부팅 후에 root@>dmesg 하고 치니 이런 종류의 애러 메시지가 나옵니다.  무슨 내용인지 좀 알려주세요..

on chunk 4143:0
**>>ecc error fix performed on chunk 4143:1
**>>Block 129 marked for retirement
**>>ecc error unfixed on chunk 60924:0
**>>ecc error unfixed on chunk 60924:1
**>>Block 1903 marked for retirement
**>>ecc error fix performed on chunk 19961:0
**>>ecc error fix performed on chunk 19961:1
**>>Block 623 marked for retirement
**>>ecc error fix performed on chunk 3613:0
**>>ecc error fix performed on chunk 3613:1
**>>Block 112 marked for retirement
**>>ecc error unfixed on chunk 3655:0
**>>ecc error unfixed on chunk 3655:1