Live CD 的问题，看着网上的教程，苦苦支撑到最后一步了，根文件目录挂载失败

[iorikingdom]

BusyBox能够进去
但是中间出现

Gave up Waiting for root device.

-Missing modules （cat /proc/modules; ls /dev)
ALERT Does not exist，Dropping to a shell

最后
这个根文件究竟怎么设？
我在GRUB那边设root=/dev/ram0也不行，不设也不行，我想把它挂载到U盘上面
是在太菜了，找不到方法
这个是我Initrd的init文件，基本上没修过

#!/bin/sh

echo "Loading, please wait..."

[ -d /dev ] || mkdir -m 0755 /dev
[ -d /root ] || mkdir -m 0700 /root
[ -d /sys ] || mkdir /sys
[ -d /proc ] || mkdir /proc
[ -d /tmp ] || mkdir /tmp
mkdir -p /var/lock
mount -t sysfs -o nodev,noexec,nosuid none /sys
mount -t proc -o nodev,noexec,nosuid none /proc

# Note that this only becomes /dev on the real filesystem if udev's scripts
# are used; which they will be, but it's worth pointing out
mount -t tmpfs -o mode=0755 udev /dev
[ -e /dev/console ] || mknod -m 0600 /dev/console c 5 1
[ -e /dev/null ] || mknod /dev/null c 1 3
> /dev/.initramfs-tools
mkdir /dev/.initramfs

# Export the dpkg architecture
export DPKG_ARCH=
. /conf/arch.conf

# Set modprobe env
export MODPROBE_OPTIONS="-qb"

# Export relevant variables
export ROOT=
export ROOTDELAY=
export ROOTFLAGS=
export ROOTFSTYPE=
export break=
export init=/sbin/init
export quiet=n
export readonly=y
export rootmnt=/root
export debug=
export panic=
export blacklist=
export resume_offset=

# Bring in the main config
. /conf/initramfs.conf
for conf in conf/conf.d/*; do
[ -f ${conf} ] && . ${conf}
done
. /scripts/functions

# Parse command line options
for x in $(cat /proc/cmdline); do
case $x in
init=*)
init=${x#init=}
;;
root=*)
ROOT=${x#root=}
case $ROOT in
LABEL=*)
ROOT="${ROOT#LABEL=}"

# support / in LABEL= paths (escape to \x2f)
case "${ROOT}" in
*[/]*)
if [ -x "$(command -v sed)" ]; then
ROOT="$(echo ${ROOT} | sed 's,/,\\x2f,g')"
else
if [ "${ROOT}" != "${ROOT#/}" ]; then
ROOT="\x2f${ROOT#/}"
fi
if [ "${ROOT}" != "${ROOT%/}" ]; then
ROOT="${ROOT%/}\x2f"
fi
IFS='/'
newroot=
for s in $ROOT; do
if [ -z "${newroot}" ]; then
newroot="${s}"
else
newroot="${newroot}\\x2f${s}"
fi
done
unset IFS
ROOT="${newroot}"
fi
esac
ROOT="/dev/disk/by-label/${ROOT}"
;;
UUID=*)
ROOT="/dev/disk/by-uuid/${ROOT#UUID=}"
;;
/dev/nfs)
[ -z "${BOOT}" ] && BOOT=nfs
;;
esac
;;
rootflags=*)
ROOTFLAGS="-o ${x#rootflags=}"
;;
rootfstype=*)
ROOTFSTYPE="${x#rootfstype=}"
;;
rootdelay=*)
ROOTDELAY="${x#rootdelay=}"
case ${ROOTDELAY} in
*[![:digit:].]*)
ROOTDELAY=
;;
esac
;;
resumedelay=*)
RESUMEDELAY="${x#resumedelay=}"
;;
loop=*)
LOOP="${x#loop=}"
;;
loopflags=*)
LOOPFLAGS="-o ${x#loopflags=}"
;;
loopfstype=*)
LOOPFSTYPE="${x#loopfstype=}"
;;
cryptopts=*)
cryptopts="${x#cryptopts=}"
;;
nfsroot=*)
NFSROOT="${x#nfsroot=}"
;;
netboot=*)
NETBOOT="${x#netboot=}"
;;
ip=*)
IPOPTS="${x#ip=}"
;;
boot=*)
BOOT=${x#boot=}
;;
resume=*)
RESUME="${x#resume=}"
;;
resume_offset=*)
resume_offset="${x#resume_offset=}"
;;
noresume)
noresume=y
;;
panic=*)
panic="${x#panic=}"
case ${panic} in
*[![:digit:].]*)
panic=
;;
esac
;;
quiet)
quiet=y
;;
ro)
readonly=y
;;
rw)
readonly=n
;;
debug)
debug=y
quiet=n
exec >/dev/.initramfs/initramfs.debug 2>&1
set -x
;;
debug=*)
debug=y
quiet=n
set -x
;;
break=*)
break=${x#break=}
;;
break)
break=premount
;;
blacklist=*)
blacklist=${x#blacklist=}
;;
esac
done

