Table of Contents
The SD card is accessible by partially disassembling the device. Remove the back cover of the Kobo Clara HD with a pry tool as shown below.
The pry tab is located near the "Kobo Clara HD" text
The bottom will pop out
Continue prying along the sides
Remove the back cover
Remove the SD card from the device and connect it to a computer. Copy the SD card's image with
sudo dd if="/dev/<sd card>" of="kobo_sdcard.img" bs=4m
macOS users: Ensure the 'm' is lowercase.
Reformat kobo_sdcard.img to new SD card by reversing
dd command's input/output path:
sudo dd if="kobo_sdcard.img" of="/dev/<sd card>" bs=4m
The third partiton (~8GB) must be resized in order for the device to hold the new SD card's extra capacity.
The Kobo Clara HD requires an account to active the device and purchase books from the Kobo store, however this registration can be bypassed if you do not have or plan on using an account.
When the device is initially powered on, it will prompt for a user account. Select "Don't have a Wifi network?" and connect the device to the computer. Navigate to the hidden
.kobo directory modify the database:
cd /Volumes/<kobo>/.kobo/ sqlite3 KoboReader.sqlite INSERT INTO user(UserID,UserKey) VALUES('1','');
When the device is ejected, the prompt will no longer appear and the device will be registered.
Developer mode can be enabled to activate beta features (and games!).
In the book search bar, type "devmodeon" and press enter. The "More" tab will now display a "Beta Features" tab.
To enable Telnet, SSH and more, continue following Lee Yington Li's guide. My guide was partially assisted by his.