The procedure for creating a duplicate of the SD card shipped with the PicoCalc seems to be a Linux script. Is there a similar way to create the partitions from Windows?
Note that you don’t actually need to do it unless you want to use Fusix, because that’s the only thing that uses the second partition. A normal FAT32 card will work fine otherwise.
Use Disk Management to create two partitions, the first taking up everything but the last 32MB, and the second filling the remainder. Format the first partition as FAT32 and you’re done.
Putting the contents on the second partition under windows pretty much requires third-party tools, however.