[beagleboard] no uart output after nand erase clean

Did you use the script from the ubuntu prebuilt image it is very straight forward and will have your board back up in less than 15 min

Where do I get this prebuilt image? And how shall I proceed? As I
said, I press and hold the user button, then apply power, but not a
single character comes out of the UART? What might prevent the
internal boot ROM from starting? What I also discovered is, that the
PMU STAT LED is off now. What does this mean?

Where do I get this prebuilt image? And how shall I proceed? As I
said, I press and hold the user button, then apply power, but not a
single character comes out of the UART? What might prevent the
internal boot ROM from starting? What I also discovered is, that the
PMU STAT LED is off now. What does this mean?

Run this script on your sd card,
http://elinux.org/BeagleBoardUbuntu#Upgrade_X-loader_and_U-boot

Then power on with user button pushed, it'll flash your nand with the
latest u-boot/mlo pulled from angstrom's git tree..

Regards,

Thanks Robert,
but I don't have a running ubuntu or other linux system running. I
just have various kinds of windows boxes. I do have linux experience
thow, but it's a long time ago. Is there a way to get this image
elsewhere and copy it from a windows os to sd?
Many thanks

Sorry, I don't have any windows boxes.. Your welcome to fire up
virtualbox and install any of the current distro's
ubuntu/debian/fedora..

Regards,

I have one system with ubuntu, but unfortunately without a mmc/sd
reader/writer. Will this also work, if I start ubuntu from cd? Or do I
have to setup a virtual PC?
You are very kind, thanks.

A virtual PC will work if your builtin mmc/sd card reader is usb based..

Otherwise, just install ubuntu on a portable 4/8gb usb stick...

Regards,

Robert,
I just made a bootable CD and after a few apt-get's I could get your
scripts and made a mmc and it works.
Thank you very much for your help.
I am from Paderborn, Germany. Where are you from? The world seems like
a small village. (german saying)

On Window XPSystems
Use a USB reader. Win32DisckImager can write xMc_4_25.img to SD. (use 7-zip).
Boot from BB got buffer I/O error dev mmcblk0 (SD device address) and mmcblk0p2 (ext 3?)
No filesystem could mount root. Tried: Ext3
Eventually Kernel Panic: Unable to mount root fs on unknown block.

I followed the procedure to set the two partitions and tried to format the partitions. (mkfs,msdod, mkfs.ext3)
I thought by putting the Command (m for help): [w] The partition table was changed from W95 FAT32 (LBA) to
a totally different list.
[t] used to be [c] W95 FAT32 (LBA) now they are

0 unassigned 4 SunOS usr 8 SunOS home 82 Linux swap
1 Boot 5 Whole disk 9 SunOS alt secto 83 Linux native
2 SunOS root .....
3 SunOS swap .....

Please let me know how to go back to the original W95 FAT32 (LBA).

Thanks,
Jim

It seems you are using unix-like environment. It might be rather simplier for you to use this bash script

http://www.angstrom-distribution.org/demo/beagleboard/mkcard.txt