Hack-A-N900/Usb Recovery Mode: Unterschied zwischen den Versionen

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+I bricked my maemo setup several times. Often the underlying problem would have been trivial to fix, if i had a way to access the rootfs. Patching bootmenu enables us to boot a minimal system with just usb network and sshd enabled. that's still not optimal because this solution relies on rootfs being accessible. why? - [http://www.mail-archive.com/maemo-developers@maemo.org/msg22365.html 1] [https://bugs.maemo.org/show_bug.cgi?id=6468 2] - in short, during boot process no seperate initrd is utilized - in fact the rootfs is misused for it -.- . the bootmenu script circumvents that by redirecting the pivot_root call issued by /sbin/preinit, which is a pretty dirty - yet effective hack. <i>hmmm... just an idea, but why not use the rootfs for initrd purposes only?...</i>
+sshd will be using settings from the rootfs.
+=== Prerequisites ===
+* [http://metalab.at/wiki/Hack-A-N900/First_Steps First Steps]
+* [http://metalab.at/wiki/Hack-A-N900/Development Development] - Software sources for apt, installing "patch".
+== Install bootmenu ==
+Login via ssh to your n900 and:
+<pre>
+# Get the bootmenu package:
+wget http://www.daimi.au.dk/~cvm/bootmenu_1.6_armel.deb
+# Install bootmenu package
+dpkg -i bootmenu_1.6_armel.deb
+# Install bootmenu script
+install_bootmenu
+</pre>
+Patch bootmenu.sh to fix key bindings and enable usb recovery mode
+<pre>
+cd /
+wget http://metalab.at/wiki/images/4/40/Bootmenu_n900usbrecov.patch
+patch -p0 < Bootmenu_n900usbrecov.patch
+</pre>
+If you like you can edit /bootmenu.conf and adjust the ip address the usb interface will start with in recovery mode:
+<pre>
+# IP address for USB networking
+USB_IP=192.168.2.15
+</pre>
+== Enable R&D mode and disable watchdogs ==
+Enable [http://wiki.maemo.org/Flasher flasher mode] and execute following on your pc:
+<pre>
+./flasher-3.5 --set-rd-flags=no-omap-wd
+./flasher-3.5 --set-rd-flags=no-ext-wd
+./flasher-3.5 --enable-rd-mode
+</pre>
+== Boot into recovery mode ==
+Reboot the device with the keyboard slide out(!).
+When the boot menu appears you can either select a boot entry or press "CTRL" to boot usb recovery mode.
+[[Kategorie:N900]]