Dotaz: bootovaci sekvnce

[Maer]

Dobre delam si bootovaci disketu na terminal potreboval bych zjistit bootovaci sekvenci linuxu SUSE 10.1 jadro mam ale nemuzu najit butovaci skvenci ktera by fungovala. Jadro mam VMLINUZ ktere jsem prez prikaz dd if=.... of=.... nakopiroval na disketu ale nemam tam ten boot

Odpovědi

[Petr Šobáň]

A to se tě to jádro vlezlo na disketu ???

Co takhle man mkbootdisk ? A máš disketu hned pro tvoji distribuci

[Maer]

ted to presne nechapu jak to myslis ale jestli mi muzes nejak poskytnout byl bych velice rad kdyztak maer@centrum.cz

[Petr Šobáň]

????

Ono kouknout do toho manuálu je problém ?

Prostě příkaz mkbootdisk udělá disketu pro nabotování vašeho os (suse).

Viz: man mkbootdisk

[Petr Šobáň]

Jinak další info pro dělání botování viz: syslinux

[Maer]

No tak ten prikaz mkbootdisk ten linux nezna :-/ a ani nejakej soft na doplneni neni.

[Petr Šobáň]

A jak jsi to zjistil že to nezná ?

To je dost podezřelé jak si mám potom vytvořit botovací disketu.

Jinak je tady:

#!/bin/bash

# mkbootdisk
#
# Written by Erik Troan <ewt@redhat.com>

pause=yes
unset kernel
device=/dev/fd0
unset verbose
unset kernelargs
unset mountopts
unset isoimage
unset realdev
size=1440
failed=0

MOUNTDIR=`mktemp -d /tmp/mkbootdisk.XXXXXX`
PATH=/sbin:$PATH
export PATH

VERSION=1.5.2

usage () {
    cat >&2 <<EOF
usage: `basename $0` [--version] [--noprompt] [--device <devicefile>] 
       [--verbose -v] [--iso] [--kernelargs <args>] [--size <size>]  <kernel>
       (ex: `basename $0` --device /dev/fd1 2.0.31)
EOF
    exit $1
}

while [ $# -gt 0 ]; do
    case $1 in
	--device)
	    shift
	    device=$1
	    ;;
	--kernelargs)
	    shift
	    kernelargs=$1
	    ;;
	--help)
	    rm -rf $MOUNTDIR
	    usage 0
	    ;;
	--iso)
	    isoimage=1
	    ;;
	--size)
	    shift
	    size=$1
	    ;;
	--noprompt)
	    unset pause
	    ;;
	-v)
	    verbose=true
	    ;;
	--verbose)
	    verbose=true
	    ;;
	--version)
	    echo "mkbootdisk: version $VERSION"
	    rm -rf $MOUNTDIR
	    exit 0
	    ;;
	*)
	    if [ -z "$kernel" ]; then
		kernel=$1
	    else
		rm -rf $MOUNTDIR
		usage
	    fi
	    ;;
    esac

    shift
done

[ -z "$kernel" ] && {
    rm -rf $MOUNTDIR
    usage 1
}

[ "$(uname -i)" == "x86_64" ] && [ -z $isoimage ] && {
    echo "Image for x86_64 architecture does not fit on 1.44MB floppy." >&2
    echo "Use \"--iso --device image.iso\" options to make a CD image." >&2
    exit 1
}

[ -d /lib/modules/$kernel ] || {
    echo "/lib/modules/$kernel is not a directory." >&2
    rm -rf $MOUNTDIR
    exit 1
}

[ -f /boot/vmlinuz-$kernel ] || {
    echo "/boot/vmlinuz-$kernel does not exist." >&2
    rm -rf $MOUNTDIR
    exit 1
}


rootdev=`awk '$1 ~ /^[^#]/ && $2 ~ /^\/$/ { print $1 ; exit }' /etc/fstab`

if [ $(echo $rootdev | cut -c1-6) = "LABEL=" ]; then
    rootlabel=$(echo $rootdev | cut -c7-)

    # whee, now we have to look through every partition looking for
    # the thing called $rootlabel, which could be raid. Ick.

    list=$(tail -n +3 /proc/partitions | awk '{ print $4 '} | grep '^md')
    list="$list $(tail -n +3 /proc/partitions | 
			awk '{ print $4 '} | grep -v '^md')"
    rootdev=""
    for dev in $list; do
	if tune2fs -l /dev/$dev >/dev/null 2>/dev/null; then
	    label=$(tune2fs -l /dev/$dev 2>/dev/null | 
		grep "Filesystem volume name" | awk '{print $4}')
	    if [ "$label" = $rootlabel ]; then
		rootdev=/dev/$dev
		break
	    fi
	fi
    done
fi

if [ -z "$kernelargs" -a -x /sbin/grubby -a -f /boot/grub/grub.conf ]; then
    # sed gross... this grep's for the args= line and removes the args=" and "$
    defkernel=$(grubby --default-kernel)
    if [ -n "$defkernel" ]; then
	kernelargs=$(grubby --info "$defkernel" |
	             sed -n '/^args=/{s/^args="//;s/"$//;p;}')
    fi
fi

