First version of our AIMS2 error compilation

Coming from a discussion from Arne, as we tend to come back to recurrent errors.

Since linuxops is open to everyone, Arne and Procurement will benefit from this initial compilation. They can also propose MR with new findings.

docs/aims2/errorcollection.md

+# AIMS2 error compilation
+
+This section serves as a log of strange things we saw AIMS2 doing, for the record in case it even helps again.
+
+We welcome any contribution to this page.
+
+## UEFI world
+
+<table>
+<tbody>
+<tr>
+<td colspan="4"><b>DXE--CSM Initialization.. too little memory. Aborted. Press any key to exit.</b></td>
+</tr>
+<tr>
+<td>Where it appears</td>
+<td>Suspected reason</td>
+<td>Reference</td>
+<td>Resolution</td>
+</tr>
+<tr>
+<td>Loading image with GRUB2</td>
+<td>RPM update going wrong</td>
+<td>-</td>
+<td>Reinstall aims2-loaders and <code>service aims2sync restart</code></td>
+</tr>
+  
+ <tr>
+<td colspan="4"><b>loading initrd ...error: you need to load the kernel first. Press any key to continue...alloc magic is broken at 0x4b9bd7e0: 0. Aborted. Press any key to exit.</b></td>
+</tr>
+<tr>
+<td>Where it appears</td>
+<td>Suspected reason</td>
+<td>Reference</td>
+<td>Resolution</td>
+</tr>
+<tr>
+<td>Loading image with GRUB2</td>
+<td>Image is not yet on disk</td>
+<td>AIMS2 xinetd logs show error 404</td>
+<td>Wait for <code>aims2client showimg X --full</code> to show SYNC Status as YYX</td>
+</tr>
+
+<td colspan="4"><b>loading initrd ...error: connection timeout.</b></td>
+</tr>
+<tr>
+<td>Where it appears</td>
+<td>Suspected reason</td>
+<td>Reference</td>
+<td>Resolution</td>
+</tr>
+<tr>
+<td>Loading image with GRUB2</td>
+<td>Slow download speeds</td>
+<td>Check download speed before client error</td>
+<td>Reduce the amount of clients contacting AIMS2</td>
+</tr>
+ 
+<td colspan="4"><b>loading initrd ...error: out of memory</b></td>
+</tr>
+<tr>
+<td>Where it appears</td>
+<td>Suspected reason</td>
+<td>Reference</td>
+<td>Resolution</td>
+</tr>
+<tr>
+<td>Loading image with GRUB2</td>
+<td>Image too big. Hitting 4G memory limits</td>
+<td>-</td>
+<td>Reduce image size</td>
+</tr>
+
+<td colspan="4"><b>loading initrd ...error: couldn't find suitable memory target</b></td>
+</tr>
+<tr>
+<td>Where it appears</td>
+<td>Suspected reason</td>
+<td>Reference</td>
+<td>Resolution</td>
+</tr>
+<tr>
+<td>Loading image with GRUB2</td>
+<td>Unknown</td>
+<td>-</td>
+<td>Unknown</td>
+</tr>
+
+<td colspan="4"><b>Reboot and Select proper Boot device. Please press the &lt;DEL&gt; key into BIOS setup menu...</b></td>
+</tr>
+<tr>
+<td>Where it appears</td>
+<td>Suspected reason</td>
+<td>Reference</td>
+<td>Resolution</td>
+</tr>
+<tr>
+<td>-</td>
+<td>Unknown</td>
+<td>-</td>
+<td>Unknown</td>
+</tr>
+
+<td colspan="4"><b>DXE--CSM Initialization..error: no such partition. Entering rescue mode...</b></td>
+</tr>
+<tr>
+<td>Where it appears</td>
+<td>Suspected reason</td>
+<td>Reference</td>
+<td>Resolution</td>
+</tr>
+<tr>
+<td>-</td>
+<td>Unknown</td>
+<td>-</td>
+<td>Unknown</td>
+</tr>
+
+</tbody>
+</table>
+<p>&nbsp;</p>
+
+## BIOS world
+
+So far we do not have any reported issue for BIOS machines.