ext4 able to boot from ext3 mbr?

[Timothy Murphy]

Eric Sandeen wrote:

> 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.

> It takes a special boot-time parameter, put "ext4" on the anaconda boot
> line and you'll see the option in the custom partitioning screen.

Does the Live CD give one an opportunity to add options?
I didn't see an anaconda boot line after I clicked on 
the "Install on hard disk" icon.