Hello, Thank you very much for your help. I apreciate your time. The hard disk has faced the problem again today. The problem is that the disk exhibit the same errors (with different numbers) at boot.
hda: dma_intr: status=0x51 { DriveReady SeekComplete Error } hda: dma_intr: error=0x40 { UncorrectableError }, LBAsect=43778543, high=2, low=10224111,> sector=43778543 debian-remix kernel: end_request: I/O error, dev hda, sector 43778543 the system then remounts read-only and the system cannot write anything. I have just downloaded the Seagate diagnostics tool "SeaTools". It is a bootable CDROM iso image. I will run it and will post the results here. Regards. Ramiro