On Thu, Apr 5, 2012 at 2:50 PM, Canek Peláez Valdés <caneko@...> wrote:
> On Thu, Apr 5, 2012 at 1:32 PM, Joost Roeleveld <joost@...> wrote:
>> On Thursday, April 05, 2012 01:10:46 PM Canek Peláez Valdés wrote:
>>> On Thu, Apr 5, 2012 at 2:47 AM, 张春江 <zhangchunjiangrj@...> wrote:
>>> 2. GRUB cannot read ext4 partitions (GRUB2 can), so you are reading
>>> them as ext3 (I don't know if this can cause any problems). The reason
>>> I started to use GRUB2 was because I wanted to use ext4 for my /.
>> I don't think ext4 and ext3 use the same disk layout, eg. I don't think that
>> can work.
> ext4 is fully backwards compatible with ext3, obviously; otherwise 张春江
> would not be able to boot his system.
Not exactly. If you use them, ext4 adds structures and features which
means the filesystem isn't liked by ext3-only code. I don't remember
which these are, I just know I tended to accidentally enable them
while tweaking filesystems with tune2fs.
Just noting this for clarity.