So I have a 4 GB CF hard drive in my miggy, and I would like change it to a 8 GB one using my PC and a memory card reader I bought recently. I want to copy the whole content of the old card to the new one, so I could just plug it to A1200 and it would boot normally to OS that was in the old card.
I will format the new card using my A1200 and HDToolBox, and then plug it to my pc. Do I have to use WinUAE to transfer the files from a card to another?
And since I have only one card reader, what way can this be done ?
Thanks again 
If I remember correctly...
I was able to:
Format the new CF card on the A1200
Connect both the older smaller CF drive and the newer CF card to my PC using appropraite IDE adapters and boot into UAE.
Then it's just a matter of booting off the olde drive and using diskmaster2 or even workbench copy - paste into the empty volume.
Then quite uae, remove the old drive, set UAE to boot off the new drive, verify that everyting works and then connect your new drive to the A1200.
Kick Ass time to be had by all playing old AGA and ECS games from the hard drive.