corrupted sd card drives me nuts!!

[raspjuan]

the sd card get corrupted all the time!! I have to reinstalled the image iso all the time and have to configure the pi every time!!!

I have tried at least 5 different brand and different power adaptors!!!

it would be so nice if next generation of raspberry pi comes with a 4gb ssd drive and a sd port!!!

[RaTTuS]

what is the power as measured from TP1 TP2
what [exactly] are the PSU / power lead

[raspjuan]

I didn't make the measure because as a newbie I don't have the equipment to do so. however I indeed tried two different usb power adaptor from LG, one from samsung phone, one from amazon kindle ereader.

[mikey11]

I didn't make the measure because as a newbie I don't have the equipment to do so. however I indeed tried two different usb power adaptor from LG, one from samsung phone, one from amazon kindle ereader.

Although it is unfortunate, simply trying out other adapters won't solve your problems. Investing in a multimeter is cheap, I see them for about$10USD regularly.

Once you do that, you should try to find an adapter that puts out exactly 5V and has a capacity of 700ma to 1500ma. If you don't get your power issues sorted you will continue to have endless problems, SD card corruption being the least of them.

On an aside from power issues, overclocking is known to corrupt the SD cards. So make sure you aren't overclocking.

[GTR2Fan]

It sounds as though you're trying to use a charger as a power supply. There is never any guarantee that that's going to work as they are two different things. Use an actual 5V power supply unit (PSU) rated at 1A or over and your problems will most likely go away.

[jamesh]

It sounds as though you're trying to use a charger as a power supply. There is never any guarantee that that's going to work as they are two different things. Use an actual 5V power supply unit (PSU) rated at 1A or over and your problems will most likely go away.

I use a 0.85A Nook charger as a power supply, never had a problem....

[Jessie]

I agree with James. Iphone and ipad chargers are rock solid as well. The worst power supply I have used is the USB ports on my TV set.

[gsh]

How does the sd card get corrupted, what happens? I assume you are properly shutting down the Raspberry Pi and waiting for it to indicate it is ready to be powered off?

What version of Raspbian do you have (I assume very recent since you've reloaded it multiple times?)

Power is a possibility although I've never found a case to be caused by power (if there's enough to power the Pi then there should be enough to power the SDCard)... Then again I'm often proved wrong

Gordon

[GTR2Fan]

The point I was trying to make is that it can't be guaranteed that a charger will work as a PSU because it's not necessarily designed to output a steady, fixed voltage throughout its whole design current range. Any charger that does is, therefore, by definition a PSU. Any PSU that doesn't is, therefore, a lousy PSU, or possibly a charger masquerading as a PSU.

I was building my own 5V/1A regulated PSUs over 30 years ago for under £5 that stayed well within +/-0.1V across the entire design current range, so I was surprised to see just how awful some of the modern devices were that our own Trevor tested out not so long ago...

http://www.cpmspectrepi.webspace.virgin ... plies.html

I guess it goes to show that even carrying the title of 'PSU' doesn't necessarily count for much nowadays. I think people would be well advised to just stick to those on the recommended list.

[Richard-TX]

Here is a review of chargers aka power supplies.

http://www.righto.com/2012/10/a-dozen-u ... le-is.html

HP Touchpad charger is a good one as is the Apple.

[Lob0426]

Your USB cable could be a problem also, if your adapter uses one. Try to borrow a multimeter and test the voltage at the test points as stated above.

I use the shortest USB cable possible.

I also have found iPhone and iPad chargers to be very stable. The Adafruit adapter works well also.