rdev: See man rdev. Rdev is a Linux command to change certain values in the Linux kernel (? -- bootable image) that control things like the root device, the video mode, and the size of the ram image.

From The BootPrompt-HOWTO:

There are a few of the kernel boot parameters that have their default values stored in various bytes in the kernel image itself. There is a utility called rdev that is installed on most systems that knows where these values are, and how to change them. It can also change things that have no kernel boot argument equivalent, such as the default video mode used.

The rdev utility is usually also aliased to swapdev, ramsize, vidmode and rootflags. These are the five things that rdev can change, those being the root device, the swap device, the RAM disk parameters, the default video mode, and the readonly/readwrite setting of root device.

Contributors

• RandyKramer - 03 Feb 2002
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