mkinitramfs 2.6.36.2 -o /boot/initrd.img-2.6.36.2
如果不进行这一步可能不能成功引导kernel,原因是:在grub引导kernel的时候无法识别kernel所在的位置,即没有驱动程序来加载硬盘的分区,而initrd恰好是干这件事的。ls /boot/
abi-2.6.32-21-generic config-2.6.36.2 memtest86+.bin vmcoreinfo-2.6.32-25-genericabi-2.6.32-25-generic grub System.map-2.6.32-21-generic vmcoreinfo-2.6.32-27-generic
abi-2.6.32-27-generic initrd.img-2.6.32-21-generic System.map-2.6.32-25-generic vmlinuz-2.6.32-21-generic
config-2.6.32-21-generic initrd.img-2.6.32-25-generic System.map-2.6.32-27-generic vmlinuz-2.6.32-25-generic
config-2.6.32-25-generic initrd.img-2.6.32-27-generic System.map-2.6.36.2 vmlinuz-2.6.32-27-generic
config-2.6.32-27-generic initrd.img-2.6.36.2 vmcoreinfo-2.6.32-21-generic vmlinuz-2.6.36.2
update-grub #更新grub,让我们的kernel能被grub识别并添加到启动菜单中去
Generating grub.cfg ...Found linux image: /boot/vmlinuz-2.6.36.2
Found initrd image: /boot/initrd.img-2.6.36.2
Found linux image: /boot/vmlinuz-2.6.32-27-generic
Found initrd image: /boot/initrd.img-2.6.32-27-generic
Found linux image: /boot/vmlinuz-2.6.32-25-generic
Found initrd image: /boot/initrd.img-2.6.32-25-generic
Found linux image: /boot/vmlinuz-2.6.32-21-generic
Found initrd image: /boot/initrd.img-2.6.32-21-generic
Found memtest86+ image: /boot/memtest86+.bin
done
执行上面的命令后,可以在中发现我们的新kernel被添加进去了,见下面的vi部分输出,自动为我们添加了两项哦
vi /boot/grub/grub.cfg
### BEGIN /etc/grub.d/10_linux ### menuentry 'Ubuntu,Linux 2.6.36.2' --class ubuntu --class gnu-linux --class gnu --class os {recordfail
insmod ext2
set root='(hd0,1)'
search --no-floppy --fs-uuid --set 62a097ef-4767-4b5e-8494-ef5fa3298037
linux /boot/vmlinuz-2.6.36.2 root=UUID=62a097ef-4767-4b5e-8494-ef5fa3298037 ro quiet splash
initrd /boot/initrd.img-2.6.36.2
}
menuentry 'Ubuntu,Linux 2.6.36.2 (恢复模式)' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod ext2
set root='(hd0,1)'
search --no-floppy --fs-uuid --set 62a097ef-4767-4b5e-8494-ef5fa3298037
echo '载入 Linux ...'
linux /boot/vmlinuz-2.6.36.2 root=UUID=62a097ef-4767-4b5e-8494-ef5fa3298037 rosingle
echo '载入引导虚拟磁盘 ...'
initrd /boot/initrd.img-2.6.36.2
}
menuentry 'Ubuntu,Linux 2.6.32-27-generic' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod ext2
set root='(hd0,1)'
search --no-floppy --fs-uuid --set 62a097ef-4767-4b5e-8494-ef5fa3298037
linux /boot/vmlinuz-2.6.32-27-generic root=UUID=62a097ef-4767-4b5e-8494-ef5fa3298037 ro quiet splash
initrd /boot/initrd.img-2.6.32-27-generic
}
E: 重启验证
为了以防万一,在重启验证前我们修改一个地方,显示启动菜单,默认可能不会显示的: