memory card problems

hnoto · 12-12-2009, 12:01 AM

I posted this problem last week in the 505 forum and got no responses. I'm not sure it is actually a Calibre issue, but I'm hoping someone can make a suggestion.

I have 3 different 2GB SD cards that I am using to separate my book collections by genre. The other day, I took out card#1 and inserted card#2 to read something. Then after I finished reading the book, I turned my 505 off and took out card#2 and reinserted card#1. When I turned my reader back on, all the collections were missing from card#1. I checked in Calibre, and sure enough all the books on the SD card had their tags removed.

I deleted all the books from the card and reinstalled them (as they still had their tags in my library.)

Today I took out card#1 and put in card#3, and found that it has ALSO lost all of its tags. GRRRRRRRRR.

In this early stage of organizing, it is not a big deal to delete and reinstall, but this is going to be really irritating if it continues.

Any suggestions? I'm running the most recent version of Calibre and none of my cards have more than 25MB on them.

itimpi · 12-12-2009, 04:22 AM

I got exactly the same thing happening when I tried using the Sony software to manage collections on my PRS-505. I suspect is something to do with the rebuilding of indexes that the PRS-505 does as soon as you rebuild a card.

The only way I got my collections back was to reformat the card and then re-download all the books to it from Calibre. There may well be an easier way, but that is my experience. I do not know if I could have simply deleted the books rather than re-formatting the card - but reformatting was quicker!

hnoto · 12-14-2009, 12:46 AM

Thanks for the response, I do appreciate knowing that I'm not the only one.

I can reformat, no problem, however, do you think that changing from one card to another is going to cause this to happen again? If so, that negates the usefulness of having separate HD cards.

brainycat · 12-16-2009, 04:55 PM

My understanding is that the tags are held in a database in the main memory... I'd imagine the Sony software can't distinguish between cards. So when the database info doesn't match the files on the card (which they won't when you replace the card) it's going to clean the database of the "old" info and replace it with the "new" info from the files on the currently installed card.

Calibre keeps the tags in it's own database on your PC, and updates the device's database as part of the process of copying the book files over.

user_none · 12-16-2009, 05:39 PM

Each card will have it's own database on it for the file on that card. The database in the main memory is only for the books in the main memory.

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12-12-2009, 12:01 AM	#1
hnoto Groupie Posts: 194 Karma: 177180 Join Date: Jun 2009 Location: Mesa, AZ Device: Sony PRS 505	memory card problems I posted this problem last week in the 505 forum and got no responses. I'm not sure it is actually a Calibre issue, but I'm hoping someone can make a suggestion. I have 3 different 2GB SD cards that I am using to separate my book collections by genre. The other day, I took out card#1 and inserted card#2 to read something. Then after I finished reading the book, I turned my 505 off and took out card#2 and reinserted card#1. When I turned my reader back on, all the collections were missing from card#1. I checked in Calibre, and sure enough all the books on the SD card had their tags removed. I deleted all the books from the card and reinstalled them (as they still had their tags in my library.) Today I took out card#1 and put in card#3, and found that it has ALSO lost all of its tags. GRRRRRRRRR. In this early stage of organizing, it is not a big deal to delete and reinstall, but this is going to be really irritating if it continues. Any suggestions? I'm running the most recent version of Calibre and none of my cards have more than 25MB on them.

12-12-2009, 04:22 AM	#2
itimpi Wizard Posts: 4,553 Karma: 950151 Join Date: Nov 2008 Device: Sony PRS-950, iphone/ipad (Marvin/iBooks/QuickReader)	I got exactly the same thing happening when I tried using the Sony software to manage collections on my PRS-505. I suspect is something to do with the rebuilding of indexes that the PRS-505 does as soon as you rebuild a card. The only way I got my collections back was to reformat the card and then re-download all the books to it from Calibre. There may well be an easier way, but that is my experience. I do not know if I could have simply deleted the books rather than re-formatting the card - but reformatting was quicker!

12-14-2009, 12:46 AM	#3
hnoto Groupie Posts: 194 Karma: 177180 Join Date: Jun 2009 Location: Mesa, AZ Device: Sony PRS 505	Thanks for the response, I do appreciate knowing that I'm not the only one. I can reformat, no problem, however, do you think that changing from one card to another is going to cause this to happen again? If so, that negates the usefulness of having separate HD cards.

12-16-2009, 04:55 PM	#4
brainycat PocketBook 302 FTW! Posts: 141 Karma: 398 Join Date: Oct 2009 Location: Seattle Device: Pocketbook 302, upgraded from PRS-600	My understanding is that the tags are held in a database in the main memory... I'd imagine the Sony software can't distinguish between cards. So when the database info doesn't match the files on the card (which they won't when you replace the card) it's going to clean the database of the "old" info and replace it with the "new" info from the files on the currently installed card. Calibre keeps the tags in it's own database on your PC, and updates the device's database as part of the process of copying the book files over.

12-16-2009, 05:39 PM	#5
user_none Sigil & calibre developer Posts: 2,487 Karma: 1063785 Join Date: Jan 2009 Location: Florida, USA Device: Nook STR	Each card will have it's own database on it for the file on that card. The database in the main memory is only for the books in the main memory.

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