Thread: Clara HD database disk image error
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Old 10-25-2020, 12:17 AM   #13
davidfor
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Posts: 24,905
Karma: 47303824
Join Date: Jul 2011
Location: Sydney, Australia
Device: Kobo:Touch,Glo, AuraH2O, GloHD,AuraONE, ClaraHD, Libra H2O; tolinoepos
Quote:
Originally Posted by retro View Post
All the connecting and disconnecting must have pushed it over the edge and the reader quit being recognized and wouldn't delete books.
I did a factory reset, didn't lose my patches, just added the fonts and books back and everything is fine again.
That suggests something was going on and the way that calibre access the database. My Glo HD has will connect to my main laptop and I can look at the disc. But, run calibre, and it an error is raised by both calibre and Windows. There might have been something along those lines. Possibly just reformatting the book partition was enough.
Quote:
One thing I did try after the reset was to open the BookReader.sqlite and got the popup for the encryption password unlike the malformed error like before. I made a copy of the file to try replacing when it happens again. I'm sure I will be able to try some of your other suggestions too.
Reading back, I hadn't noticed that the copy you took of this gave an different error. That makes me more confident that it was a file system corruption of some sort. Hopefully it isn't a failing SD card. If it happens again, I'd replace the card.

As to BookReader.sqlite, forget about it. It is completely and utterly uninvolved in anything that you have been describing. It will only be used if you have a Kobo Plus account. Calibre does absolutely nothing with it. It has absolutely no idea the file exists. If you think something is wrong with it, just delete it. The device will recreate it.
Quote:
I can't remember exactly when this first started earlier this summer so it could possibly be an issue with calibre and another version might fix it. I'm just not ready to move to 5 yet.
I don't think it is a software issue. I think it is more likely that the file system was corrupt somehow, or possibly the SD card is failing.
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