Free web design - 260 Part III . Choosing and Installing a
260 Part III . Choosing and Installing a Linux Distribution . The fdisk man page recommends that you use partitioning tools that come with an operating system to create partitions for that operating system. For example, the DOS fdisk knows how to create partitions that DOS will like, and the Linux fdisk will happily make your Linux partitions. Once your hard disk is set up for dual boot, however, you should probably not go back to Windows-only partitioning tools. Use Linux fdisk or a product made for multiboot systems (such as Partition Magic). . You can have up to 63 partitions on an IDE hard disk. A SCSI hard disk can have up to 15 partitions. You won t need nearly that many partitions. If you are using Linux as a desktop system, you probably don t need a lot of different partitions. There are, however, some very good reasons for having multiple partitions for Linux systems that are shared by a lot of users or are public Web servers or file servers. Multiple partitions within Fedora Linux, for example, offer the following advantages: . Protection from attacks. Denial of Service attacks sometimes take action that tries to fill up your hard disk. If public areas, such as /var, are on separate partitions, a successful attack can fill up a partition without shutting down the whole computer. Because /var is the default location for Web and FTP servers, and expected to hold a lot of data, entire hard disks often are assigned to the /var file system alone. . Protection from corrupted file systems. If you have only one file system (/), its corruption can cause the whole Fedora Linux system to be damaged. Corruption of a smaller partition can be easier to fix and often allows the computer to stay in service while the correction is made. Here are some directories that you may want to consider making into separate file system partitions. Directory Explanation /boot Sometimes the BIOS in older PCs can access only the first 1024 cylinders of your hard disk. To make sure that the information in your /boot directory is accessible to the BIOS, create a separate disk partition (of about 100MB) for /boot and make sure that it exists below cylinder 1024. The rest of your Linux system can exist outside of that 1024-cylinder boundary if you like. Even with several boot images, there is rarely a reason for /boot to be larger than 100MB. (For newer hard disks, you can select the Linear Mode check box during installation. Then the boot partition can be anywhere on the disk.) /usr This directory structure contains most of the applications and utilities available to Fedora Linux users. Having /usr on a separate partition lets you mount that file system as read-only after the operating system has been installed. This prevents attackers from replacing or removing important system applications with their own versions that may cause security problems. A separate /usr partition is also useful if you have diskless workstations on your local network. Using NFS, you can share /usr over the network with those workstations.
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