[General Questions and Answers] InTheater:
This is a post, asking for some short of last chance of help, before calling the professionals

Yesterday, my phone went off (with quite a battery still) and when restarting a worrying message appear : "Impossible to mound SD card, it may be corrupted".

(and of course, with a outdated backup on my pc for weeks...)

I have read other posts, and nothing seems to help:

http://xdaforums.com/showthread.php?t=1917058

http://xdaforums.com/showthread.php?t=367912​

The microSD is a Transcend 16GB class4, not sure this info is key, but let it be know.

As Android doesn't load, I switch to PC, I plug the microSD into a USB adapter and go

First on Windows:

I try to load content, SD appear for few seconds and then disappear again.

On DISKPART >> list volume, The error message: "Virtual Disk Service Error: the object has been "

Try ZAR-X, and it keeps on "Enumerating devices, please wait", and does not do anything else

As things get ugly, I switch to linux (Ubuntu)

Trying to load on folder browser I got:

Unable to mount sd-ext

Error mounting /dev/sdc2 at /media/ubuntu/sd-ext:

Command line 'mount -t "ext3" -o "uhelper=udisk2,nodev,nosuid" "/dev/sdc2" "/media/ubuntu/sd-ext/" '

exited with non-zero exit status 32: wrong fs type, bad option, bad superblock on /dev/sdc2,

missing codepage or helper program, or other error

In some cases useful info is found in syslog -try dmesg | tail or so​

or:​

Error mounting /dev/sdc2 at /media/ubuntu/sd-ext:

Command-line `mount -t "ext3" -o "uhelper=udisks2,nodev,nosuid" "/dev/sdc2" "/media/ubuntu/sd-ext"'

exited with non-zero exit status 32: mount: /dev/sdc2 is not a valid block device​

or:​

Unable to open folder for 15GB Volume

Error when getting information for file '/media/ubuntu/ES64-FA45': No such file or directory​

went back to basis and run "sudo fdisk -l" and here I notice similar behiviour that windows, during the first 30 seconds or so after inserting the microSD/USB into the computer I it apear (among other disks) :

Disk /dev/sdc: 15.9 GB, 15931539456 bytes

255 heads, 63 sectors/track, 1936 cylinders, total 31116288 sectors

Units = sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x000d450f

Device Boot Start End Blocks Id System

/dev/sdc1 1 29617187 14808593+ c W95 FAT32 (LBA)

/dev/sdc2 29617188 30617187 500000 83 Linux

/dev/sdc3 30617188 31116287 249550 82 Linux swap / Solaris​

but after those 30 second, no trace of the usb in the fdisk-list

I wonder if there is something else I can do from my limited hardware availability, and even that following attempts could damage further the microSD

On mention posts, it is told about dd_rescue :

On Linux can try dd_rescue. It creates copy like normal dd but it does not abort on errors.

Copy card to file and then mount this file like drive

http://xdaforums.com/showpost.php?p=13196906&postcount=19​

is that something I could apply? OR something else I could do on my side?

or my last chance would be to put the SD in the hands of professionals and let do the job with open-heart-surgery-microscopy-tools?

(like those on : http://card-recovery.biz/us/service.php)

The data I have in the SD and not in the backup is enough valuable indeed to go that way, (on the other hand, house&personal insurance may also cover part of this cost)

----

By the way, two more things:

S-OFF, on one post, it is said:

S-OFF

This actually sounds a lot like what can happen to SD cards on some HTC devices if the S-OFF goes bad

(http://xdaforums.com/showthread.php?t=1917058)​

but I can't find what shrike1978 was refering to​

Real Time backup sync

Even I do regulary backups (or I intent to) I come to this situation.

Is there a tool/app/configuration that allows to have a real time synced copy of the contents on the SD (and preferable internal memory of mobile also) so chances of going broke are reduce to nearly ZERO ?

(In my PC I have of course a RAID, really bad there is no such options on Mobiles at cent costs on SD nowadays)​