it will work fine like you have it, if the second partition is free then I would go into the manual partition and create a boot partition first, around 25 MB should be okay, if you update the kernels you can always go in and remove the old ones.
it will say that it may not boot, it will still boot however using LBA, the install will likely take care of it so just install and see. then make any other partitions you want, the order does not really matter.
|