大家帮帮忙吧，
安装时需要用到如下资料，但我的E文不好，希望高手能帮忙翻译一下，无尽感激。1. Install RedHat RHEL 4 AS to the USB Hard Drive
Boot RHEL4 Installation CD, enter "expert". Partition your USB Hard drive manually. In my case, I created 1GB /dev/sda1 mounted as /boot and /dev/sda5 mounted as / (root), I also have /dev/sda7 SWAP partition.
After installation, boot from the RHEL4 Installation CD again, type "linux rescue", don't let the installer mount the USB hard drive partitions.
2. Mount partitions
mount /dev/sda5 /mnt/source
mount /dev/sda1 /mnt/source/boot
chroot /mnt/source
3. Restore initrd image
cp /boot/initrd-2.6.9-5.EL.img /tmp/initrd.gz
cd /tmp
gunzip initrd.gz
mkdir /tmp/a
cd /tmp/a
cpio -i < /tmp/initrd
(Output: 2078 blocks)
4. Edit init script to load USB drivers
vi /tmp/a/init
#!/bin/nash
mount -t proc /proc /proc
setquiet
echo Mounted /proc filesystem
echo Mounting sysfs
mount -t sysfs none /sys
echo Creating /dev
mount -o mode=0755 -t tmpfs none /dev
mknod /dev/console c 5 1
mknod /dev/null c 1 3
mknod /dev/zero c 1 5
mkdir /dev/pts
mkdir /dev/shm
echo Starting udev
/sbin/udevstart
echo -n "/sbin/hotplug" > /proc/sys/kernel/hotplug
echo "Loading scsi_mod.ko module"
insmod /lib/scsi_mod.ko
echo "Loading sd_mod.ko module"
insmod /lib/sd_mod.ko
echo "Loading libata.ko module"
insmod /lib/libata.ko
echo "Loading ata_piix.ko module"
insmod /lib/ata_piix.ko
echo "Loading jbd.ko module"
insmod /lib/jbd.ko
echo "Loading ext3.ko module"
insmod /lib/ext3.ko
######################################
echo "*** Loading usb-storage ***"
insmod /lib/usb-storage.ko
echo "*** Loading usb-uhci ***"
insmod /lib/ehci-hcd.ko
echo "*** Sleeping 5 seconds ***"
/bin/sleep 5
/sbin/udevstart
echo Creating root device
mkrootdev /dev/root
echo "*** Reread partition table ***"
/sbin/sfdisk -R /dev/sda
umount /sys
echo Mounting root filesystem
mount -o defaults --ro -t ext3 /dev/root /sysroot
mount -t tmpfs --bind /dev /sysroot/dev
echo Switching to new root
switchroot /sysroot
umount /initrd/dev
5. Copy USB drivers
cd /lib/modules/2.6.9-5.EL/kernel/drivers
cp usb/host/ehci-hcd.ko /tmp/a/lib
cp usb/storage/usb-storage.ko /tmp/a/lib
cp scsi/scsi_mod.ko /tmp/a/lib
cp scsi/sd_mod.ko /tmp/a/lib
6. Copy executables and dependent libraries
ldd /bin/sleep
ldd /sbin/sfdisk
cp /lib/tls/libm.so.6 /lib/tls/librt.so.1 /lib/tls/libc.so.6 /lib/tls/libpthread.so.0 /tmp/a/lib/tls
cp /lib/ld-linux.so.2 /tmp/a/lib/
cp /bin/sleep /sbin/sfdisk /tmp/a/bin/
7. Re-Make the init image
cd /tmp/a
find . | cpio -c -o | gzip -9 > /boot/usbinitrd.img
(output: 6077 blocks)
8. Edit grub.conf to boot from the new usbinitrd.img
vi /boot/grub/grub.conf 太长了，短点还可以考虑下。 :evil::twisted::roll: 仅供参考：
1. 安装RedHat RHEL 4 AS到USB硬盘
启动RHEL4安装CD，输入"expert"。手动给USB硬盘分区。我是创建了1GB的/dev/sda1，挂载为/boot；而/dev/sda5挂载为/ (root)，同时进行/dev/sda7 SWAP分区。
安装完后再次从RHEL4 安装CD启动，输入"linux rescue"，不要让安装程序挂载USB硬盘分区。
2。 挂载分区
3。恢复initrd image
4。编辑init 脚本，加载USB驱动
5。拷贝USB驱动
6。拷贝执行文件和依赖库
7。重做init image
8。编辑grub.conf ，从新的usbinitrd.img 启动
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