Kobo rebooting during large import

bob.f · 01-11-2026, 06:21 PM

Hi. I've recently sideloaded a large number of books to my ereader. My understanding is that before they will be visible in the stock interface they need to be imported. I have done the import a number of times, typically what happens is it gets part way through, pauses at a particular percentage for a few minutes, then the device reboots.

I'm assuming this is because of a dodgy file that the import is having issues with. Without doing repeated partial sideload / import workflows is there a way I can somehow identify which file is causing the problem?

geek1011 · 01-11-2026, 07:40 PM

syslog via ssh or nickelmenu

fogice · 01-12-2026, 10:57 AM

I've had this issue with a Libra 2. I don't think the issue is a specific book. When I do partial library sideloads, everything loads properly. I think maybe there's a GB limit on how much you can load at once?

lambstone · 01-14-2026, 08:57 PM

Quote:

Originally Posted by fogice

I've had this issue with a Libra 2. I don't think the issue is a specific book. When I do partial library sideloads, everything loads properly. I think maybe there's a GB limit on how much you can load at once?

Same here, there is a bandwidth limit of sorts. I get the same issues sometimes when loading books via calibre wireless in Koreader and also generating cache within KoReader.

Vagabondo78 · Yesterday, 05:01 AM

Hi.
And I have the same problem, Libra 2. I noticed that up to 1000 books (around 800–900) import normally, but if there are more, it says the reader is out of battery and reboots. Possibly it’s related to writing to the database or to RAM.

DNSB · Yesterday, 06:51 PM

When I copied 16,000 books to my Clara HD, I turned off sleep and power off and used a wall wart to supply power while the import was in progress. It took a while but completed without issue. These are all books that have been checked and edited before moving to my main calibre library.

01-11-2026, 06:21 PM	#1
bob.f Connoisseur Posts: 99 Karma: 99068 Join Date: Nov 2017 Device: N/A	Kobo rebooting during large import Hi. I've recently sideloaded a large number of books to my ereader. My understanding is that before they will be visible in the stock interface they need to be imported. I have done the import a number of times, typically what happens is it gets part way through, pauses at a particular percentage for a few minutes, then the device reboots. I'm assuming this is because of a dodgy file that the import is having issues with. Without doing repeated partial sideload / import workflows is there a way I can somehow identify which file is causing the problem?

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01-11-2026, 07:40 PM	#2
geek1011 Wizard Posts: 2,822 Karma: 7424433 Join Date: May 2016 Location: Ontario, Canada Device: Kobo Mini, Aura Edition 2 v1, Clara HD, Clara BW, Libra Colour	syslog via ssh or nickelmenu

01-12-2026, 10:57 AM	#3
fogice Addict Posts: 288 Karma: 50000 Join Date: May 2014 Device: Kobo Libra 2	I've had this issue with a Libra 2. I don't think the issue is a specific book. When I do partial library sideloads, everything loads properly. I think maybe there's a GB limit on how much you can load at once?

Yesterday, 05:01 AM	#5
Vagabondo78 Junior Member Posts: 3 Karma: 10 Join Date: May 2022 Location: Kharkiv, Ukraine Device: Kindle PW3, Kobo Libra 2, Nook Simple Touch	Hi. And I have the same problem, Libra 2. I noticed that up to 1000 books (around 800–900) import normally, but if there are more, it says the reader is out of battery and reboots. Possibly it’s related to writing to the database or to RAM.

Yesterday, 06:51 PM	#6
DNSB Bibliophagist Posts: 49,564 Karma: 174632684 Join Date: Jul 2010 Location: Vancouver Device: Kobo Sage, Libra Colour, Lenovo M8 FHD, Paperwhite 4, Tolino epos	When I copied 16,000 books to my Clara HD, I turned off sleep and power off and used a wall wart to supply power while the import was in progress. It took a while but completed without issue. These are all books that have been checked and edited before moving to my main calibre library.