sd** label can be found in th /mnt directory if it is a Hard drive it will probably be hd**. Th ** will be a letter and a number.
or look in th Storage Media dir (click yellow star on th vertical tabs on left of file browser) and check th properties of th devices listed there to identify th device you want to install to.
Sorry cant help with qparted i use boot disc to partition.
I have used fdisk occasionally but not for resizing:
Type: man fdisk - for instructions
Type: fdisk /dev/sd* - to start the fdisk program