Fix Clock: Difference between revisions
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==Hook the laptop up to another one through the serial port== |
==Hook the laptop up to another one through the serial port== |
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(probably need to use a pc, though some builds for the XO may have the capability to do this) |
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# Connect a serial port to the laptop |
# Connect a serial port to the laptop |
Revision as of 18:25, 14 December 2007
This page is on how to fix a clock on a write protected machine. (these machines don't boot and give the message "
Get the back off the Laptop
- Remove the four screws below the top section of the laptop.
- Take off the plate over the screen.
- Remove the four screws around the screen.
- Slide the screen down.
- Remove the four screws holding in the back.
- Slide the back off.
- Put the screen back in place, and put in a screw or two.
Hook the laptop up to another one through the serial port
- Connect a serial port to the laptop
- Using a serial to usb converter, connect the laptop to your personal laptop
- Use a program like minicom to access the laptop serially
Fix the clock
- power up the laptop, and hit ‘i’ a bunch after seeing ‘Forth’ (easy to miss, just re-try)
- Then, do the following commands at the ok prompt. (hitting enter after each one)
- ok debug secure-startup (sets a break point at secure startup)
- ok resume (runs and breaks at secure start up)
- f (gives a forth 'ok' prompt)
- ok clock-node @ iselect
- ok decimal
- ok sec min hour day month year set-time (sec, min, hour, etc. should be numbers correlating to the current date) (e.g. 00 48 3 13 12 2007 set-time)
- power off, and try booting.