Q. I’m using CentOS Linux and I’d like to create bootable Linux CD for the same. How do I create an installation boot disk?
A. You need to find images/ directory located on CentOS / Fedora / RHEL or any other Linux distribution. This directory contains image files that can be used to create media capable of starting the Linux installation process.
More about images
- boot.iso – The boot.iso file is an ISO 9660 image of a bootable CD-ROM. It is useful in cases where the CD-ROM installation method is not desired, but the CD-ROM’s boot speed would be an advantage. To use this image file, burn the file onto CD-R (or CD-RW) media as you normally would.
- diskboot.img – The diskboot.img file is a VFAT filesystem image that can be written to a USB pendrive or other bootable media larger than a floppy. Note that booting via USB is dependent on your BIOS supporting this. It should be written to the device using dd.
Step # 1: Copy boot.iso to /tmp
Type the following command,
# cp boot.iso /tmp
Unmount cdrom
# cd; eject
Step # 2: Insert blank CD R/RW media
Find device name:
# cdrecord -scanbus
Write /tmp/boot.iso to blank cd, enter:
# cdrecord -v -dao dev=1,0,0 /tmp/boot.iso
Replace 1,0,0 with your actual device name obtained using cdrecord -scanbus command. See how to burn ISO images to Cds and CD-RWs under Linux for more information.
Write diskboot.img to floppy
This is optional and use the dd command to copy the image to the floppy / usb pen:
# dd if=diskboot.img of=/dev/fd0 bs=1440k
🐧 Get the latest tutorials on Linux, Open Source & DevOps via:
- RSS feed or Weekly email newsletter
- Share on Twitter • Facebook • 2 comments... add one ↓
| Category | List of Unix and Linux commands |
|---|---|
| File Management | cat |
| Firewall | Alpine Awall • CentOS 8 • OpenSUSE • RHEL 8 • Ubuntu 16.04 • Ubuntu 18.04 • Ubuntu 20.04 |
| Network Utilities | dig • host • ip • nmap |
| OpenVPN | CentOS 7 • CentOS 8 • Debian 10 • Debian 8/9 • Ubuntu 18.04 • Ubuntu 20.04 |
| Package Manager | apk • apt |
| Processes Management | bg • chroot • cron • disown • fg • jobs • killall • kill • pidof • pstree • pwdx • time |
| Searching | grep • whereis • which |
| User Information | groups • id • lastcomm • last • lid/libuser-lid • logname • members • users • whoami • who • w |
| WireGuard VPN | Alpine • CentOS 8 • Debian 10 • Firewall • Ubuntu 20.04 |
hi i am sankar. i am running rhel 5 version. i put the command cdrecord -scanbus . then result was this version is an unofficial with dvd suport.
how can i rectify?
Hi, I am Sanathan and Iam a windows user. Can U tell me how to create a bootable CD/DVD for linux redhat from windows os