how to change password on encrypted LVM installed using alt install cd?

[NathanScrivener]

Hi

I installed Ubuntu 9.04 using the alternate install CD so I could encrypt the hard drive.

I am wondering how I can change the password on this, so that I can use a password that may be less susceptible to brute force attack?

Thanks

[HermanAB]

Yes, LUKS passwords can be changed quite easily. You first add a new password, then delete the old one.

Here are some examples:
http://aeronetworks.ca/luks-usb-howto.html