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Setting up file systems in Linux. Why?

E

EHobaX

Member
Okay. I have a question that's been bugging me for a while.

Everytime I read a FAQ or manual is says to set up separate file systems with Linux. i.e. /home = 40% of HD, / = 500-800MB, etc.

My question is why? If I install RH or Mandrake, it sets up directories for me like /home /usr, etc. Is there a reason to explicity set up those directories? Is it similar to why you would partition your HD in windows?

Dazed and confused.

EDIT: Oh yeah. IF I do set up the / as 800 MB, when I go through the installer, it says I don't have enough disk space. Is there a way to make the files install to the other /dirs I created?
 
Each mount point has it's own reasons for being recommended. For example if you make /home a seperate partition you can reinstall and format / but keep all your data and config settings in /home intact.

For a home PC the only one I'd really recommend seperating is /home.

EDIT: Oh yeah. IF I do set up the / as 800 MB, when I go through the installer, it says I don't have enough disk space. Is there a way to make the files install to the other /dirs I created?

Install fewer packages, all the packages put things in /usr and /var and if they're not big enough there's not much you can do about it.
 
If you separate /, /home, /usr, /tmp, /var you are isolating the heavily written partitions from your root partition. So if your machine goes down for whatever reason, you have less chance of having to do a manual fsck on your root partition. Throttle your root partition and you'll have the joys of spending a weekend reinstalling.

(in other words, it's safer)
 
Ahh. I see.

Thanks guys for the explanations. I just like to know what's going on with my stuff before I set stuff up. 🙂
 
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