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Re: Formatting a 32G or 16G SD card?

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On Thu, Jan 03, 2019 at 12:07:21AM -0800, John Conover wrote:
>I'm want to format a "standard" 16G/32G SD card to OEM format.
>
>Could someone please verify that the following will do this:
>
>    mkdosfs -I /dev/sdX
>    fdisk /dev/sdX n,p,1,default,default,w
>    mkfs.vfat /dev/sdX1
>
>It seems to work, but could someone please verify that its correct?


The "mkdosfs" seems to be superfluous, to me. As far as I can see, that
will put a FAT16 filesystem directly onto the device. You then write a
MBR-type filesystem over the top of it, and then a FAT32 filesystem into
the sole partition.

That said the documentation for mkdosfs "-I" is pretty unclear so
perhaps it's doing something that you intend and I have missed.

I assume  the arguments to fdisk are intended to indicate the
interactive options you would supply when running it and are not
explicitly command-line arguments. I think fdisk will suggest an offset
for the partition that is a multiple of the physical block size already,
which you probably want.


-- 

⢀⣴⠾⠻⢶⣦⠀
⣾⠁⢠⠒⠀⣿⡁ Jonathan Dowland
⢿⡄⠘⠷⠚⠋⠀ https://jmtd.net
⠈⠳⣄⠀⠀⠀⠀ Please do not CC me, I am subscribed to the list.

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Thread

Formatting a 32G or 16G SD card? conover@rahul.net (John Conover) - 2019-01-03 09:10 +0100
  Re: Formatting a 32G or 16G SD card? Jonathan Dowland <jmtd@debian.org> - 2019-01-03 11:40 +0100
    Re: Formatting a 32G or 16G SD card? Pascal Hambourg <pascal@plouf.fr.eu.org> - 2019-01-03 21:10 +0100
      Re: Formatting a 32G or 16G SD card? Jonathan Dowland <jmtd@debian.org> - 2019-01-04 11:00 +0100
        Re: Formatting a 32G or 16G SD card? Curt <curty@free.fr> - 2019-01-04 14:40 +0100
          Re: Formatting a 32G or 16G SD card? Jonathan Dowland <jmtd@debian.org> - 2019-01-04 17:30 +0100
            Re: Formatting a 32G or 16G SD card? Curt <curty@free.fr> - 2019-01-04 17:40 +0100
              Re: Formatting a 32G or 16G SD card? rhkramer@gmail.com - 2019-01-05 05:00 +0100
            Re: Formatting a 32G or 16G SD card? <tomas@tuxteam.de> - 2019-01-04 17:40 +0100
              Re: Formatting a 32G or 16G SD card? "Thomas Schmitt" <scdbackup@gmx.net> - 2019-01-04 18:50 +0100
            Re: Formatting a 32G or 16G SD card? Pascal Hambourg <pascal@plouf.fr.eu.org> - 2019-01-04 20:10 +0100
              Re: Formatting a 32G or 16G SD card? <tomas@tuxteam.de> - 2019-01-05 10:30 +0100
                Re: Formatting a 32G or 16G SD card? Joe <joe@jretrading.com> - 2019-01-05 10:40 +0100
                Re: Formatting a 32G or 16G SD card? <tomas@tuxteam.de> - 2019-01-05 12:00 +0100
              Re: Formatting a 32G or 16G SD card? Jonathan Dowland <jmtd@debian.org> - 2019-01-07 13:30 +0100
          typos (was: Re: Formatting a 32G or 16G SD card?) rhkramer@gmail.com - 2019-01-05 04:20 +0100
          Re: Formatting a 32G or 16G SD card? rhkramer@gmail.com - 2019-01-05 04:20 +0100
          Re: Formatting a 32G or 16G SD card? rhkramer@gmail.com - 2019-01-05 04:40 +0100
            Re: Formatting a 32G or 16G SD card? Curt <curty@free.fr> - 2019-01-05 10:10 +0100

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