ext4 able to boot from ext3 mbr?

[Chuck Anderson]

On Tue, Oct 28, 2008 at 02:25:25PM -0700, stan wrote:
> cornel panceac wrote:
>>
>>
>>
>> btw, what's an ext3 mbr?
>>
> An mbr on an ext3 formatted disk, created with a grub from that ext3 
> formatted disk.  Perhaps not the best way to describe it. :-)

Disks are not usually formatted with filesystems such as ext3.  
Partitions are.

MBR lives outside any partition, being the first sector of the disk 
where the primary partition table lives.

So the statement "ext3 mbr" makes no sense.