Difference between revisions of "Initrd"
From Linuxintro
imported>ThorstenStaerk |
imported>ThorstenStaerk |
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[http://linux.die.net/man/1/cpio cpio] -id < ../initrd | [http://linux.die.net/man/1/cpio cpio] -id < ../initrd | ||
Do the needed changes now in this folder. Then pack the initrd again: | Do the needed changes now in this folder. Then pack the initrd again: | ||
| − | + | /tmp/tmp2 # find . | cpio --create --format='newc' > ../newinitrd | |
| − | cd .. | + | 40242 blocks |
| − | [[ | + | /tmp/tmp2 # cd .. |
| + | /tmp # gzip newinitrd [[find]] . | cpio --create --format='newc' > ../newinitrd | ||
Your new [[initrd]] is now called newinitrd.gz. | Your new [[initrd]] is now called newinitrd.gz. | ||
Revision as of 11:24, 20 August 2014
The Linux boot process will first mount an initial ramdisk to mount the harddisks. This is how you modify an initrd:
mkdir tmp cd tmp cp /boot/initrd initrd.gz gunzip initrd.gz mkdir tmp2 cd tmp2 cpio -id < ../initrd
Do the needed changes now in this folder. Then pack the initrd again:
/tmp/tmp2 # find . | cpio --create --format='newc' > ../newinitrd 40242 blocks /tmp/tmp2 # cd .. /tmp # gzip newinitrd find . | cpio --create --format='newc' > ../newinitrd
Your new initrd is now called newinitrd.gz.
