DR800 Content 'dis-appeared'(?)

nurse_horrible · 10-05-2010, 10:37 PM

UPDATE: Solved!

Hi All,

I turned on my DR800 to read to find that I could move around with the UI (using CoolDragon's RC2? [installed June 2010] UI that ported some DR1000 pieces...so far works great no problems) but was not able to see any books, articles, files. Nothing. Under "SD card" it was empty. Under "Books", empty.

Hard reset x2 same result. Connecting via USB, I can see all the files listed in the correct file structure on my computer. After ejecting the DR800 from the computer, it takes about 2x as long to "index" the files (that are not viewable).

Also, running 2.0-rc3 from what was Irex and battery is at 85%.

Thoughts for a next step? I can't think of anything else except to reformat the sd card, but I have no idea if that would do anything. Does this sound more like a bad sd card (even though I can read it on the computer) or a bad something in the device thing?

Thanks for your help.

garywitscher · 10-05-2010, 11:02 PM

Whatever you decide to do, I'd suggest you make a backup of the files as you see them on your computer first.

Are you using a Windows computer or a Linux computer? Either way, make sure you refresh the screen when viewing these files on your computer. If they are still there, then make sure you "safely eject" the reader before you disconnect it from your computer.

Hope that helps.

nurse_horrible · 10-05-2010, 11:04 PM

Yes, using Windows (7) and already have a backup. I do always use the "safely eject" feature.

nurse_horrible · 10-06-2010, 12:05 AM

Solved! I deleted the "global" data base file in the root. I probably should have thought of that earlier, but the panic took over.

I guess if this isn't documented elsewhere (I couldn't find it by searching), then it's here now.

Mackx · 10-06-2010, 02:40 AM

That would also have been my advise. The DR maintains a sqlite3 database (global.db) that contains all folders and (viewable) files from the SD-card. When the DR boots, the complete SD-card is scanned to see if there are any changes w.r.t. the database (while "Indexing ..." is shown on the screen).
After that the UI only uses the database to show the content of the SD-card.
So if the global.db-file is corrupt, no file can be shown. Unfortunately, the DR does not issue a warning when a corrupt database is found.
A little bit on the side: each folder also contains another database (metadata.db) that contains document specific information that is not needed for the UI, like last-read-page, annotations and bookmarks. These can also get corrupt, resulting in page/annotations/bookmarks not being stored.

Do more people see the corruption of global.db or metadata.db? I wonder if the corruption is related to a manual reset or forced shutdown due to low-battery or if it happens during 'normal' usage.

nurse_horrible · 10-06-2010, 07:36 AM

Thanks, Mackx, for the explanation. It will help if I need to troubleshoot again.

I've noticed that deleting a metadata.db file has allowed me to open a file (usually older PDF on which I've annotated) that wasn't cooperating. This is the first time that I've encountered the global.db not acting as normal.

10-05-2010, 10:37 PM	#1
nurse_horrible Member Posts: 11 Karma: 368 Join Date: Aug 2010 Device: iRex DR800SG, Kobo Glo, Remarkable 1, Kobo Forma��, Kobo	Content 'dis-appeared'(?) UPDATE: Solved! Hi All, I turned on my DR800 to read to find that I could move around with the UI (using CoolDragon's RC2? [installed June 2010] UI that ported some DR1000 pieces...so far works great no problems) but was not able to see any books, articles, files. Nothing. Under "SD card" it was empty. Under "Books", empty. Hard reset x2 same result. Connecting via USB, I can see all the files listed in the correct file structure on my computer. After ejecting the DR800 from the computer, it takes about 2x as long to "index" the files (that are not viewable). Also, running 2.0-rc3 from what was Irex and battery is at 85%. Thoughts for a next step? I can't think of anything else except to reformat the sd card, but I have no idea if that would do anything. Does this sound more like a bad sd card (even though I can read it on the computer) or a bad something in the device thing? Thanks for your help. Last edited by nurse_horrible; 10-06-2010 at 12:05 AM. Reason: solved issue

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10-05-2010, 11:02 PM	#2
garywitscher Enthusiast Posts: 40 Karma: 10 Join Date: Apr 2010 Device: DR800SG	Whatever you decide to do, I'd suggest you make a backup of the files as you see them on your computer first. Are you using a Windows computer or a Linux computer? Either way, make sure you refresh the screen when viewing these files on your computer. If they are still there, then make sure you "safely eject" the reader before you disconnect it from your computer. Hope that helps.

10-05-2010, 11:04 PM	#3
nurse_horrible Member Posts: 11 Karma: 368 Join Date: Aug 2010 Device: iRex DR800SG, Kobo Glo, Remarkable 1, Kobo Forma��, Kobo	Yes, using Windows (7) and already have a backup. I do always use the "safely eject" feature.

10-06-2010, 12:05 AM	#4
nurse_horrible Member Posts: 11 Karma: 368 Join Date: Aug 2010 Device: iRex DR800SG, Kobo Glo, Remarkable 1, Kobo Forma��, Kobo	Solved! I deleted the "global" data base file in the root. I probably should have thought of that earlier, but the panic took over. I guess if this isn't documented elsewhere (I couldn't find it by searching), then it's here now.

10-06-2010, 02:40 AM	#5
Mackx Guru Posts: 999 Karma: 19985 Join Date: Dec 2008 Location: Netherlands Device: iRex DR1000S	That would also have been my advise. The DR maintains a sqlite3 database (global.db) that contains all folders and (viewable) files from the SD-card. When the DR boots, the complete SD-card is scanned to see if there are any changes w.r.t. the database (while "Indexing ..." is shown on the screen). After that the UI only uses the database to show the content of the SD-card. So if the global.db-file is corrupt, no file can be shown. Unfortunately, the DR does not issue a warning when a corrupt database is found. A little bit on the side: each folder also contains another database (metadata.db) that contains document specific information that is not needed for the UI, like last-read-page, annotations and bookmarks. These can also get corrupt, resulting in page/annotations/bookmarks not being stored. Do more people see the corruption of global.db or metadata.db? I wonder if the corruption is related to a manual reset or forced shutdown due to low-battery or if it happens during 'normal' usage.

10-06-2010, 07:36 AM	#6
nurse_horrible Member Posts: 11 Karma: 368 Join Date: Aug 2010 Device: iRex DR800SG, Kobo Glo, Remarkable 1, Kobo Forma��, Kobo	Thanks, Mackx, for the explanation. It will help if I need to troubleshoot again. I've noticed that deleting a metadata.db file has allowed me to open a file (usually older PDF on which I've annotated) that wasn't cooperating. This is the first time that I've encountered the global.db not acting as normal.

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