USB stick for msdosfs

[Clay Daniels Jr.]

Good info there. Just remember that the "\" backslash character is an
escape character.

*fat16*		    A partition	that contains a	FAT16 filesystem.  The
			    scheme-specific type is "!6" for MBR.
*fat32*		    A partition	that contains a	FAT32 filesystem.  The
			    scheme-specific type is "!11" for MBR.
*fat32lba*            A partition	that contains a	FAT32 (LBA) filesys-
			    tem.  The scheme-specific type is "!12" for	MBR.


On Sat, Aug 10, 2019 at 3:59 AM MJ <mafsys1234 at gmail.com> wrote:

> Hi,
> The -t sets you partition type, the \!12 is the value. This, according
> to gpart manual says it's a Fat32 LBA (whatever use that is). I think
> it's a partition type used by Windows 95/98.
>
> The gpart man also lists a "plain" Fat32 with a type of !11, so try that
> instead then newfs_msdos -F32
>
> Why it's unwilling to format it? Perhaps it doesn't understand LBA
> (Logical Block Addressing)? Frankly, LBA is useless for a tiny 1GB disk,
> just use Fat32 (or even Fat16 given you've only got 1GB disk)
>
>
> On 10/08/2019 6:31 pm, Matthias Apitz wrote:
> >
> > Hello,
> >
> > I have a 1G (1 "marketing GB") USB stick and use normaly this procedure
> > which I have stored in y small set of how-to docs:
> >
> >
> >   # gpart destroy -F da0
> >   # gpart create -s mbr da0
> >   # gpart add -t \!12 da0
> >   # newfs_msdos -F32 /dev/da0s1
> >
> > What does the '-t \!12' mean? And why in the case here newfs_msdos(8)
> > is unwilling to format the partition:
> >
> > # gpart destroy -F da0
> > da0 destroyed
> > # gpart create -s mbr da0
> > da0 created
> > # gpart add -t \!12 da0
> > da0s1 added
> > # newfs_msdos -F32 /dev/da0s1
> > newfs_msdos: 61408 clusters too few clusters for FAT32, need 65525
> > # gpart list da0
> > Geom name: da0
> > modified: false
> > state: OK
> > fwheads: 64
> > fwsectors: 32
> > last: 1966079
> > first: 32
> > entries: 4
> > scheme: MBR
> > Providers:
> > 1. Name: da0s1
> >     Mediasize: 1006616576 (960M)
> >     Sectorsize: 512
> >     Stripesize: 0
> >     Stripeoffset: 16384
> >     Mode: r0w0e0
> >     efimedia: HD(1,MBR,00000000,0x20,0x1dffe0)
> >     rawtype: 12
> >     length: 1006616576
> >     offset: 16384
> >     type: fat32lba
> >     index: 1
> >     end: 1966079
> >     start: 32
> > Consumers:
> > 1. Name: da0
> >     Mediasize: 1006632960 (960M)
> >     Sectorsize: 512
> >     Mode: r0w0e0
> >
> > It works with -F16:
> >
> > # newfs_msdos  -F16 /dev/da0s1
> > /dev/da0s1: 1965504 sectors in 61422 FAT16 clusters (16384 bytes/cluster)
> > BytesPerSec=512 SecPerClust=32 ResSectors=1 FATs=2 RootDirEnts=512
> Media=0xf0 FATsecs=240 SecPerTrack=32 Heads=64 HiddenSecs=0
> HugeSectors=1966048
> >
> > Why not with -F32? Thanks
> >
> >       matthias
> >
> >
> >
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