此内容没有您所选择的语言版本。

Chapter 7. Boot Devices

Automated installation (or kickstart) is an essential part of efficient system provisioning. This chapter describes how to prepare different types of boot media for use with kickstarting clients.

For more detailed information on using kickstart for provisioning, see the RHN Satellite Getting Started Guide.

Before beginning, locate the standard Red Hat Enterprise Linux CD boot image boot.iso. You will need to create work directories for different boot images, and populate them with the necessary boot files. Switch to the root user, and enter the following commands:

mkdir -p temp cd/isolinux pxe/pxelinux.cfg usb/extlinux usb/temp
mount -o loop boot.iso temp
cp -aP temp/isolinux/* cd/isolinux/
cp -aP temp/isolinux/* pxe/
cp -aP temp/isolinux/* usb/extlinux/
umount temp
chmod -R u+rw cd pxe usb

mkdir -p temp cd/isolinux pxe/pxelinux.cfg usb/extlinux usb/temp
mount -o loop boot.iso temp
cp -aP temp/isolinux/* cd/isolinux/
cp -aP temp/isolinux/* pxe/
cp -aP temp/isolinux/* usb/extlinux/
umount temp
chmod -R u+rw cd pxe usb

Copy to Clipboard

Toggle word wrap

Procedure 7.1. CD Boot Media

Note

The backslash "\" is used below to represent a continuation of one line at the shell prompt.

Change to the ./cd directory:
```
cd ./cd
```
```
cd ./cd
```
Copy to Clipboard Toggle word wrap
Copy the /usr/lib/syslinux/menu.c32 file to the CD:
```
cp -p /usr/lib/syslinux/menu.c32 isolinux
```
```
cp -p /usr/lib/syslinux/menu.c32 isolinux
```
Copy to Clipboard Toggle word wrap

Open the isolinux/isolinux.cfg file in your preferred text editor, and add the following line:

mkisofs -o ./custom-boot.iso -b isolinux/isolinux.bin -c isolinux/boot.cat -no-emul-boot \
  -boot-load-size 4 -boot-info-table -J -l -r -T -v -V "Custom RHEL Boot" .

mkisofs -o ./custom-boot.iso -b isolinux/isolinux.bin -c isolinux/boot.cat -no-emul-boot \
  -boot-load-size 4 -boot-info-table -J -l -r -T -v -V "Custom RHEL Boot" .

Copy to Clipboard

Toggle word wrap

Customize any boot parameters and targets in isolinux.cfg as needed for CD booting.
Burn the details to the CD to complete the procedure.

Procedure 7.2. PXE Boot

Change to the /pxe directory:
```
cd ./pxe
```
```
cd ./pxe
```
Copy to Clipboard Toggle word wrap
Copy the /usr/lib/syslinux/menu.c32 file to the /pxe directory:
```
cp -p /usr/lib/syslinux/menu.c32 .
```
```
cp -p /usr/lib/syslinux/menu.c32 .
```
Copy to Clipboard Toggle word wrap
Move the isolinux.cfg file to pxelinux.cfg/default:
```
mv isolinux.cfg pxelinux.cfg/default
```
```
mv isolinux.cfg pxelinux.cfg/default
```
Copy to Clipboard Toggle word wrap
Remove the temporary files:
```
rm -f isolinux.bin TRANS.TBL
```
```
rm -f isolinux.bin TRANS.TBL
```
Copy to Clipboard Toggle word wrap
Copy the /usr/lib/syslinux/pxelinux.0 file to the /pxe directory:
```
cp -p /usr/lib/syslinux/pxelinux.0 .
```
```
cp -p /usr/lib/syslinux/pxelinux.0 .
```
Copy to Clipboard Toggle word wrap
Open the pxelinux.cfg/default file in your preferred text editor, and customize any boot parameters and targets as needed for PXE booting.

Procedure 7.3. USB Boot Media

Warning

Be extremely careful when carrying out these command as root (required for most critical parts). These commands access device files and using them incorrectly could irrecoverably damage your system. The example below uses /dev/loop0 for mounting, make sure you use the correct device for your system. You can check which is the correct device using the losetup -f command.

