Originally Posted by GeoffR
I followed the procedure in this thread with success: https://www.mobileread.com/forums/sho...d.php?t=200703
This will certainly void your warantee, and it is possible to end up with an unbootable e-reader and even an unbootable computer if you do it wrong, so be warned.
If you are familliar with Linux the basic procedure is to copy the raw disk image from the original card to the larger card using "dd", then expand the data partition on the larger card with "gparted" to make use of the extra space.
Thanks Geoff - if I go for the mini, I may even find the courage to do it: after all, if you put back the original card in case of problems all should be well, right?