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Thread: formatting a usb to have 32kb cluster?

  1. #1
    Join Date
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    formatting a usb to have 32kb cluster?

    Format a usb to have a 32kb cluster?

    How do I do this? (remember this is the absolute beginner section, im not a computer programmer, nor a ubuntu master)

  2. #2
    Join Date
    Jul 2010
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    ozarks, Arkansas, USA
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    Xubuntu 22.04 Jammy Jellyfish

    Re: formatting a usb to have 32kb cluster?

    lolful64; Hi !

    If I am not too mistaken, the utility "fdisk" will permit formatting with alternate blocks.
    see:
    Code:
     man fdisk
    to start with.
    Google and DuckDuckGo are your friends for additional tutorials.
    hth

  3. #3
    Join Date
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    Ubuntu 14.04 Trusty Tahr

    Re: formatting a usb to have 32kb cluster?

    There are some switches in mkfs.msdos:

    -s sectors-per-cluster
    Specify the number of disk sectors per cluster. Must be a power of 2, i.e. 1, 2, 4, 8, ... 128.

    -S logical-sector-size
    Specify the number of bytes per logical sector. Must be a power of 2 and greater than or equal to 512,
    i.e. 512, 1024, 2048, 4096, 8192, 16384, or 32768.

    Code:
    man mkfs.msdos
    I would expect breakage. Some USB flash controllers will only work at the default cylinder, heads, sector size. Changing the cluster ratio might mess up read and write access due to timing, buffer, and other issues due to the limited drive controller.

    Let us know what works for you. Why do you need this?
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  4. #4
    Join Date
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    Re: formatting a usb to have 32kb cluster?

    What are you trying to achieve? USB sticks can be a problem, particularly the larger ones that are formatted to exFat which requires a special ubu package to manage them properly. I'm lazy and plug mine into a ******* machine and then format them with the HP USB Format Tool.

    Here's an Ubu thread I found:-

    http://ubuntuforums.org/showthread.php?t=1983349

    and this may help:-

    http://apcmag.com/how-to-enable-exfat-in-ubuntu.htm
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