When partitioning using fdisk, after writing the new table, this is output into the text window: Calling ioctl() to re-read partition table. The user has 2 seconds to read that before this appears: Re-read table failed with error 16: Device or resource busy. Reboot your system to ensure partition table is updated. WARNING: If you have created or modified any DOS 6.X partitions, please see the FDISK manual page for additional information Syncing disks. 3 and a half seconds later, you're back in the installer. Unless you have used fdisk lots of times before, you're not going to be able to read that error message in the time that's given. You definitely won't be able to check the fdisk man page. Perhaps when fdisk returns non-zero, you can ask the user to click a button to proceed after they read any error messages?
May be after 7.0
*** Bug 13614 has been marked as a duplicate of this bug. ***