Can't open config.txt with nano error reading.

[kamhagh]

I just tried Overclocking my pi. it got too far so i edit the config.txt on my laptop's card reader

after getting it to 1300 it worked! but I can't open the config.txt anymore it gives me this

Error reading lock file /boot/.config.txt.swap: Not enough data read

the weird thing is that the oc first made it fast (1340) then i lowered it just to be safe. then it was much slower, I returned it to stock now. it's still slower. I restarted and ran again and now it's fast again. it's like my sysbench is giving me random results!
I tried overvoltage=6 and it didn't get hot. i had to remove the plug because it froze

but anyway. How can i fix this problem for now?

EDIT: ok my disk bench is now down to 14mb/s from 23.3mb/s wth have i done? What have i done ( have i damaged my pi/sdcard ???

[Dis93]

Don't overclock your Pi.
Why are you overclocking? Do you have heatsink and/or fan?

[kamhagh]

Don't overclock your Pi.
Why are you overclocking? Do you have heatsink and/or fan?

yes I have a heatsink. It didn't go over 80.
when i started overclocking i did it with a better ehatsink. It nevr got more then 60-70 degrees

It was a bit slow and I did it for fun too have I damages my pi? Or SD cardss.....

[stderr]

It was a bit slow and I did it for fun too have I damages my pi? Or SD cardss.....

Rather than asking here, since how would anyone here know? Rather than that, get another sdcard, properly prepare it at stock settings and see if it runs right.

[kamhagh]

It was a bit slow and I did it for fun too have I damages my pi? Or SD cardss.....

Rather than asking here, since how would anyone here know? Rather than that, get another sdcard, properly prepare it at stock settings and see if it runs right.

OK. I don't have any other SD cards so I'll just reinstall ubuntu mate again. Maybe just accessing config.txt on the laptop messed its permissions or something

[Dis93]

Re-image your card, leave settings at stock, see how that goes.

[drgeoff]

Using the laptop try deleting the .config.txt.swap file. Then edit config.txt back to working values.

[kamhagh]

Using the laptop try deleting the .config.txt.swap file. Then edit config.txt back to working values.

Well I already re installed it. It works now but the speed is still 15.5mb/S from 23.3 it used to be. It was lagging too I assume all raspberry pies lag! Why is my SD card still slower? Is it possible to damage SD card/Raspberry pi with the OC I did? My OSMC lagged a bit too (on another 8gb SP elite SD card) my Ubuntu mate is on 16gb sandisk ultra