Linux Mint Forums

Is this when you want to install from the Live CD?
If so you may have chosen to let partitioning be "automatic". If you select to manually edit the partition table you should be able to see and select the partition you want

?
This must be something specific to your config, else I would not have installed in an existing partition
fdisk shows it all so it's there. Can you access all partitions from your installed Linux? If you check for disk errors (fsck) do you find any?
It really seems strange..