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Old 02-26-2025, 02:07 PM   #3140
tahphallus
Junior Member
tahphallus began at the beginning.
 
Posts: 4
Karma: 10
Join Date: Feb 2025
Device: Kobo Clara HD
Quote:
Originally Posted by DNSB View Post
The µSD internal to the Clara HD has the operating system on it. A new µSD card is not going to have that operating system partition so will not boot or do anything useful.

The image I've sent you is an image of the entire µSD card (the free space which is used for serial number, etc., the first Linux ext4 partition which is where your Clara HD boots from, the second Linux ext4 partition which is used for the recovery boot and the FAT32 partition which is the one exposed over USB.

Note that Windows out of the box does not read ext4 partitions and wants to reformat the card which will destroy it's contents when the card is connected directly to a Windows computer.

Once you have the image use BalenaEtcher or USB Duplicator Image Writer to write the image to a new µSD card.

The image has firmware 4.38.21908 already installed. Once your Clara HD is working again, you can upgrade to 4.38.23171 either over the air or by downloading the firmware from the links on Patrick Gaskin's Kobo Firmware Downloads page.
Hi David,

thank you for sending the link to the new image.
I have flashed the image with USB Duplicator image writer to a new sandisk ultra 32gb card.
Now when I turn on the Kobo, I still have a blank screen, and the white led is also still just white without blinking.
Based on the led I would assume that it is working now, but still nothing is visible on screen.
I'm wondering whether the screen might have died.

Since there are few linux partitions on the sd card, is there then also some sort of linux version running on the Kobo?
And can I, through the USB port, maybe connect to it and get to a terminal of some sorts and run some diagnostiscs to check if it actually booted up but I just can't see it because it has a dead screen?
Because when the screen is broken, I can order a new screen and fix it that way.
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