Kobo Forma will not connect to calibre

Ned · 03-27-2021, 01:17 PM

Hello
I get this error message when I plug my Forma in.

calibre, version 3.44.0
ERROR: Error: Error communicating with device

CorruptError: database disk image is malformed

Traceback (most recent call last):
File "site-packages/calibre/gui2/device.py", line 89, in run
File "site-packages/calibre/gui2/device.py", line 512, in _books
File "site-packages/calibre/devices/kobo/driver.py", line 1943, in books
File "site-packages/calibre/devices/kobo/driver.py", line 1822, in get_bookshelvesforbook
File "src/cursor.c", line 236, in resetcursor
CorruptError: CorruptError: database disk image is malformed

I have searched the forum and not found a solution.
Restarting the device via the on/off button does not help.

I did notice prior to this that I deleted a book on the Forma and it is still there, after confirming the deletion. Other than that noticed nothing odd.
I manually deleted the book on my PC and that made no difference.

Any suggestions please how to make it connect?

Can I manually edit the database disk image to correct it?

PeterT · 03-27-2021, 02:15 PM

If the database is corrupt them you can either restore from a recent backup, or sign-out from your Kobo account on the device (which will remove the database along with any books on your device that were downloaded from the Kobo store).

If you've signed out then you will have to redo the Kobo setup procedure.

Sent from my Pixel 4a using Tapatalk

Ned · 03-27-2021, 02:52 PM

thank you - I'll try that.
Can I not just delete the database myself instead?

PeterT · 03-27-2021, 03:42 PM

Quote:

Originally Posted by Ned

thank you - I'll try that.
Can I not just delete the database myself instead?

Sure you can. You'll still have to go through the setup stage

Sent from my Pixel 4a using Tapatalk

Ned · 03-28-2021, 06:13 AM

right, Ill do what you said in the first place then
thanks

Ned · 03-28-2021, 09:29 AM

Just to let you know that I signed out and in again as you recommended and it worked like a charm. (don't you hate it when people ask for advice and don't tell you how it turned out?)

Quite fast and painless really and it's left my firmware and patches alone too.

I don't use any of the measuring facilities or get books over the air on the Forma, just read ones I put on from Calibre so haven't lost anything that I can see.

And Calibre works normally with it now.

Thanks again

RowdyRuff · 03-28-2021, 11:04 AM

Relief all 'round; panic over!

rashkae · 03-28-2021, 02:38 PM

Just a note: Unless you have a faulty device, or are very unlucky with random sunspots, the most likely way for a problem like this crop up is the result of disonnecting the device from a PC without properly ejecting the media first.

03-27-2021, 01:17 PM	#1
Ned Ebook reader Posts: 390 Karma: 5899335 Join Date: Oct 2008 Location: York, England Device: Kobo Aura H2O (ed 2, v1), Kobo Forma, Kobo Libra 2	Kobo Forma will not connect to calibre Hello I get this error message when I plug my Forma in. calibre, version 3.44.0 ERROR: Error: Error communicating with device CorruptError: database disk image is malformed Traceback (most recent call last): File "site-packages/calibre/gui2/device.py", line 89, in run File "site-packages/calibre/gui2/device.py", line 512, in _books File "site-packages/calibre/devices/kobo/driver.py", line 1943, in books File "site-packages/calibre/devices/kobo/driver.py", line 1822, in get_bookshelvesforbook File "src/cursor.c", line 236, in resetcursor CorruptError: CorruptError: database disk image is malformed I have searched the forum and not found a solution. Restarting the device via the on/off button does not help. I did notice prior to this that I deleted a book on the Forma and it is still there, after confirming the deletion. Other than that noticed nothing odd. I manually deleted the book on my PC and that made no difference. Any suggestions please how to make it connect? Can I manually edit the database disk image to correct it?

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03-27-2021, 02:15 PM	#2
PeterT Grand Sorcerer Posts: 12,166 Karma: 73448616 Join Date: Nov 2007 Location: Toronto Device: Nexus 7, Clara, Touch, Tolino EPOS	If the database is corrupt them you can either restore from a recent backup, or sign-out from your Kobo account on the device (which will remove the database along with any books on your device that were downloaded from the Kobo store). If you've signed out then you will have to redo the Kobo setup procedure. Sent from my Pixel 4a using Tapatalk

03-27-2021, 02:52 PM	#3
Ned Ebook reader Posts: 390 Karma: 5899335 Join Date: Oct 2008 Location: York, England Device: Kobo Aura H2O (ed 2, v1), Kobo Forma, Kobo Libra 2	thank you - I'll try that. Can I not just delete the database myself instead?

03-28-2021, 06:13 AM	#5
Ned Ebook reader Posts: 390 Karma: 5899335 Join Date: Oct 2008 Location: York, England Device: Kobo Aura H2O (ed 2, v1), Kobo Forma, Kobo Libra 2	right, Ill do what you said in the first place then thanks

03-28-2021, 09:29 AM	#6
Ned Ebook reader Posts: 390 Karma: 5899335 Join Date: Oct 2008 Location: York, England Device: Kobo Aura H2O (ed 2, v1), Kobo Forma, Kobo Libra 2	Just to let you know that I signed out and in again as you recommended and it worked like a charm. (don't you hate it when people ask for advice and don't tell you how it turned out?) Quite fast and painless really and it's left my firmware and patches alone too. I don't use any of the measuring facilities or get books over the air on the Forma, just read ones I put on from Calibre so haven't lost anything that I can see. And Calibre works normally with it now. Thanks again

03-28-2021, 11:04 AM	#7
RowdyRuff Connoisseur Posts: 50 Karma: 386 Join Date: Jul 2018 Device: Kobo Mini, Kobo Aura HD, Kobo Forma, Nook ST	Relief all 'round; panic over!

03-28-2021, 02:38 PM	#8
rashkae Wizard Posts: 1,142 Karma: 5061953 Join Date: Jun 2011 Location: Ontario, Canada Device: Kobo Aura HD	Just a note: Unless you have a faulty device, or are very unlucky with random sunspots, the most likely way for a problem like this crop up is the result of disonnecting the device from a PC without properly ejecting the media first.