Converting ext3 to ext4 resulting in loss of data?

[ms]

On 10/08/10 13:40, Fajar Priyanto wrote:
> Hi guys,
> I do a fresh install of Lucid on my Karmic. Preserving /home
> partition, but converting it from ext3 to ext4.
> After the installation all of the data in /home is gone.
> I thought converting ext3 to ext4 won't result in such case?
> Thank you.
>

Sorry if it sounds silly but... didn't you tell the installer to 
*reformat* the partition, did you?