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I've installed RHEL 5 for my server and configured kernel 2.6.18-8.el5 as a Monolithic kernel (loadable modules aren't supported). Now I need to create a rescue CD. I put the new CD to the driver and use this command: cp /boot/vmlinux-2.6.18-8.el5 /dev/cdrom
But it announces that: Cannot create a file in /dev/cdrom, it is a read-only file system.
Could you please give me the way to create a rescue CD?
Yes, but it's a good place to start by telling someone they need to burn the CD when they're trying to copy a file to a CD device using the cp command. And pull my head in? I never said anything about your posts.
Yes, I need a rescue CD to reboot the machine with my configured kernel in emergency cases.
There are three utilities I've used, with great success. Check out the mkcdrec, systemimager, and mondoarchive utilities. All of them can make bootable images, suitable for either network or DVD/CD booting and recovery from a 'bare metal' situation.
IMHO, it's best to make a bootable CD with a kernel, custom-suited to your hardware. That way, if you boot from it, you know you'll have all the hardware modules needed to get disk drives/network adapters/video, etc., working right off the bat. From there, you can (at least with mondoarchive), pull an ISO from a network resource. That'll let you have an aged recovery CD in the drive, with a current 'snapshot' (created with CRON or other scheduled job), on a network resource elsewhere.