> A> Make bootable floppy
> B> Start in single user mode
> C> Create same partition structure on hew drive
> D> Move all files from old partitions to new partitions
> E> Switch drives
> F> Boot off floppy, mount, reinstall grub and boot manager on new drive
> G> Profit!
well if you want a real quick'n'dirty way to do it then you can simply
turn off the computer, hook up the drive, boot with kernel command line
init=/bin/bash, watch the messages for info on what device name the new
drive got and do "/bin/dd if=/dev/hd{source} of=/dev/hd{target}
bs=1048576", once it completes do "/bin/sync" and powerdown, remove the
old disk and hook up the new disk in it's place and reboot and usually
everything works normally. [it does screw up drive geometry but since
linux uses LBA adressing anyway this is irrelevant]
if there are read errors on the source drive you'll probably want to use
dd_rescue instead of dd.