Well, English is not my native language so I hope that the readers of this post forgive me about bad writing.

Yesterday, I shutted down my computer normally and this morning, when I tried to boot it it got slower than normally when starting enterprise volume managemente system and started to type errors like this one

buffer I/O error on device dm-1, logical block 3

The only thing that changes at that errors is the number of the logical block...

I suppose that it is a hard disk error, but I´m not sure.. and also don´t know how to repair it.

My mother board is an asus a7n8x deluxe edition and I have a pair of hard disks, seagate, one with 80 gb and the other one with 120 gb. The processor is and amd xp athlon 3200+. I have 512 mb of DDR ram, at 400 mhz. The graphics card is an Ati 9600 xt.

Thanks

Does the computer ever finish booting, or are these errors preventing the computer running ?
If the computer eventually runs after showing the errors, then you can run checks and repairs on the volumes concerned. You would have to read the Enterprise Volume Management Systems documents for that though ( http://evms.sourceforge.net/ ). I am familiar with Logical Volume Management on FC4, but I doubt the commands would be even similar. If the computer doesn't finish booting, you might try using a rescue cd to fix the errors, or try booting into single user mode.

well, i booted a live cd and run gparted.. It showed a partition with unknown format.. so I deleted it and know the computer boots perfectly, but thanks