Re: Formatting a 32G or 16G SD card?
- Date: Thu, 3 Jan 2019 10:35:23 +0000
- From: Jonathan Dowland <jmtd@xxxxxxxxxx>
- Subject: Re: Formatting a 32G or 16G SD card?
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
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
⠈⠳⣄⠀⠀⠀⠀ Please do not CC me, I am subscribed to the list.