Autoreinstallation image: Difference between revisions
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We've worked very hard to make it as easy as possible to update a machine in the field. Until network boot and update is available, this is as easy as it can get. |
We've worked very hard to make it as easy as possible to update a machine in the field. Until network boot and update is available, this is as easy as it can get. |
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<b>NOTE: this procedure creates a USB flash key or disk that when booted on an OLPC |
<b>NOTE: this procedure creates a USB flash key or disk that when booted on an OLPC laptop, updates its BIOS and installs (OVERWRITES) an operating system image onto NAND flash. NEVER boot this USB flash key or disk unless you intend to update your system, which will entirely erase anything you had on the flash memory of the system.</b> |
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<b>This image will only work on a "B-Test" laptop, and not on older "A-Test" motherboards. An update image for "A-Test" boards will come later.</b> |
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==System Update Procedure== |
==System Update Procedure== |
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Revision as of 04:30, 4 December 2006
Automatic Reinstallation Image
Under construction: do not yet use
We've worked very hard to make it as easy as possible to update a machine in the field. Until network boot and update is available, this is as easy as it can get.
NOTE: this procedure creates a USB flash key or disk that when booted on an OLPC laptop, updates its BIOS and installs (OVERWRITES) an operating system image onto NAND flash. NEVER boot this USB flash key or disk unless you intend to update your system, which will entirely erase anything you had on the flash memory of the system.
This image will only work on a "B-Test" laptop, and not on older "A-Test" motherboards. An update image for "A-Test" boards will come later.
System Update Procedure
Before you start: plug in your machine and ensure the battery is charged. It is very important that the update process not be interrupted.
- Download the file http://olpc.download.redhat.com/olpc/autoupdate/olpc193.zip.
- Unzip the files onto a sufficiently large USB flash key or disk drive (currently 256 megabytes is sufficient), creating a directory called "boot". If you drag and drop the files from the zip archive, you'll have to create the "boot" directory manually on the flash or disk drive. All the files must be in the directory named "boot", for the automatic update to occur. Do not use a flash key or disk for which there have been any errors reported during unzipping: the files may (probably are) damaged. As a further safeguard, the OLPC OFW BIOS checks the integrity of any BIOS flash image before reflashing the BIOS.
- Insert the USB flash key into the machine. Boot the machine.
You will see messages like those in the following section as the system is updated. NAND flash always has some bad blocks: the "Skipping bad block" messages during writing NAND flash are therefore normal, informing you of the bad blocks that will never be used by Linux.
The system will automatically poweroff.
If anything goes wrong DO NOT TURN OFF THE MACHINE but please get help from OLPC, preferably immediately on IRC or by email.
As a final step, to ensure the embedded controller has been reset, unplug the power supply, and remove the battery. After 10 seconds, reinsert the battery and boot the system. This may not actually be necessary, but we have not yet verified that the embedded controller is actually being reset.
Congratulations: you are finished! You can power the machine back on and start use.
Transcript of System Update
Type any key to interrrupt startup Erasing 0 Writing f000 Updating firmware Reading disk:\boot\q2a52.rom Got firmware version: CL1 Q2A5a Q2A Checking integrity ... SPI FLASH is type 13 - Spansion, Winbond, or ST Merging existing manufacturing data Erasing 0 Writing ff000 ... Done Checking existing OS image on NAND FLASH Updating OS image on NAND FLASH Erasing 1d00 Skipping bad block at 0xea000 = page 0x1d40 = eblock 0x75 4ec0 Skipping bad block at 0x2780000 = page 0x4f00 = eblock 0x13c 3ff40 Writing 57a Done Automatic power off in 5 seconds. Please remove the USB disk.