I know a similar question has been made already (http://askubuntu.com/questions/35303/linux-swap-partition-is-in-extended-drive) but I have a similar problem with a partition alignment warning.
I installed Ubuntu 10.04 on a 640 GB disk using the full-disk/auto-partitioning option. Ubiquity created the following schema:
Dispositivo Boot Start End Blocks Id System /dev/sda1 * 1 76353 613297152 83 Linux /dev/sda2 76353 77826 11832321 5 Esteso Partition 2 does not start on physical sector boundary. /dev/sda5 76353 77826 11832320 82 Linux swap / Solaris
as you can see from the fdisk output, second partition (extended) is misaligned with the physical sector boundary. Disk Manager says: "WARNING: the partition is misaligned by 1024 bytes. This may result in very poor performance. Repartitioning is suggested".
Question 1a: why is the swap partition (sda5) inside the extended one (sda2)? 1b) Is it necessary?
Question 2: removing both sda5 and sda2, and subsequently create a new swap partition, will solve the alignment problem?
Thank you. Dave