MobileRead Forums - View Single Post - Glo Calibre/Kobo Glo "error communicating with device."

davidfor · 09-04-2013, 11:20 PM

If you do upgrade, then I would like to see the before and after copies of the file. That should give an idea of the differences.

I don't think anything in the file has changed in calibre for a long time. The main affect would be if you added a lot of custom columns to calibre as these get put into this file.

And the different firmware versions shouldn't affect the file. It is created by calibre from the list of what it thinks is on the device. So, whatever the driver reads from the database. That part of the driver isn't changing and isn't different for the different firmware versions on the Glo.

Thinking about it, there is one possible reason for a size difference. If you have the options to show recommendations and previews selected, then these will also be recorded in the file. Just after a factory reset, there will be very few recommendations. But, I just did a check. 307 recommendations added about 1MB to the file size. To get to 18MB but that, you would need thousands.

09-04-2013, 11:20 PM	#62
davidfor Grand Sorcerer Posts: 24,905 Karma: 47303826 Join Date: Jul 2011 Location: Sydney, Australia Device: Kobo:Touch,Glo, AuraH2O, GloHD,AuraONE, ClaraHD, Libra H2O; tolinoepos	If you do upgrade, then I would like to see the before and after copies of the file. That should give an idea of the differences. I don't think anything in the file has changed in calibre for a long time. The main affect would be if you added a lot of custom columns to calibre as these get put into this file. And the different firmware versions shouldn't affect the file. It is created by calibre from the list of what it thinks is on the device. So, whatever the driver reads from the database. That part of the driver isn't changing and isn't different for the different firmware versions on the Glo. Thinking about it, there is one possible reason for a size difference. If you have the options to show recommendations and previews selected, then these will also be recorded in the file. Just after a factory reset, there will be very few recommendations. But, I just did a check. 307 recommendations added about 1MB to the file size. To get to 18MB but that, you would need thousands.