ext4 able to boot from ext3 mbr?

[Timothy Murphy]

stan wrote:

> When I installed F9 from the liveCD I decided to use the
> EXT4 file system.  Unfortunately, there was no way to boot
> from my ext3 mbr. 

Slightly OT, but I didn't see any mention of ext4
when I installed F10 (actually F9.92) from the KDE Live CD.
When I formatted a partition (I used Custom Install)
I was offered ext3 or ext2, IIRC, but not ext4.

Less OT, can't one have ext3 /boot with ext3 MBR?