if [ -z "${noresume}" ]; then
export resume=${RESUME}
else
export noresume
fi

depmod -a
maybe_break top

# export BOOT variable value for compcache,
# so we know if we run from casper
export BOOT

# Don't do log messages here to avoid confusing usplash
run_scripts /scripts/init-top

maybe_break modules
log_begin_msg "Loading essential drivers..."
load_modules
log_end_msg

maybe_break premount
[ "$quiet" != "y" ] && log_begin_msg "Running /scripts/init-premount"
run_scripts /scripts/init-premount
[ "$quiet" != "y" ] && log_end_msg

maybe_break mount
log_begin_msg "Mounting root file system..."
echo "BOOT=" ${BOOT}
. /scripts/${BOOT}
parse_numeric ${ROOT}
mountroot
log_end_msg

maybe_break bottom
[ "$quiet" != "y" ] && log_begin_msg "Running /scripts/init-bottom"
run_scripts /scripts/init-bottom
[ "$quiet" != "y" ] && log_end_msg

# Move virtual filesystems over to the real filesystem
mount -n -o move /sys ${rootmnt}/sys
mount -n -o move /proc ${rootmnt}/proc

# Check init bootarg
if [ -n "${init}" ] && [ ! -x "${rootmnt}${init}" ]; then
echo "Target filesystem doesn't have ${init}."
init=
fi

# Search for valid init
if [ -z "${init}" ] ; then
for init in /sbin/init /etc/init /bin/init /bin/sh; do
if [ ! -x "${rootmnt}${init}" ]; then
continue
fi
break
done
fi

# No init on rootmount
if [ ! -x "${rootmnt}${init}" ]; then
panic "No init found. Try passing init= bootarg."
fi

# Confuses /etc/init.d/rc
if [ -n ${debug} ]; then
unset debug
fi

# Chain to real filesystem
maybe_break init
exec run-init ${rootmnt} ${init} "$@" <${rootmnt}/dev/console >${rootmnt}/dev/console 2>&1
panic "Could not execute run-init."

[yhf365]

楼主要干什么？没看明白啊。
用LiveCD可以很方便的启动啊，
会自动挂载Windows分区。
根分区是个虚拟的，打开文件管理器可以看到的。
不在硬盘中。可能在ram中

[iorikingdom]

不是啊，我自己编译kernel+initrd+grub，然后做ISO自己做的

[yhf365]

[Quote=引用 2 楼 iorikingdom 的回复:]
不是啊，我自己编译kernel+initrd+grub，然后做ISO自己做的
[/Quote]
自己做LiveCD?
没搞过，
貌似Ubuntu9.04中自带一个工具，可以做启动盘，
不知道能不能做LiveCD。

[ShowMan]

楼主牛人，这个做成功，鼓励！！

好像差不多成功了，这个错误是因为在rootfs中找不到init执行文件，check 你的busy和根文件系统，看这些东西是否完好。

[Arnold9009]

没弄过liveCD
不过感觉liveCD应该是通过启动文件先在内存中创建一个虚拟磁盘，然后格式化这个虚拟磁盘成需要的文件系统，然后再把光盘中的系统文件copy到这个虚拟磁盘上，然后再
引导已经copy到虚拟磁盘上的系统内核运行

[iorikingdom]

busyBox怎么mount光驱？
我看网上的教程，他们cat /proc/scsi/scsi了以后，上面如果写的是CDROM，就mount
mount -t iso9660 /pro/scsi/scsi /mnt/rom
我安装这套路子走但是没有成功
显示cannot setup loop device。。。迷茫了

[iorikingdom]

召唤猩猩~~~