How to avoid ext4 by default when installing?

[narcisgarcia]

This is the related question in Launchpad:
https://answers.launchpad.net/ubuntu/+source/partman-ext3/+question/98607
and it may affect to debian-installer configuration (?)

How can I do to avoid that in the alternate installation partitioner doesn't appear "ext4" filesystem as the default selection in any step?

This could make able to install to an encrypted independent volume, for example, without crashing partman-ext3:
https://bugs.launchpad.net/ubuntu/+source/debian-installer/+bug/503848

[louieb]

manual partitioning - use as - choose whatever file-system you want from a list.

[narcisgarcia]

As you could see in the bug report, when you do this in a manual partitioning method and encrypted volume, partitioner crashes in the moment you enter to the "ext4" value to be changed.

I need to find that value already set to "ext3" to avoid the crash.