Comment 33 for bug 569680

This problem is also present in Kubuntu 10.10 CD Installation.

I tried to install linux-image-2.6.37-3-generic (from natty) but i get:
Generating grub.cfg ...
error: cannot read from `/dev/sda'.
..but i am using /dev/sda...

Anyway this is my error messages while booting:

 3465.904743] ata1.00: status: { DRDY ERR }
[ 3465.904746] ata1.00: error: { UNC }
[ 3465.912495] ata1: nv_mode_filter: 0x1f39f&0x1f39f->0x1f39f, BIOS=0x1f000 (0xc5c5c0c0) ACPI=0x1f01f (30:30:0x1f)
[ 3465.912503] ata1: nv_mode_filter: 0x1f39f&0x1f39f->0x1f39f, BIOS=0x1f000 (0xc5c5c0c0) ACPI=0x1f01f (30:30:0x1f)
[ 3465.928461] ata1.00: configured for UDMA/66
[ 3465.944521] ata1.01: configured for UDMA/66
[ 3465.944553] sd 0:0:0:0: [sda] Unhandled sense code
[ 3465.944557] sd 0:0:0:0: [sda] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[ 3465.944562] sd 0:0:0:0: [sda] Sense Key : Medium Error [current] [descriptor]
[ 3465.944568] Descriptor sense data with sense descriptors (in hex):
[ 3465.944571] 72 03 11 04 00 00 00 0c 00 0a 80 00 00 00 00 00
[ 3465.944581] 00 00 00 4a
[ 3465.944585] sd 0:0:0:0: [sda] Add. Sense: Unrecovered read error - auto reallocate failed
[ 3465.944592] sd 0:0:0:0: [sda] CDB: Read(10): 28 00 00 00 00 4a 00 00 05 00
[ 3465.944602] end_request: I/O error, dev sda, sector 74
[ 3465.944610] Buffer I/O error on device sda1, logical block 11
[ 3465.944615] Buffer I/O error on device sda1, logical block 12
[ 3465.944619] Buffer I/O error on device sda1, logical block 13
[ 3465.944622] Buffer I/O error on device sda1, logical block 14
[ 3465.944626] Buffer I/O error on device sda1, logical block 15
[ 3465.944651] ata1: EH complete
[ 3469.421881] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 3469.421889] ata1.00: BMDMA stat 0x64
[ 3469.421894] ata1.00: failed command: READ DMA
[ 3469.421903] ata1.00: cmd c8/00:05:4a:00:00/00:00:00:00:00/e0 tag 0 dma 2560 in
[ 3469.421904] res 51/40:00:4a:00:00/00:00:00:00:00/e0 Emask 0x9 (media error)
[ 3469.421908] ata1.00: status: { DRDY ERR }
[ 3469.421911] ata1.00: error: { UNC }

@Matthew: how can i see what controller i am using?