1. Download Debian 5.0 Lenny GNU/Linux ISO from http://cdimage.debian.org/debian-cd/5.0.0/i386/iso-dvd/ ( Please do not change downloaded ISO file name. If you change ISO file name it doen't work in some cases).
2. Make a directory
e.g. mkdir Debian-Lenny-ISO
and saved the downloaded ISO file into it ( you can save it in Linux or Windows system both)
3. Boot from live cd
4. You will get a command line interface window.
5. If you are installing from other than CDs/DVDs, that is, if you are installing from files on the local hard disk or from files on another system using FTP, NFS, or HTTP, give the following command in response to the boot: prompt:
boot: linux askmethod
6. In case of Hard Drive,
If you have copied the Linux ISO images to a local hard drive, you can use this method. You need a boot diskette or a boot CD-ROM (use the linux askmethod boot option).
7. Will ask - What type of installation method do you wish to use?
The following installation methods are available: CD-ROM, Hard Drive, NFS, FTP, HTTP.
Hard drive installations require the use of the ISO (or CD-ROM) images. An ISO image is a file containing an exact copy of a CD-ROM disk image. After placing the required ISO images (the binary Linux CD-ROMs) in a directory,
8. Choose to install from the hard drive. You can then point the installation program at that directory to perform the installation.
Hard drive installations only work from ext2, ext3, or FAT file systems. If you have a file system other than those listed here, such as reiserfs, you will not be able to perform a hard drive installation.
Verifying that the ISO images are intact before you attempt an installation will help to avoid problems that are often encountered during a hard drive installation. To verify the ISO images are intact prior to performing an installation, use an md5sum program (many md5sum programs are available for various operating systems). An md5sum program should be available on the same server as the ISO images.
ISO images have an md5sum embedded in them. To test the checksum integrity of an ISO image, at the installation boot prompt, type:
Itanium users should use the elilo linux mediacheck command.
9. The Select Partition screen applies only if you are installing from a disk partition (that is, if you selected Hard Drive in the Installation Method dialog). This dialog allows you to name the disk partition and directory from which you are installing Linux.
Enter the device name of the partition containing the Linux ISO images. There is also a field labeled Directory holding images.
If the ISO images are in the root (top-level) directory of that partition, enter the path to the ISO images (for example, if the partition on which the ISO images are located is normally mounted as /home/, and the images are in /home/new/, you would enter new).
If the ISO images are not in the root (top-level) directory of that partition, enter the full path to the ISO images (for example, if the ISO images are located in /test/new/, you would enter /test/new/).
After you have identified the disk partition, the Welcome dialog appears.
After this s, follow the same procedure as the standard installation (CD/DVD-ROM).