Change to the /usb directory:
```
cd ./usb
```
```
cd ./usb
```
Copy to Clipboard Toggle word wrap
Copy the /usr/lib/syslinux/menu.c32 file to the extlinux/ directory:
```
cp -p /usr/lib/syslinux/menu.c32 extlinux/
```
```
cp -p /usr/lib/syslinux/menu.c32 extlinux/
```
Copy to Clipboard Toggle word wrap
Move the extlinux/isolinux.cfg file to extlinux/extlinux.conf:
```
mv extlinux/isolinux.cfg extlinux/extlinux.conf
```
```
mv extlinux/isolinux.cfg extlinux/extlinux.conf
```
Copy to Clipboard Toggle word wrap

Remove the temporary files:

rm -f extlinux/isolinux.bin extlinux/TRANS.TBL

rm -f extlinux/isolinux.bin extlinux/TRANS.TBL

Copy to Clipboard

Toggle word wrap

Convert the custom-boot.img file and copy it:

dd if=/dev/zero of=./custom-boot.img bs=1024 count=30000

dd if=/dev/zero of=./custom-boot.img bs=1024 count=30000

Copy to Clipboard

Toggle word wrap

Discover the correct mounting location for the loopback device:
```
losetup -f
/dev/loop0
```
```
losetup -f
/dev/loop0
```
Copy to Clipboard Toggle word wrap
Set up the loopback device with the boot image:
```
losetup /dev/loop0 ./custom-boot.img
```
```
losetup /dev/loop0 ./custom-boot.img
```
Copy to Clipboard Toggle word wrap
Open the fdisk utility:
```
fdisk /dev/loop0
```
```
fdisk /dev/loop0
```
Copy to Clipboard Toggle word wrap
Create one primary bootable partition on the device. This can be done by using the following key press combination: n p 1 Enter Enter a 1 p w
Copy the master boot record (MBR) to the loopback device:
```
dd if=/usr/lib/syslinux/mbr.bin of=/dev/loop0
```
```
dd if=/usr/lib/syslinux/mbr.bin of=/dev/loop0
```
Copy to Clipboard Toggle word wrap
Add partition maps to the loopback device:
```
kpartx -av /dev/loop0
```
```
kpartx -av /dev/loop0
```
Copy to Clipboard Toggle word wrap

Create the file system:

mkfs.ext2 -m 0 -L "Custom RHEL Boot" /dev/mapper/loop0p1

mkfs.ext2 -m 0 -L "Custom RHEL Boot" /dev/mapper/loop0p1

Copy to Clipboard

Toggle word wrap

Mount the device:
```
mount /dev/mapper/loop0p1 temp
```
```
mount /dev/mapper/loop0p1 temp
```
Copy to Clipboard Toggle word wrap
Delete temporary files:
```
rm -rf temp/lost+found
```
```
rm -rf temp/lost+found
```
Copy to Clipboard Toggle word wrap
Copy the extlinux/ directory to a temporary location:
```
cp -a extlinux/* temp/
```
```
cp -a extlinux/* temp/
```
Copy to Clipboard Toggle word wrap
Install the bootloader in the temporary location:
```
extlinux temp
```
```
extlinux temp
```
Copy to Clipboard Toggle word wrap
Unmount the temporary location:
```
umount temp
```
```
umount temp
```
Copy to Clipboard Toggle word wrap
Delete the partition maps on the loopback device:
```
kpartx -dv /dev/loop0
```
```
kpartx -dv /dev/loop0
```
Copy to Clipboard Toggle word wrap
Delete the loopback device:
```
losetup -d /dev/loop0
```
```
losetup -d /dev/loop0
```
Copy to Clipboard Toggle word wrap
Synchronize the file system changes:
```
sync
```
```
sync
```
Copy to Clipboard Toggle word wrap
Open the extlinux.conf file in your preferred text editor, and customize any boot parameters and targets as needed for USB booting.
Transfer the image to a USB device to complete the procedure. Insert the device, and run the dmesg command to check the mounting location. In this example, it is /dev/sdb.
Unmount the USB device:
```
umount /dev/sdb
```
```
umount /dev/sdb
```
Copy to Clipboard Toggle word wrap
Copy the image to the USB device:
```
dd if=./custom-boot.img of=/dev/sdb
```
```
dd if=./custom-boot.img of=/dev/sdb
```
Copy to Clipboard Toggle word wrap

此内容没有您所选择的语言版本。

Chapter 7. Boot Devices

学习

尝试、购买和销售

社区

关于红帽文档

让开源更具包容性

關於紅帽

Theme

Red Hat legal and privacy links

Red Hat legal and privacy links