.0, still current as of September 2018, was released in 2004. Wikipedia
    Developed by: Steve Gibson
    Written in: x86 assembly language
    Size: 0.169 MB executable, 1.40 MB bootable disk image with FreeDOS OS
    Stable release: 6.0 / June 7, 2004; 14 years ago
    Preview release: none (none)
    Operating system: Included FreeDOS (doesn't use OS of host PC) runnable from DOS


    There are ways to run DOS from a Mac but it would be easier to boot from the included FreeDOS. I'm not sure how it would work but I do know back in the good old days, it was an effective program for repairing hard drives at the low level. Of course nowadays, that would not work with SSDs.

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