Can Linux operating system disk be used to recover system failure, as used on Windows operating systems?
If yes! Then how?

It can't fix Windows, but it can recover your data, by using it running 'live', mounting your system, & copying your data to another disk.

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You may be interested in SystemRescueCD (a live DVD/USB with recovery tools) or LiveRecoverySystem (a non-live USB raw image with recovery tools, forked from an earlier version of SystemRescueCD)

SystemRescueCD: http://www.system-rescue-cd.org/
LiveRecoverySystem: https://forums.gentoo.org/viewtopic-...c-start-0.html

Rescatux also has a few options for recovering Windows, although it's primarily targeted at Linux systems. https://www.supergrubdisk.org/rescatux/

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jolly_akpaa,

Burn any live Linux such as Linux Mint or Ubuntu etc ISO image to DVD (or use Etcher or Rufus on a USB drive), then boot the PC.

https://www.howtogeek.com/howto/wind...dows-computer/

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I suggest any easy Linux, like Ubuntu. SystemRescue has a lot of useful tools, but it's not easy to use — the file manager sent me straight to the command line!

And as well as rescuing your date, Linux can sometimes fix things if it's just a filing-system failure — the tool ntfsfix will do the job and it's part of Ubuntu.

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Yeah a lot of distros can operate as a Live environment. This is actually what I do with Puppy Linux sometimes for Windows PCs. It's such a lightweight distro anyways that it can boot pretty quickly and then allow me to back up the files off the hard drive when using it "live".

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I keep an arch installer on my pxe server just in case these days. Command line only but it gets the job done for fixing screwed up configs in linux / file recovery on both. Has saved me a few times from my own misconfigurations when testing stuff on the desktop.

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Absolutely, I used to work for a BIOS company where they also provided the backup and restore capabilities for Windows systems, using the Linux OS.

It is, and isn't a slam dunk. You're basically live booting Linux from a protected or hidden partition on the hard drive. But there's application code as well as Linux kernel work. The Linux kernel work is to guarantee that it will boot, each time, every time. Not as easy as you think, BIOS and the HAL for every system out there varies greatly. In our case, we obviously were working to support all systems possible. The application code also needed to "work", it couldn't accidentally mess things up once or twice, if there was some untested situation, it had to work and not make things worse.

So there's a lot of testing and validation which goes into ANY recovery/restore OS and software.

You certainly can do this for your own situation, but I would caution that you ought to leave yourself a wide variety of options in your application, and be aware that the things that work for one system to get it to boot, do not always work on each and every system. So for the home use, there's leaving the options open in the application to be flexible, and the understanding that you should pre-test your boot engine to make sure it will work for the system(s) you wish to use this on.