Take the 2-minute tour ×
Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free, no registration required.

I am using a script from http://www.angstrom-distribution.org/demo/beagleboard/ that uses mkfs.vfat and mkfs.e2fs to create 2 partitions on a sd card but I get

mkfs.vfat 3.0.12 (29 Oct 2011)
mkfs.vfat: unable to open /dev/sdg1: Device or resource busy

Edit: there's a problem with this script. As a workaround I used http://code.google.com/p/beagleboard/wiki/LinuxBootDiskFormat

The script is the following

#! /bin/sh
# mkcard.sh v0.5
# (c) Copyright 2009 Graeme Gregory <dp@xora.org.uk>
# Licensed under terms of GPLv2
#
# Parts of the procudure base on the work of Denys Dmytriyenko
# http://wiki.omap.com/index.php/MMC_Boot_Format

export LC_ALL=C

if [ $# -ne 1 ]; then
    echo "Usage: $0 <drive>"
    exit 1;
fi

DRIVE=$1

dd if=/dev/zero of=$DRIVE bs=1024 count=1024

SIZE=`fdisk -l $DRIVE | grep Disk | grep bytes | awk '{print $5}'`

echo DISK SIZE - $SIZE bytes

CYLINDERS=`echo $SIZE/255/63/512 | bc`

echo CYLINDERS - $CYLINDERS

{
echo ,9,0x0C,*
echo ,,,-
} | sfdisk -D -H 255 -S 63 -C $CYLINDERS $DRIVE

sleep 1


if [ -x `which kpartx` ]; then
    kpartx -a ${DRIVE}
fi

# handle various device names.
# note something like fdisk -l /dev/loop0 | egrep -E '^/dev' |  cut -d' ' -f1 
# won't work due to https://bugzilla.redhat.com/show_bug.cgi?id=649572

PARTITION1=${DRIVE}1
if [ ! -b ${PARTITION1} ]; then
    PARTITION1=${DRIVE}p1
fi

DRIVE_NAME=`basename $DRIVE`
DEV_DIR=`dirname $DRIVE`

if [ ! -b ${PARTITION1} ]; then
    PARTITION1=$DEV_DIR/mapper/${DRIVE_NAME}p1
fi

PARTITION2=${DRIVE}2
if [ ! -b ${PARTITION2} ]; then
    PARTITION2=${DRIVE}p2
fi
if [ ! -b ${PARTITION2} ]; then
    PARTITION2=$DEV_DIR/mapper/${DRIVE_NAME}p2
fi


# now make partitions.
if [ -b ${PARTITION1} ]; then
    umount ${PARTITION1}
    mkfs.vfat -F 32 -n "boot" ${PARTITION1}
else
    echo "Cant find boot partition in /dev"
fi

if [ -b ${PARITION2} ]; then
umount ${PARTITION2}
mke2fs -j -L "Angstrom" ${PARTITION2} 
else
echo "Cant find rootfs partition in /dev"
fi

full output is:

1024+0 records in
1024+0 records out
1048576 bytes (1.0 MB) copied, 0.356157 s, 2.9 MB/s
Disk /dev/sdg doesn't contain a valid partition table
DISK SIZE - 7948206080 bytes
CYLINDERS - 966
Checking that no-one is using this disk right now ...
OK

Disk /dev/sdg: 966 cylinders, 255 heads, 63 sectors/track

sfdisk: ERROR: sector 0 does not have an msdos signature
/dev/sdg: unrecognized partition table type
Old situation:
No partitions found
New situation:
Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0

Device Boot Start     End   #cyls    #blocks   Id  System
/dev/sdg1   *      0+      8       9-     72261    c  W95 FAT32 (LBA)
/dev/sdg2          9     965     957    7687102+  83  Linux
/dev/sdg3          0       -       0          0    0  Empty
/dev/sdg4          0       -       0          0    0  Empty
Successfully wrote the new partition table

Re-reading the partition table ...

If you created or changed a DOS partition, /dev/foo7, say, then use dd(1)
to zero the first 512 bytes:  dd if=/dev/zero of=/dev/foo7 bs=512 count=1
(See fdisk(8).)
umount: /dev/sdg1: not mounted
mkfs.vfat 3.0.12 (29 Oct 2011)
mkfs.vfat: unable to open /dev/sdg1: Device or resource busy
umount: /dev/sdg2: not mounted
mke2fs 1.42 (29-Nov-2011)
/dev/sdg2 is apparently in use by the system; will not make a   filesystem here!

I've tried

sudo fuser -v /dev/sdg
sudo fuser -v /dev/sdg1
sudo fuser -v /dev/sdg2

but with no results. Thanks

share|improve this question
    
What does mount | grep sdg say? –  jippie Apr 23 '12 at 20:47
    
It says nothing. No output. –  fbrundu Apr 23 '12 at 20:56
    
Does the device show up in ls -l /media ? –  jippie Apr 23 '12 at 21:02
    
No it doesn't mount, maybe because the partition table is corrupted or mkfs didn't end successfully –  fbrundu Apr 23 '12 at 21:08

2 Answers 2

Check that your LVM is not stealing the devices:

sudo dmsetup ls

If you see your devices there, simply remove them:

sudo dmsetup remove sdgX
share|improve this answer
    
I am sorry I am unable to test it; however I'll give an up vote to these answers, and accept this later. Thanks –  fbrundu Jul 16 '12 at 13:17

Pekka Nikander's answer did the trick for me.

The only issue is that you can't just "dmsetup remove sdgX". When the mkcard script repartitions, the LVM grabs them again. So, I ran the script once, and then reran it again after unstealing the devices and commenting out the partitioning sections in the script.

EDIT: I believe the part he commented out in mkcard.txt is the following lines:

if [ -x `which kpartx` ]; then
       kpartx -a ${DRIVE}
fi
share|improve this answer
    
Please comment or edit pekka's answer so I can accept it. –  fbrundu Jul 16 '12 at 13:17
    
Would love to, but I can't. There's no button to allow me to do so. –  user77294 Jul 24 '12 at 6:19

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.