Hi,
I didn't try that yet but when I start parted I do see something that might be of interest to the whole partitioning problem during the installation, making the assumption that pyparted is a frontend for parted.
parted doesn't show sdb3 as a partition, this will become problamatic when you create more than 2 partitions I assume..
[root@medusa patrick]# parted /dev/sdb GNU Parted 1.9.0 Using /dev/sdb Welcome to GNU Parted! Type 'help' to view a list of commands. (parted) p Model: ATA SAMSUNG HD103UJ (scsi) Disk /dev/sdb: 1000GB Sector size (logical/physical): 512B/512B Partition Table: sun
Number Start End Size File system Flags 1 0.00B 461GB 461GB ext3
(parted)