mbr , fdisk, partprobe?

강제로 mbr을 갈아 엎으면
fdisk로 들어가서 정보가 보이는데
w를 해서 저장을 하지 않고  q로 나오면은 
커널에서도 변경된 파티션으로 인식하지 못하는 문제가 있다.

이를 해결하기 위해서는 멀 해야 하려나 -_- 

minimonk@devmini:~/nfs/Ver1.0.1.12$ sudo fdisk /dev/sdb Command (m for help): d Partition number (1-4): 1 Command (m for help): d Partition number (1-4): 2 Command (m for help): d Selected partition 3 Command (m for help): p Disk /dev/sdb: 1977 MB, 1977614336 bytes 61 heads, 62 sectors/track, 1021 cylinders, total 3862528 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x37168ace    Device Boot      Start         End      Blocks   Id  System Command (m for help): w The partition table has been altered! Calling ioctl() to re-read partition table. Syncing disks.

minimonk@devmini:~/nfs/Ver1.0.1.12$  sudo dd if=./mbr.imx283 of=/dev/sdb 1+0 레코드 들어옴 1+0 레코드 나감 512 바이트 (512 B) 복사됨, 0.00272973 초, 188 kB/초

minimonk@devmini:~/nfs/Ver1.0.1.12$ dmesg | tail [420014.024095] sd 38:0:0:0: [sdb] No Caching mode page found [420014.024112] sd 38:0:0:0: [sdb] Assuming drive cache: write through [420014.026165]  sdb:

minimonk@devmini:~/nfs/Ver1.0.1.12$ sudo fdisk /dev/sdb Command (m for help): q minimonk@devmini:~/nfs/Ver1.0.1.12$ dmesg | tail [420014.024095] sd 38:0:0:0: [sdb] No Caching mode page found [420014.024112] sd 38:0:0:0: [sdb] Assuming drive cache: write through [420014.026165]  sdb:

minimonk@devmini:~/nfs/Ver1.0.1.12$ sudo fdisk /dev/sdb Command (m for help): w The partition table has been altered! Calling ioctl() to re-read partition table. Syncing disks. minimonk@devmini:~/nfs/Ver1.0.1.12$ dmesg | tail [420091.481789] sd 38:0:0:0: [sdb] No Caching mode page found [420091.481807] sd 38:0:0:0: [sdb] Assuming drive cache: write through [420091.483255]  sdb: sdb1 sdb2 sdb3

음.. 그냥.. fdisk를 EOF로 해서 w 하도록 해야하나 -_-
2014/04/11 - [Linux] - 리눅스 쉘 스크립트 << EOF 를 이용해서 자동화 하기

partprobe 라는걸 해봤지만.. 안되네..

[링크 : http://2factor.tistory.com/49] 
[링크 : http://faq.hostway.co.kr/Linux_ETC/4528] 
[링크 : http://linux.die.net/man/8/partprobe]  

---
오!! 된다!!!

$ sudo hdparm -z /dev/sdb

/dev/sdb:

 re-reading partition table

minimonk@devmini:~/nfs/Ver1.0.1.12$ dmesg | tail

[437273.173713] sd 44:0:0:0: [sdb] No Caching mode page found

[437273.173729] sd 44:0:0:0: [sdb] Assuming drive cache: write through

[437273.175179]  sdb: sdb1 sdb2 sdb3

[링크: http://serverfault.com/questions/36038/reread-partition-table-without-rebooting ]