[ -z "$rootdev" ] && {
    echo 'Cannot find root partition in /etc/fstab.' >&2
    rm -rf $MOUNTDIR
    exit 1
}

rm -rf $MOUNTDIR
mkdir $MOUNTDIR || {
    echo "Failed to create $MOUNTDIR" >&2
    exit 1
}
[ -d $MOUNTDIR ] || {
    echo "$MOUNTDIR is not a directory!" >&2
    rm -rf $MOUNTDIR
    exit 1
}

if [ -n "$isoimage" ]; then
    cfgfile=$MOUNTDIR/isolinux/isolinux.cfg
    bootmsg=$MOUNTDIR/isolinux/boot.msg

    # create an iso image; the directory is all we need
    [ -n "$verbose" ] && echo -n "Installing isolinux... "
    mkdir $MOUNTDIR/isolinux
    cp /usr/lib/syslinux/isolinux.bin $MOUNTDIR/isolinux
    [ -n "$verbose" ] && echo done
else
    cfgfile=$MOUNTDIR/syslinux.cfg
    bootmsg=$MOUNTDIR/boot.msg

    # we need to create an msdos filesystem for syslinux

    if [ -b "$device" ]; then
	if [ -n "$pause" ]; then
	    echo "Insert a disk in $device. Any information on the disk will be lost."
	    echo -n "Press <Enter> to continue or ^C to abort: "
	    read aline
	fi

	# this is copying some bits from below.  oh well
	realdev=$device
	device=`/bin/mktemp /tmp/mkbootdisk.XXXXXX`
	dd if=/dev/zero of=$device bs=1024 count=$size 2> /dev/null
	mountopts=loop
    elif [ -f "$device" ]; then
	echo "$device exists but is not a block device."
	rmdir $MOUNTDIR
	exit 1
    else 
	dd if=/dev/zero of=$device bs=1024 count=$size 2> /dev/null
	mountopts=loop
    fi

    [ -n "$verbose" ] && echo -n "Formatting $device... "
    mkdosfs -r 16 -I $device > /dev/null || {
	echo "Failed to format $device" >&2
	rmdir $MOUNTDIR
	[ -n "$realdev" ] && rm -f "$device"
	exit 1
    }
    
    syslinux $device
    [ -n "$verbose" ] && echo "done."

    mount -o "$mountopts" -t vfat $device $MOUNTDIR || {
	rmdir $MOUNTDIR
	[ -n "$realdev" ] && rm -f "$device"
	exit 1
    }
fi


if [ -n "$isoimage" ]; then
    BOOTDESTDIR=$MOUNTDIR/isolinux
else
    BOOTDESTDIR=$MOUNTDIR
fi

[ -n "$verbose" ] && echo -n "Copying /boot/vmlinuz-$kernel... "
cp -p /boot/vmlinuz-$kernel $BOOTDESTDIR/vmlinuz
[ $? = 0 ] || failed=1
[ -n "$verbose" ] && echo "done."

[ -n "$verbose" ] && echo -n "Copying /boot/initrd-$kernel.img... "
if [ -f /boot/initrd-$kernel.img ]; then
  cp -p /boot/initrd-$kernel.img $BOOTDESTDIR/initrd.img
fi
[ $? = 0 ] || failed=1
[ -n "$verbose" ] && echo "done."

[ -n "$verbose" ] && echo -n "Configuring bootloader... "

[ -f $BOOTDESTDIR/initrd.img ] && INITRDARG="initrd=initrd.img"

if [ $(echo $rootdev | cut -b 6-9) = "loop" ]; then
    rootdev=$(ls -l $rootdev | sed 's/,//' | awk '{ printf("%02x%02x\n", $5, $6); }')
fi

cat > $cfgfile <<EOF
default linux
prompt 1
display boot.msg
timeout 100
label linux
	kernel vmlinuz
	append $INITRDARG $kernelargs root=$rootdev
EOF

[ $? = 0 ] || failed=1

chmod 644 $cfgfile

if [ -f /etc/redhat-release ]; then
    title="$(sed 's/ release.*$//' < /etc/redhat-release)"
else
    title="Red Hat Linux"
fi


cat >> $bootmsg <<EOF

Press <return> (or wait 10 seconds) to boot your $title system from
$rootdev. You may override the default linux kernel parameters by typing
"linux <params>", followed by <return> if you like.

EOF

[ $? = 0 ] || failed=1

[ -n "$verbose" ] && echo "done."

if [ -n "$isoimage" ]; then
    mkisofs \
	-A "Red Hat Linux Boot CD" \
	-V "Red Hat Linux Boot CD" \
	-J -R -T -quiet \
	-o $device \
	-b isolinux/isolinux.bin -c isolinux/boot.cat -no-emul-boot \
	   -boot-load-size 4 -boot-info-table $MOUNTDIR
    rm -rf $MOUNTDIR
else
    umount $MOUNTDIR
    rmdir $MOUNTDIR
fi

if [ -n "$realdev" ] && [ $failed -eq 0 ]; then
    dd if="$device" of="$realdev" bs=72k 
    rm -f "$device"
fi

if [ $failed -eq 1 ]; then
  exit 1
else
  exit 0
fi

Takže je tady možná to pomůže jak se dělá botovací disketa v FC5

[Maer]

diky ti za ten script ci co to je ale zas takovej profik nejsem jsem zacatecnik. ale pokusim se to nejak pochopit a uchodit

[Petr Šobáň]

Grrrrr vloudila se mi tam chybička jak jsem nahrazoval < a > za &lt; a &gt;

Tak jsem se seknul a místo &gt; jsem zadal &qt; takže si potom v edotoru přepiš všechny výskyty &qt; za >.

[Robert Krátký]

Opraveno.