The OS is Mint 18 Cinnamon.
I need to copy this existing system to a new HDD.
The existing drive is working fine but GsmartControl reports the following.
“Error 971 occurred at disk power-on lifetime: 64852 hours (2702 days + 4 hours)
When the command that caused the error occurred, the device was active or idle.”
I guess at 64852 hours one can expect the odd error so it’s time for replacement before total collapse.

Now my understanding is that most Cloning Software requires the Target Disk to be the same size as the original. In my case the old disk is only 250Gb and the smallest disk I can buy new is 1Tb.
I have “Timeshift” back-ups but my understanding is they are restore points, as opposed to clones, so aren’t suitable for what I want.
In short I want to copy my existing HDD to a new HDD of different size without having to reinstall everything including Shortcut’s and Desktop.
So what is the correct protocol for such an exercise before I wind up screwing up the original drive?
