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  1. Member
    Join Date
    Aug 2010
    Location
    israel
    Search Comp PM
    Greetings
    I'm not sure if this is the right category.
    My question is about disk-on-key. SanDisk 32GB usb3
    I'm probably doing something wrong but after some writes and deletes it became inaccessible
    I have a new letter when I inert it but I cannot see its contents or format it
    Can anything be done?
    Thank you
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  2. Flash memory has limited number of rewrites depending on technology. For example, the original Panasonic SLC P2 cards were rated for 10,000 cycles. Then cheaper MLC cards appeared rated for 2,000 cycles. This is why HDDs are still useful for environments with frequent rewrites.
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  3. I'm a Super Moderator johns0's Avatar
    Join Date
    Jun 2002
    Location
    canada
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    Try it in another computer,if it still is inaccessible then you know the flash drive is gone.
    I think,therefore i am a hamster.
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  4. Member
    Join Date
    Mar 2021
    Location
    Israel
    Search Comp PM
    Try Isobuster
    https://www.isobuster.com/
    License is not cheap
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  5. Not sure how you are good with Russian but you can try at https://www.usbdev.ru/ - they offer knowledge and if i recall also some limited support for English lang people on their forum - you need find who made main IC on your USB stick and then you need to use IC vendor tools. Not sure if you can recover your files - perhaps not - nowadays USB sticks are very complex SoC with lot of software (firmware) running on controller.
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  6. Member
    Join Date
    Mar 2008
    Location
    United States
    Search Comp PM
    Take a look at disk management (diskmgmt.msc from the Run box) and see what it says about the partition/drive
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  7. Member
    Join Date
    Aug 2010
    Location
    israel
    Search Comp PM
    I'm far from 10,000 rewrites
    tried it on another computer with 4 usb entries
    Disk management shows it but I cannot format via disk management
    this usb had no firmware upgrade (last version)
    SanDisk software if for encrypring only
    thank you all
    repair programs are indeed my last resort
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  8. I'm a Super Moderator johns0's Avatar
    Join Date
    Jun 2002
    Location
    canada
    Search Comp PM
    Your usb is bad,
    I think,therefore i am a hamster.
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  9. Member
    Join Date
    Mar 2008
    Location
    United States
    Search Comp PM
    Originally Posted by flannob View Post
    I'm far from 10,000 rewrites
    tried it on another computer with 4 usb entries
    Disk management shows it but I cannot format via disk management
    this usb had no firmware upgrade (last version)
    SanDisk software if for encrypring only
    thank you all
    repair programs are indeed my last resort
    I thought you were trying to restore the data? If you format it you potentially make things harder for yourself.
    Does disk management show a partition type or does it say raw?

    Testdisk may help, it can restore the MBR including the partition table once it finds the data and verifies the start and end addresses
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  10. You could try https://www.hddguru.com/software/HDD-LLF-Low-Level-Format-Tool/ & subsequently use https://www.aomeitech.com/aomei-partition-assistant.html standard edition which is free to create a partition it maybe a long shot but could restore your usb stick to working order?
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  11. Member
    Join Date
    Jul 2007
    Location
    United States
    Search Comp PM
    I recommend HP USB Disk. It's old, but does a good job of force formatting flash drives and SD cards. https://download.cnet.com/HP-USB-Disk-Storage-Format-Tool/3000-2094_4-10974082.html

    Also, it's the nature of flash drives, SSDs and SD cards to fail completely without notice. Which is why others and I don't recommend them for archival use and why you must always have current backups of your files.
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  12. way to Rigel 7 cornemuse's Avatar
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    Mar 2014
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    Cyber Dystopia
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    Yes, no, maybe, I don't know, Can you repeat the question?
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