Supposing that the hard drive is unmounted, you can just install and run gparted or qtparted. If the hard drive is your main hard drive (ie. you cannot unmount it), download a Linux LiveCD, burn it, place it in your drive and restart your computer. Boot from the LiveCD and then run gparted or qtparted.
Caution: BE VERY CAREFUL YOU COULD, BY ACCIDENT, DELETE ALL YOUR DATA
Assuming one of them is an extended partition on an MS-DOS partition table: Eight. If the partitions are all primary partitions: Four.
Primary Partitions are logical areas on Coputer storage devices that have direct reference in Master Boot Record. (Due to limitation imposed by MBR only four primary partitions can be created). While Extended partitions refer to logical areas created out of need for more than four Partitions.
Four partitions.
There are many ways. One of them is to connect the hard drive to another computer and use "Disk Management" to create partitions. Also you can use software from other companies such as Partition Magic, Acronis Disk Director and so on. Also if you have windows installation CD you can start the installation process before copying any files the OS will ask you to partition your hard drive.
Technically, only two or three. In some distributions its even possible to install all in one partition, but I don't recommend this. These days it's hard on BIOS computers to get all the partitions you want, since between Windows and your OEM you'll have three out of four of your partitions used, you'll need to set up an extended partition. Unless you're on UEFI! In which case you're golden.
A single MBR-Style disk can contain a maximum of four primary partitions.
four primary partitions
four primary partitions
Typically you can only have 4 primary partitions per hard drive if you are using the MBR partition layout scheme. If you need more partitions than the maximum allowed (4), then there is a way to get many more partitions with only one hard drive.By creating an extended partition you can have as many logical partitions as you need within that extended partition, thus you can have more than only four partitions. You can have 3 primary partitions and one extended partition (for a total of 4), and inside the extended partition you can have as many logical partitions as you need.The one thing to keep in mind is that any type of Windows Operating System needs to be installed in a primary partition, otherwise you cannot boot into it. Windows XP in particular, needs to be installed in the first primary partition. For everything else, you can create as many logical partitions as you want inside the extended partition.
four primary
As many as it can handle (how big it is). And adding partitions does not make more space. It's like putting a brick wall in the middle of a football field. :-P This is depend on your disk style, if your disk is MBR, you could only create four primary partitions or three primary partitions with one Extended partition (you could create many logical partition under extended partition) at most If your disk style is GPT, you could create as many as you can. here is an article about how to make partition from http://www.partition-magic-windows7.com/res/create-partition-windows7.html
In Windows Server 2008, a physical drive using MBR partition style can have up to four primary partitions and one extended partition.