Contents of Planning Disk Space

If you are going to partition hard disks, you should carefully plan the allocation of disk space. The following table provides guidance on the minimum partition sizes needed for various versions of DOS and the OS/2 operating system. This table also tells whether the operating system must be in a primary partition or in a particular disk position.

Table: Planning Table for Partition Sizes

CONTENTS	SIZE	HARD DISK CONSIDERATIONS
DOS 3.3	2MB	Must be in a primary partition within the first 32MB on the first hard disk.
DOS 4.0	3MB	Must be in a primary partition on the first hard disk.
DOS 5.0	4MB	Must be in a primary partition on the first hard disk.
OS/2 1.X SE	20MB	Must be in a primary partition on the first hard disk. Uses less than 20MB, but segment swapping is inhibited.
OS/2 1.X EE	30MB	Must be in a primary partition on the first hard disk. Uses less than 30MB with reduced function.
OS/2 2.0	15-30MB	Can be in a primary partition or on a logical drive. The size needed varies with the features installed. See Table 5. Note also that the amount of hard disk space required varies depending upon the amount of system memory. If this partition is of minimum size, you might want to place the swap file in another partition. To do this, during installation, select SELECT FEATURES AND INSTALL from the OS/2 Setup and Installation window. Then, select SOFTWARE CONFIGURATION.

Note that some products (such as Extended Services for OS/2) require extra space in the OS/2 partition, even if they are installed in their own partitions. For more specific information about partition sizes, see the documentation that came with the product you are installing. For example, if you are installing Extended Services for OS/2, refer to the Extended Services of OS/2 Hardware and Software Reference for specific guidance.

If you are going to install multiple operating systems, read Chapter 4 of the OS/2 2.0 Installation Guide before starting the installation. Determine the amount of partitioned disk space you need for each operating system. Consider the following:

When determining how much space to allocate for the OS/2 partition, consider some of the tools and applications you will be installing and whether you want to install them in the OS/2 partition or on another logical drive. For example, suppose you are going to install the OS/2 Toolkit. By default, the Toolkit is installed in the partition used for OS/2 2.0. However, you can install it on a separate logical drive if you prefer. See "Application Development Tools" for more information.