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ext4在2.6.28中正式启用，fstab的ext4dev也可以改为ext4了，但直接启动会提示ext4-fs not marks…..之类的错误。
这样就需要更改gurb或grub4dos的配置文件，添加rootfstype=ext4。
如：
kernel /boot/vmlinuz-2.6.28 root=UUID=xxxxx rootfstype=ext4 ro splash

这样就行可以解决了。

超前a

现在我还在ext3

置顶以便参考...

楼主确定了没有，
我现在也只是把挂载／的EXT3分区挂载成EXT4，
还不敢用tune2fs -O extents /dev／sdax
tune2fs -I 256 /dev/sdax
调整成真正的EXT4，GRUB启动不了,出现
Starting up......
Loading please wait........
19+0 records in
19+0 records out
kinit:name-to.dev_t(/dev/disk/by-uuid/975e5cc-9c77-4c60-ba5d-e9f77fa9ecf2)=dev(8.6)
kinit:tryinh to resume from /dev/disk.by-uuid/935e57cc-9c77-4c60-ba5d-e9f77fa9e-cf2
kinit No resum image,doing normdl boot.......
mount:mounting/root/dev on/dev/static/dev faild: No such file or directory
mount:mounting/sys on/root/sys faild: No such file or directory
mount:mounting/proc on/root/proc faild: No such file or directory
Target file system doesn't have/sbin/init
NO init found,Try passing init=bootary
BusyBox u1.10.2(ubuntu1:1.10.2-1ubuntu 6)
built-in shell(ash)
Enter 'help' for a list of build-in-commands
(initramfs).....

苹果虫 写了：楼主确定了没有，
我现在也只是把挂载／的EXT3分区挂载成EXT4，
还不敢用tune2fs -O extents /dev／sdax
tune2fs -I 256 /dev/sdax
调整成真正的EXT4，GRUB启动不了,出现
Starting up......
Loading please wait........
19+0 records in
19+0 records out
kinit:name-to.dev_t(/dev/disk/by-uuid/975e5cc-9c77-4c60-ba5d-e9f77fa9ecf2)=dev(8.6)
kinit:tryinh to resume from /dev/disk.by-uuid/935e57cc-9c77-4c60-ba5d-e9f77fa9e-cf2
kinit No resum image,doing normdl boot.......
mount:mounting/root/dev on/dev/static/dev faild: No such file or directory
mount:mounting/sys on/root/sys faild: No such file or directory
mount:mounting/proc on/root/proc faild: No such file or directory
Target file system doesn't have/sbin/init
NO init found,Try passing init=bootary
BusyBox u1.10.2(ubuntu1:1.10.2-1ubuntu 6)
built-in shell(ash)
Enter 'help' for a list of build-in-commands
(initramfs).....

就是这个错，改配置文件就行了。编译完内核，记得先改下配置文件，再重启，就没这类错误了。
grub4dos如果之前没改而出错了，按e添加那行，再b启动，也可。

OK了，感谢楼主

在ubuntu下面如何编译？

参考～

再等些时候再试试…………

重做initrd,挂载根分区前加载ext4dev模块也可以

lz升级后效果怎么样 ？

速度提升多少？



》》GEM显存管理器：以廉价的Intel 915芯片组为例，在GEM的帮助下它的速度提升了50%。

对笔记本来说，是不是节能了？

感谢，现mark

超前！

楼主确定了没有，
我现在也只是把挂载／的EXT3分区挂载成EXT4，
还不敢用tune2fs -O extents /dev／sdax
tune2fs -I 256 /dev/sdax
调整成真正的EXT4，GRUB启动不了,出现
Starting up......
Loading please wait........
19+0 records in
19+0 records out
kinit:name-to.dev_t(/dev/disk/by-uuid/975e5cc-9c77-4c60-ba5d-e9f77fa9ecf2)=dev(8.6)
kinit:tryinh to resume from /dev/disk.by-uuid/935e57cc-9c77-4c60-ba5d-e9f77fa9e-cf2
kinit No resum image,doing normdl boot.......
mount:mounting/root/dev on/dev/static/dev faild: www.gzrencai.comNo such file or directory
mount:mounting/sys on/root/sys faild: No such file or directory
mount:mounting/proc on/root/proc faild: No such file or directory
Target file system doesn't have/sbin/init
NO init found,Try passing init=bootary
BusyBox u1.10.2(ubuntu1:1.10.2-1ubuntu 6)
built-in shell(ash)
Enter 'help' for a list of build-in-commands
(initramfs).....

还没有使用ext4