Talk:Reinstall OS

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Note: When installing via touchbook (using reboot method)

As the article states, you MUST have an internet connection available for the TB to connect and download the new OS files. What it doesn't tell you is that you MUST protect it with a WEP key. It will not do WPA, and it will not do an unencrypted network. You must have a WEP key enabled for your wireless connection, otherwise it won't be able to connect!!!

Note: This will take a long time

The sdcard.gz file expands to 8GB and the SD card is a class 6 card, so it's rated for 6MB/sec. That means at best speed it will take about 23 minutes for the dd operation to complete. If your SD card writer isn't very high performance then this write could take even longer. Also, it will overwrite every sector on the SD card, which is generally a bad thing to do (due to the wear-leveling management on a flash storage device - it works best when there are unused sectors; even if you write zeroes to a sector the SD card things the sector is now used...).

If this doesn't sound good to you, then you should follow the advanced instructions.

Note: Installing from local directory

When installing from local directory (after downloading the needed files), the correct command is:

./install-sd.sh -v 2010-09.a -d /dev/mmcblk0 -a

In other words, you do not need to specify -o. as this is the default, but you need to specify the version or the script goes to web to get it.


Reinstalling on the touchbook without wifi

For those of us who are unable to change their wifi settings to WEP, e.g. it's a work wifi network, and are forced to use the USB flash disk method, it should be noted that you must use a FAT32 (i.e. vfat) formatted USB disk with exactly one partition. Also, you must insert the USB drive into the touchbook before turning it on, and only type '6' after the disk has been detected, indicated by the kernel output lines starting [sda], which appear after the menu.

Update: And it appears this technique does not work. During the install process I get the message

sleep: invalid number '.05'

repeatedly. I assume this is part of a loop to monitor progress or print a spinner or some such, so it's not too much of a worry, but the next error message

caution: filename not matched:  ai-os.squashfs

Definitely doesn't bode well.

Finally, on reboot after installation is complete, I get a kernel panic if I try to boot into ai-os, but not into ubuntu

Kernel panic - not syncing: No init found. Try passing init= option to kernel.

I'm using a touchbook 1, just in case that makes a difference to anyone

Cleaning up this page

I don't mean to be rude, but is it possible to get editing rights on this page to clean up the English, in some places it's more than a little confusing.

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