Converting the disk from basic to dynamic from windows

Question

I have a dual boot system, a windows 7 64 bit and an ubuntu 12.04 Lts alongside it. Because I bought my laptop with a bundled windows 7 pro, my disk have a reserved partition, a recovery partition, a partition for my windows and two partitions of ext4 and swap formats for my ubuntu which I created during installing it. Now I have a problem in windows that I can not create another partition from my unallocated space due to limitations of basic disks. I googled the problem and the suggestion was to convert my disk to dynamic in order to create more partitions. I wanted to ask you if someone else has done this before with windows disk manager before ? If I do this from windows, would it create any problem for my grub and ubuntu boot ? Does ubuntu generally support booting from dynamic disks ? Any kind of advice and experience would be appreciated.

Answer 1

No other OS can use Windows Dynamic Disks, and it's an obsolete format.
By the sound of it, your 4th partition is an extended partition. Inside that, you have logical partitions for Ubuntu. You can resize those & make as many logical partitions as you wish, *inside* the extended partition. You are only limited to 4 *primary* partitions - the extended one is one of these.