Dingoonity.org

hi! yesterday I could install dingux an also access to it. I could play some games as well. But now I can't. When booting I get an error that says something like "unable to open filesystem for writing any change to system will not persist".
The only thing I did was to transfer some rom files to the miniSD card using native browser.
What can I do?

Thanks a lot

or if your PC runs linux you can try fixing it from the command line by typing something along the lines of:

dosfsck -a /dev/sdb1         (Where /dev/sdb1 is your SD card!)

I've fixed my card a couple of times this way when dingux has become corrupted. It's worth a try before reformatting and copying everything.

Thank you guys. I formated the sd card and now is working
I have a liveCD of linux. would you please explain me to me what you mean I can do on  linux to fix the problem?
It takes 40 minutes to fill again the Sdcard with the local pack and I've done it 3 times already.
By the way, mame4all tells me there's no rom but I did put some roms i the roms directory. I checked the compatibility list also and tried with wonderboy game and still it is not recognized. (they are all zipped)

Are they correctly NAMED?
You can't re-name the .zips.  They have to be the name that MAME is expecting to find.
Check your gameslist.txt file against what the name of your .zip is

Sometimes, a zip on one place could be named, say, "galaga1.zip" and even though everything is right, MAME expects to find "galaga.zip" and so won't find your ROM.

MAME is very picky, you MUST match the file name it expects to see.

Re: the Linux command: I believe the Windows counterpart (scandisk/chkdsk) would function equivalently.

I personally rely on formatting, because the filesystem is mounted read-only because there's something wrong with it. Although a scan&fix might help recovering it enough to boot, I still wouldn't be certain that all files come out of it unharmed.

I understand your point of view. It is the only way to be 100% certain that everything on the card is as it should be.

I keep a backup of my entire Dingux installation and tend to backup saves I care about to my PC - or just to the dingoo's internal memory if I'm on the move (I use the native browser to copy the save file if I'm playing to complete a game).

But as far as dingux corruption goes, a full reformat plus three quarters of an hour spent writing everything back (I have an 8gig card) seems a lot of wear and tear on the card. And it is all to fix a problem that I know will reoccur sooner or later. To be honest i don't even know what the maximum number of writes to a microSD card is but I'm not in any real hurry to test! 

I've repaired my sd card with dosfsck twice now. The first time dosfsck actually named a file in a dmenu folder that was corrupt so I just copied the whole of dmenu back onto the card from my backup and everything worked. The second time it reclaimed some space. I don't know what from, but if a few files are missing some data somewhere on my sd card it hasn't caused me a problem yet. I admit I'm not over-worried though as I'm not about to write my first novel on dingux.

I'll keep backing up my save games - anything else I can replace if I have to!

I always use chkdsk on windows to fix the corruption, never had any problem, the syntax is

chkdsk [n]: /x /f /r

[n] is the letter of the drive, the sd card is inserted.

This ought to be stickied!!
Would be helpful to have this in an easily findable place on this website.