[all variants] 4 Primary Partitions PreInstalled

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http://ubuntuforums.org – My new laptop came with 4 primary partitions already installed: * 200 MB system info (partially filled) * Windows Main Partition (C:) * Windows Backup Partition (D:) * 20G OEM Partition that Windows can't touch and thinks is 100% empty. Now, the problem is that you can have at most 4 partitions with MBR: http://www.linuxbsdos.com/2011/09/18...ions-in-linux/ The question is what do I do about this? I was hoping the installer would have a solution, but it doesn't. How safe is it for me to overwrite one of these partitions? Is it possible to convernt from MBR to something like G (Hardware)