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Date:      Thu, 5 Mar 2009 15:12:17 +0100
From:      Matthias Apitz <guru@unixarea.de>
To:        Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: USB key with 7.5 GByte but no space left on device after 4 GByte written
Message-ID:  <20090305141217.GA11424@rebelion.Sisis.de>
In-Reply-To: <alpine.BSF.2.00.0903051048220.74507@wojtek.tensor.gdynia.pl>
References:  <20090305081407.GA2242@rebelion.Sisis.de> <alpine.BSF.2.00.0903050935130.74279@wojtek.tensor.gdynia.pl> <200903050109.27668.chuckop@gmail.com> <20090305093208.GA4342@rebelion.Sisis.de> <alpine.BSF.2.00.0903051048220.74507@wojtek.tensor.gdynia.pl>

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El día Thursday, March 05, 2009 a las 10:48:52AM +0100, Wojciech Puchar escribió:

> >>formatted properly?
> >
> >I did a 'ls -l /dev/da*' after key insert and there was only /dev/da0;
> >maybe I should do
> >
> ># newfs_msdos /dev/da0
> >
> >???
> 
> to be sure do
> 
> dd if=/dev/zero of=/dev/da0 bs=64k count=1
> 
> before to clean anything from beginning, if any mess is there.

to end this threat, I did:

# dd if=/dev/zero of=/dev/da0 bs=64k count=1
# newfs_msdos /dev/da0
# mount -t msdosfs /dev/da0 /mnt
# time cat file file file > /mnt/big
cat: stdout: File too large
0.276u 19.421s 14:36.63 2.2%    11+1180k 33887+65536io 0pf+0w

# df -kh /mnt
Filesystem    Size    Used   Avail Capacity  Mounted on
/dev/da0      7.5G    4.0G    3.5G    53%    /mnt

i.e. it writes the maximal file size of 4G in FAT32 and 3.5G are left as
free;

the write speed is
4294963200 in 14:36.63 minutes, i.e. 4902926 per sec;

	matthias
-- 
Matthias Apitz
Manager Technical Support - OCLC GmbH
Gruenwalder Weg 28g - 82041 Oberhaching - Germany
t +49-89-61308 351 - f +49-89-61308 399 - m +49-170-4527211
e <matthias.apitz@oclc.org> - w http://www.oclc.org/ http://www.UnixArea.de/



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