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+====== Kernel_problems ======
+River is currently booting off a PATA disk connected to a JMicron PATA controller.
+The current kernel is a hand-rolled 2.6.26-gentoo-r4, using the new libata driver.
+The JMicron controller is picked up last, behind four LVM disks, and one new system disk, so appears as <tt>/dev/sdf</tt>.
+===== Building a new kernel for the current OS =====
+The following kernel sources are installed
+  * 2.6.28-gentoo-r1
+  * 2.6.27-gentoo-r2
+  * 2.6.26-gentoo-r4
+Using genkernel, with the default configuration and additional support for nl80211 wireless
+==== kernel-genkernel-x86-2.6.28-gentoo-r1 ====
+When used to boot the current OS:
+ /sbin/rc: line 347: awk: command not found
+ /sbin/rc: line 387: /etc/init.d/checkroot: Input/output error
+ Failed to source /etc/init.d/checkroot
+ Failed to start /etc/init.d/checkroot
+ One or more critical startup scripts failed to start!
+ Please correct this and reboot
+ /sbin/splash-functions-bl1.sh: line 366: /sbin/sulogin: No such file or directory
+ Unmounting filesystems
+ Rebooting
+ /sbin/rc: line 417: /sbin/reboot: No such file or directory
+ /sbin/rc: line 387: /etc/init.d/modules: Input/output error
+ Failed to source /etc/init.d/modules
+ Failed to start /etc/init.d/modules
+ One or more critical startup scripts failed to start!
+ Please correct this and reboot
+ *loops*
+When used to boot the new OS:
+ ...
+===== Building a new OS =====
+==== kernel-genkernel-x86-2.6.28-gentoo-r1 ====
+When used to boot the new OS
+ Looks like it doesn't support UUIDs in /etc/fstab and fails to mount /var.
+ Also get lots of errors pertaining to ext3. Possibly a corrupt filesystem.
+   Could try rebuilding base OS in VMware - maybe river's current OS writes broken filesystems.
+When used to boot the current OS (on a whim)
+ Block device /dev/sdf2 is not a valid root device...
+ Could not find the root block device in .
+Because the kernel picks up the JMicron controller first. The boot device is now <tt>/dev/sda2</tt> instead of <tt>/dev/sdf2</tt>. When booted with the right device:
+ Boots, but doesnt find kernel modules for the running kernel.
+ Consequently no services start.
+===== Building yet another OS in vmware =====
+While attempting to rebuild the OS again in VMware, the following errors were encountered. The physical disk <tt>/dev/sda</tt> (<tt>sg1</tt>) was shared to the virtual machine.
+{{wiki:River-bad-disk.jpg?300}}