I was exploring the logical structure of DOM and I found 4 partitions on it.
The first partition has 31 Mbyte of size, has an Ext3 type and contains the boot files (vmlinuz, initrd, etc.).
The third partition has the same size znd type, but it's clean.
But the second partition, located between first and third ones, is 450 Mbytes of UNALOCATED SPACE (!!!). I think that is my problem. I think it must not be unalocated space. I think this is destroed partition of Ext3 type too. I've been starting the recovery tool, and it found more than 100 lost files on that unalocated space.
Am I thinking right? Is it realy destroyed Ext3 partition? What can I do if it's true?
Thanks.
Please do not format this as it will void warranty. Try using a different system to verify that the DOM was not affected. If this does not work please send to support@open-e.com to obtain and RMA ASAP. Provide them serial number of the DOM and all other information to send you a new replacement.
I solved the problem!!!
It was something wrong with my DVD-drive from witch I tryed to update (or, may be, IDE cable or south bridge on motherboard or something else, I don't care).
I just unplugged the DOM from NAS and plugged it into my desktop PC. Then I boot up desktop PC from the update CD (same as before) and... "TA-DA!!!" - "Update successfull".
I returned the DOM back to NAS and now everything works perfectly.
Thanks to everyone, who tryed to help me!