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Old 11-03-2006, 01:54 AM   #1
lbdgwgt
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initrd question


Hallo all,

i am a beginner and trying to build a small linux system on CF card. i have a question about initrd.

I read something about it. it is said that initrd (initial RAM disk) is used at startup as the compressed image root filesystem. It is used for example to load the modules which is needed to load the real root filesystem.

But i dont really get the advantage of using it. why one consider to use it in his design. why don't we just put compile the modules needed to boot in the kernel, since initrd also take some memory.

thanks for the explanation
 
Old 11-03-2006, 02:01 AM   #2
Emmanuel_uk
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http://www-128.ibm.com/developerwork.../l-initrd.html
 
Old 11-03-2006, 02:57 AM   #3
lbdgwgt
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Hello,

thanks for the link. it is a very nice article indeed.
But one question theat i dont get the answer is, that what how or what consideration should i take to use the initrd when developing a linux system.

Maybe my question is more to the experience and design consideration.
I dont have so many experience (very little actually), so i want to ask someone who has tried to build a small linux system, and finally decided to/not to use the initrd.

The article shows how to build an initrd (very nicely described). but dont give the design considreation aspect of using initrd instead of just boot the real actual filesystem which is built minimalistic (small root file system).

big thanks for sharing,
 
Old 11-03-2006, 03:35 AM   #4
Emmanuel_uk
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small system = no room = no initrd I believe (not an expert TM)
read about uclinux for more info maybe
 
  


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