How safe is encrypted disks? (data integrity)

[Wojciech Puchar]

>
>> I have been thinking to make /home on my laptop encrypted - seems like a
>> good idea if it gets stolen. Now, how safe is this? Not in terms of the
>> strength of the encryption algorithm, but in terms of integrity.
>
> I have no insight on the code, but as nobody else answered,
> my response may be better than nothing.

as safe as unencrypted unless you won't forget password.

if just perform encryption before writing sector, and decryption after 
reading - so it's as safe as underlaying hardware.

while i'm using gbde not geli, it's true too IMHO.

> I experienced several system crashes and one or two power failures
> do to empty battery but I didn't lose any data already saved
> on the disk (that I know of).

exactly will behave as crash on unencrypted partition.