When I first started my RasPI with Raspbian Wheezy everything ran well. But when I installed a program, the System froze and I had to plug the power supply out.
When I tried to start it again, it did not want to boot anymore.
The red LED is on, the green one too, but very slightly. Trying to reinstall the .img file did not improve my situation.
The SD-Card is a 4gb class 4 card. I used Win32DiskMgr to load the image.
The PSU supports 850 mAh.
When I booted the first time, all devices were plugged in. (Mouse, Keyboard, HDMI, no LAN)
It doesn't matter if I use HDMI or Composite.
Does anyone have an idea how to fix it? Is it a hardware or a software problem?
Thanks in advance
GeoStreber.
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GeoStreber
- Posts: 4
- Joined: Wed Aug 01, 2012 12:23 pm
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mahjongg
- Forum Moderator
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Re: Can't boot again
Immediately after first boot do a controlled shutdown, so that the OS can finish its numerous small changes to the contents of the SD-card, otherwise the filing system internal to some brands of SD-cards may muck things up.
Only remedy to recover is to completely wipe the card, and program it again.
Shutdown from the GUI, or use the command
sudo shutdown -h now
Unlike a hard-disk, an SD-card has complex internal mechanisms to "fake" a normal random access system. This system for example makes sure that not always the same block of Flash memory is used to store things on. Some implementations are quite weak, in that they can get corrupted, even to the point that the card becomes unusable!
The most important thing is to do is to delete all the partitions on the card, so that the card is really empty for re-use again. You could try a partition editor (such as linux's "gparted") to do so.
Only remedy to recover is to completely wipe the card, and program it again.
Shutdown from the GUI, or use the command
sudo shutdown -h now
Unlike a hard-disk, an SD-card has complex internal mechanisms to "fake" a normal random access system. This system for example makes sure that not always the same block of Flash memory is used to store things on. Some implementations are quite weak, in that they can get corrupted, even to the point that the card becomes unusable!
The most important thing is to do is to delete all the partitions on the card, so that the card is really empty for re-use again. You could try a partition editor (such as linux's "gparted") to do so.
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GeoStreber
- Posts: 4
- Joined: Wed Aug 01, 2012 12:23 pm
Re: Can't boot again
Well I formated the card various times with gparted in Ubuntu and then reinstalled the .img file. But it still does not work at all. The screen doesn't get any signal with HDMI and Composite.
Re: Can't boot again
This tool should wipe any SD cardmahjongg wrote: The most important thing is to do is to delete all the partitions on the card, so that the card is really empty for re-use again. You could try a partition editor (such as linux's "gparted") to do so.
https://www.sdcard.org/downloads/formatter_3