How do you use dd for copying smaller hard drive to larger hard drive?

[Jüš† ä gü¥]

I know this is probably a very stupid question, but how do you use the UNIX/Linux dd command to copy the entire contents of one hard drive to another? The second hard drive is larger than the first, but I don't know how you specify when to stop or whatever. Really, ideally, I would just like the exact command-line which will copy the entirety of hard drive 1 to hard drive 2?

Assume /dev/hd0 and /dev/hd1 are the hard drives.

I mean, is it as simple as

dd if=/dev/hd0 of=/dev/hd1 bs=512
or what???

Also, how do you figure out the appropriate blocksize number? I just see 512 a lot, so I figure that is good, but I really don't know how to figure out correct blocksize number or if it even matters.

I don't care that the master boot record would end up all incorrect and yadda yadda on the larger disk, as that is fixable after the copy. I just want to know how to do this. ...thanks

[Germ]

bs is boot sector. resides in the first 512 bytes.

dd if=/dev/hd0 bs=512 count=1 of=/dev/hd1