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I am working on some application where i need save some system state configuration files related to my application. So i want to save(Backup) it some where in the hard disk partition(as hidden or recovery partition) Whenever system crashes i can restore it. When System Crashes is it possible not to touch that partition while re-installing linux suse(or any other OS) and the files are still be available when the system is ready. When system Crashes or system re-install or OS change or some disaster happens the partition should not be affected.

Vishnu Sangam
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    in theory, yes. technique might vary based on whether using MBR or GPT. might be as easy as assigning the partition a partition id/type that doesn't match a known file type; you might even be able to manually mount it despite the wrong partition id/type, but lots of software may be less inclined to automatically muck with a partition of an unfamiliar type. – TOOGAM Feb 07 '17 at 05:17
  • sir TOOGAM can you give more information i am unable to understand. As i am new please tell me in detail. thank you – Vishnu Sangam Feb 07 '17 at 05:36
  • Hiding something this way is what a virus would do. Your program should do [the least surprising thing](https://en.wikipedia.org/wiki/Principle_of_least_astonishment). What if 20 other applications tried to do this your way? Why should yours be special? Put the config files in standard places (`/etc/`, `~/.*`) because users will expect them to be there. What if someone *wanted* to do a clean install? **Don't treat Linux users (and admins!) like children,** they should know how to save configs or purge them if they want to. Also: [KISS](https://en.wikipedia.org/wiki/KISS_principle). – Kamil Maciorowski Feb 07 '17 at 05:55
  • Files will be saved in the natural place where it has to be. But my question is to backup them without any help from internet or other external storage devices. – Vishnu Sangam Feb 07 '17 at 06:04
  • OK, I get it. There are well known tools (like `rsync`) that can do backup to a separate well-defined partition (or wherever) with admin's support. Encourage admins to do so instead of reinventing the wheel and implementing application-specific solution. However if you decide to reinvent then write a good documentation and make the backup optional – no admin likes it when a partition pops up from nowhere. Unpartitioned space [may be there for a reason](http://superuser.com/q/1173600/432690) and you shouldn't take it behind the admin's back. I wouldn't expect there will be space left at all. – Kamil Maciorowski Feb 07 '17 at 06:57

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