====== geninitrd ======

Initial ramdisk used mostly only to mount root filesystem.

===== Generation =====

Check available kernels (Example: section):
<code>
# geninitrd 
</code>
Regenerate (adding -v to see details) as suggested in above examples:
<code>
/sbin/geninitrd -f --initrdfs=initramfs /boot/initrd-KERVER.gz KERVER
</code>


===== Debbugging =====
Getting shell just after initrd boot ends/fails:
Edit  '' /etc/sysconfig/system'' , set:
<code>
RUN_SULOGIN_ON_ERR=no
</code>
Add 
<code>
debugrd=sh 
</code>
to kernel boot options (by editing'' /boot/grub/grub.cfg'' or adding  to GRUB_CMDLINE_LINUX_DEFAULT in ''/etc/sysconfig/grub'' and running update-grub)

Reboot.
HINT: CTRL+PgUp/PgDown scrolls initrd logs.

===== Checking generated initrd image =====
Uncompressing initrd, copy first, ungzip, uncpio:
<code>
cp /boot/initrd.*.gz  /root/geninitrd
gunzip  initrd-4.1.15-1.gz
cpio -idmv < initrd-4.1.15-1
</code>

or have [[package>lesspipe]], [[package>file]] installed and use [[package>less]]:

<code>
# less /boot/initrd-2.6.38.8-1.gz
</code>