Mounting ext4 from an ext3 system

[Rashkae]

rikona wrote:
> I'd like to run Ubuntu with dual boot to an existing Mandriva 2008
> using ext3. Each will be on its own HD. Ubuntu apparently wants to
> format with ext4. Google info seems to indicate that, under certain
> conditions, ext4 can't be used with, or even seen by, an ext3 system.
> Will I be able to mount an ext4 partition from a running Mandrive/ext3
> and do reads/writes to the ext4 with no problem?


According to distrowatch, EXT4 support was not added to Mandriva until 
the 2009.1 version.  If you want 2008 Mandriva to read/write to your 
Ubuntu Hard drive, format that drive as Ext3 rather than ext4.