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Durango	2011-02-12 , 13:02
Posts: 42 \| Thanked: 19 times \| Joined on Dec 2007	#21

Originally Posted by Switch_

Believe it or not 2 hours in the oven set at 180 - 200 deg C would reflow that enough to make the contacts good again. Did the same with an old 8800Ultra Superclocked graphics card once, worked a treat, but once a BGA is gone it's gone, end of really. The 8800 worked a treat for the next two months before it all went tits up again.

To be honest it looks like the BGA on that is too far gone anyways - reflow may cause shorting across the balls if you got a proper liquid reflow on it.

I know it can be done, but the thought of putting the whole board in the oven doesn't sit well with me. Certain components would definitely have to be removed (camera, keyboard sticker thing, but that would probably have to be replaced anyway...), plus I'm worried about flow it might cause at the other solder joints.

If anything, the existing solder on the chip/board would need to be cleaned away and it would have to be reballed. But it would not be easy.

Quote & Reply |

dylan1282529	2011-02-13 , 00:47
Posts: 11 \| Thanked: 0 times \| Joined on Feb 2011	#22

Dear durango i did what u said in ur file
every thing looks good

unit i reach this point

-5) To start moving /home and /opt over to your mSD card,
type the following:

sh copyhome.txt

-6) Type 'reboot' to reboot the N900

it tolds me invalid argument and after that the rootfs will be full only 1 kb left

i did all that until this point which is the most important for me?

what shall i do could u help me plz?

im askin how much the size of rootfs when u did it succesfully??

Quote & Reply |

Durango	2011-02-13 , 01:00
Posts: 42 \| Thanked: 19 times \| Joined on Dec 2007	#23

please type this in x-term:

Code:

sudo gainroot
df -h >> /media/mmc1/output.txt
sfdisk -l /dev/mmcblk1 >> /media/mmc1/output.txt

Then copy output.txt from your microSD card and attach it to your a post here so we can view the contents.

PS: please note that the "-l" after sfdisk is an L, and that "mmcblk" also has an L. Everything else is a one.

I'm not sure how much space I had left, I didn't actually delete the /home or opt folder on rootfs.. I think you should have at least 30 MB free.

Also, I made a few corrections to other parts of the documentation (nothing involving step 5) or 6) that you posted above), but in any case you should re-download the zip just to make sure everything you have is correct.

Last edited by Durango; 2011-02-13 at 01:36.

Quote & Reply |

dylan1282529	2011-02-13 , 01:49
Posts: 11 \| Thanked: 0 times \| Joined on Feb 2011	#24

this is the output

im very thankful for u helping me

thank u so much

i redownloaded the zip 3 times and and make it three time and same probelem

Attached Files

output.txt (1.4 KB, 151 views)

Quote & Reply |

Durango	2011-02-13 , 02:13
Posts: 42 \| Thanked: 19 times \| Joined on Dec 2007	#25

I'm not sure exactly where the problem is..

Try reflashing first to start again, and follow the instructions in my ReadMe.txt file, but in place of step 5), do this:

Code:

mount -t ext3 /dev/mmcblk1p2 /mnt
cp -a /home/* /mnt
mkdir /mnt/opt
cp -a /opt /mnt

tell me what step gives you the first error.
If for some reason it works this time (randomly..), type this after that^

Code:

sh setupnewhome.txt

I might not be able to reply anymore tonight because I really need to get some sleep, but I'll try checking up again in the morning.

Quote & Reply |

dylan1282529	2011-02-13 , 11:58
Posts: 11 \| Thanked: 0 times \| Joined on Feb 2011	#26

when i type mount -t ext3 /dev/mmcblk1p2 /mnt

it tolds me failed,invalid argument

i will be crazy really dont know what to do

im going to reflash the flash number 5

Quote & Reply |

michaaa62	2011-02-13 , 12:24
Posts: 2,102 \| Thanked: 1,937 times \| Joined on Sep 2008 @ Berlin, Germany	#27

So is /dev/mmcblk1p2 existing according to sfdisk -l ?
If existing is it listed by sfdisk to be type 83 ?
If existing is it formatted ext3?
Is the mount point /mnt existing ?
Please to avoid simple mistyping errors, try to copy'n'paste in a code box.
It is easier to read and mor accurate to get the full error output to understand what is going on, aka why it is failing at your device while it works on others.

Quote & Reply |

dylan1282529	2011-02-13 , 12:53
Posts: 11 \| Thanked: 0 times \| Joined on Feb 2011	#28

this is the output

Code:

Filesystem                Size      Used Available Use% Mounted on
rootfs                  227.9M    175.4M     48.3M  78% /
ubi0:rootfs             227.9M    175.4M     48.3M  78% /
tmpfs                     1.0M     96.0k    928.0k   9% /tmp
tmpfs                   256.0k     72.0k    184.0k  28% /var/run
none                     10.0M     72.0k      9.9M   1% /dev
tmpfs                    64.0M      4.0k     64.0M   0% /dev/shm
/dev/mmcblk1p1           11.9G     24.5M     11.9G   0% /media/mmc1

Disk /dev/mmcblk1: 483072 cylinders, 4 heads, 16 sectors/track
Units = cylinders of 32768 bytes, blocks of 1024 bytes, counting from 0

   Device Boot Start     End   #cyls    #blocks   Id  System
/dev/mmcblk1p1          1  390000  390000   12480000    c  W95 FAT32 (LBA)
/dev/mmcblk1p2     390001  450000   60000    1920000   83  Linux
/dev/mmcblk1p3     450001  483071   33071    1058272   82  Linux swap / Solaris
/dev/mmcblk1p4          0       -       0          0    0  Empty

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michaaa62	2011-02-13 , 20:21
Posts: 2,102 \| Thanked: 1,937 times \| Joined on Sep 2008 @ Berlin, Germany	#29

I suppose you never applied a file system to the 2nd partition of the external card, i think you did not create the swap as well. So please try first

Code:

sudo gainroot
mkfs.ext3 -m 1 -L home /dev/mmcblk1p2
tune2fs -c 0 -i 0 /dev/mmcblk1p2
mkswap -L swap /dev/mmcblk1p3
swapon /dev/mmcblk1p3

Then carry on with mount and copy like in the previous tries.

Last edited by michaaa62; 2011-10-16 at 06:07. Reason: Corrected a typo

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Durango	2011-02-13 , 20:44
Posts: 42 \| Thanked: 19 times \| Joined on Dec 2007	#30

Originally Posted by michaaa62

I suppose you never applied a file system to the 2nd partition of the external card, i think you did not create the swap as well.

That's what I was thinking too, but I wasn't sure. The partition tables were created, but not the actually file system. Everything else looked correct, though.

I guess in my situation, I didn't actually make the file system on the N900, but rather I created it with Ubuntu. Then I figured out that it was easier just to do the whole process through Ubuntu rather than x-term

Vielen Dank noch mal für Ihre Hilfe. Linux ist mir ganz neu und deswegen kenne ich alle die Besonderheiten nicht gut. Ich werde deinen neuen Code zu meine ReadMe beitragen, und ich muss auch noch den anderen von der letzten Seite probieren.