Disco duro: sistema de archivos de solo lectura y blk_update_request: error de E/S, dev sda (LEER)

Question

Realicé dmesg --level=errpara obtener los errores que informaba mi disco. Recibí una lista larga (LARGA) de blk_update_request: error de E/S. Soy nuevo en Ubuntu o en cualquier sistema operativo basado en Linux. Entonces, ¿alguien puede interpretar el resultado del terminal dado y decirme el estado de mi disco y qué hacer al respecto? ¡Gracias de antemano!

[ 4767.244628] blk_update_request: I/O error, dev sda, sector 838765440 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
[ 5446.585078] ata1.00: exception Emask 0x0 SAct 0x18800000 SErr 0x0 action 0x0
[ 5446.585088] ata1.00: irq_stat 0x40000008
[ 5446.585095] ata1.00: failed command: READ FPDMA QUEUED
[ 5446.585108] ata1.00: cmd 60/08:b8:58:8c:38/00:00:2f:00:00/40 tag 23 ncq dma 4096 in
                        res 41/40:00:58:8c:38/00:00:2f:00:00/00 Emask 0x409 (media error) <F>
[ 5446.585113] ata1.00: status: { DRDY ERR }
[ 5446.585117] ata1.00: error: { UNC }
[ 5446.587251] blk_update_request: I/O error, dev sda, sector 792235096 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0
[ 5449.547647] ata1.00: exception Emask 0x0 SAct 0x80007000 SErr 0x0 action 0x0
[ 5449.547657] ata1.00: irq_stat 0x40000008
[ 5449.547664] ata1.00: failed command: READ FPDMA QUEUED
[ 5449.547676] ata1.00: cmd 60/08:70:58:8c:38/00:00:2f:00:00/40 tag 14 ncq dma 4096 in
                        res 41/40:00:58:8c:38/00:00:2f:00:00/00 Emask 0x409 (media error) <F>
[ 5449.547682] ata1.00: status: { DRDY ERR }
[ 5449.547686] ata1.00: error: { UNC }
[ 5449.549791] blk_update_request: I/O error, dev sda, sector 792235096 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
[ 5452.468874] ata1.00: exception Emask 0x0 SAct 0x1c0000 SErr 0x0 action 0x0
[ 5452.468884] ata1.00: irq_stat 0x40000008
[ 5452.468891] ata1.00: failed command: READ FPDMA QUEUED
[ 5452.468904] ata1.00: cmd 60/08:a0:58:8c:38/00:00:2f:00:00/40 tag 20 ncq dma 4096 in
                        res 41/40:00:58:8c:38/00:00:2f:00:00/00 Emask 0x409 (media error) <F>
[ 5452.468909] ata1.00: status: { DRDY ERR }
[ 5452.468913] ata1.00: error: { UNC }
[ 5452.470809] blk_update_request: I/O error, dev sda, sector 792235096 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0