You now have to mount your Windows partitions. This will enable you to read and write to your windows partitions from linux. Windows partitions are marked as ntfs, fat16 or fat32 in the partitoner. Usually, as is also the case in this example, the C drive corresponds to the first partition on the hard disk, so it is /dev/sda1
You can also confirm this by seeing the size of the partiton in the partitioner (I am assuming that you know the size of your windows drives/partitions). So select /dev/sda1 and click Edit. You will get this dialog box
Now type /windows/c as shown in the mount point box. Click on Fstab options
In this tick mountable by user, and in the Arbitrary option value box add the entry
umask=0002
inbetween users, and fmask=133
so it should read
....users,umask=0002,fmask=133....
Please note it is umask and not unmask Click OK
Do the same for other windows partitions, the only difference being the difference in mount point. D will become /windows/d E will become /windows/E so on and so forth.
There is no need to mount the partition marked as extended partition.
This is how your proposed partition table layout finally looks like.
Remember, nothing has actually happened to your partitions as yet, this is just a proposed layout, so if you make a mistake in your newly created linux partitions you can simply go back and redo the partitioning.
Note the partition table down in a book and keep it safely. You will require it to rescue your system if need be, and to install the GAG boot loader later (optional but desirable). Click Next.
You will be shown, one last time the partitioning tasks that the installer is going to perform. Click Next