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chotoipho
Mar 6th, 2013
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  1. [root@oc6351860106 Desktop]# fdisk -lu /dev/sdb
  2.  
  3. WARNING: GPT (GUID Partition Table) detected on '/dev/sdb'! The util fdisk doesn't support GPT. Use GNU Parted.
  4.  
  5.  
  6. Disk /dev/sdb: 4007 MB, 4007657472 bytes
  7. 124 heads, 62 sectors/track, 1018 cylinders, total 7827456 sectors
  8. Units = sectors of 1 * 512 = 512 bytes
  9. Sector size (logical/physical): 512 bytes / 512 bytes
  10. I/O size (minimum/optimal): 512 bytes / 512 bytes
  11. Disk identifier: 0x00000000
  12.  
  13. Device Boot Start End Blocks Id System
  14. /dev/sdb1 62 7826383 3913161 83 Linux
  15. [root@oc6351860106 Desktop]# dd
  16. dd ddate
  17. [root@oc6351860106 Desktop]# dd if=/dev/zero of=/dev/sdb
  18. ^C^C^C^C^C^C^C^C^C^C^C^C^C
  19. ^C
  20. [root@oc6351860106 Desktop]# ^C
  21. [root@oc6351860106 Desktop]# ^C
  22. [root@oc6351860106 Desktop]# dd if=/dev/zero of=/dev/sdb seek=7826456
  23. dd: writing to `/dev/sdb': No space left on device
  24. 1001+0 records in
  25. 1000+0 records out
  26. 512000 bytes (512 kB) copied, 0.178644 s, 2.9 MB/s
  27. [root@oc6351860106 Desktop]# dd if=/dev/zero of=/dev/sdb count=32
  28. 32+0 records in
  29. 32+0 records out
  30. 16384 bytes (16 kB) copied, 0.00561413 s, 2.9 MB/s
  31. [root@oc6351860106 Desktop]# fdisk -l
  32.  
  33. Disk /dev/sda: 500.1 GB, 500107862016 bytes
  34. 255 heads, 63 sectors/track, 60801 cylinders
  35. Units = cylinders of 16065 * 512 = 8225280 bytes
  36. Sector size (logical/physical): 512 bytes / 4096 bytes
  37. I/O size (minimum/optimal): 4096 bytes / 4096 bytes
  38. Disk identifier: 0x613bf01b
  39.  
  40. Device Boot Start End Blocks Id System
  41. /dev/sda1 * 1 64 512000 83 Linux
  42. Partition 1 does not end on cylinder boundary.
  43. /dev/sda2 64 60802 487873536 83 Linux
  44.  
  45. Disk /dev/mapper/luks-199cb07e-f024-45cf-aaeb-e4a6da7191cc: 499.6 GB, 499580403712 bytes
  46. 255 heads, 63 sectors/track, 60737 cylinders
  47. Units = cylinders of 16065 * 512 = 8225280 bytes
  48. Sector size (logical/physical): 512 bytes / 4096 bytes
  49. I/O size (minimum/optimal): 4096 bytes / 4096 bytes
  50. Disk identifier: 0x00000000
  51.  
  52.  
  53. Disk /dev/mapper/vg_oc1733755186-lv_root: 490.8 GB, 490767122432 bytes
  54. 255 heads, 63 sectors/track, 59665 cylinders
  55. Units = cylinders of 16065 * 512 = 8225280 bytes
  56. Sector size (logical/physical): 512 bytes / 4096 bytes
  57. I/O size (minimum/optimal): 4096 bytes / 4096 bytes
  58. Disk identifier: 0x00000000
  59.  
  60.  
  61. Disk /dev/mapper/vg_oc1733755186-lv_swap: 8589 MB, 8589934592 bytes
  62. 255 heads, 63 sectors/track, 1044 cylinders
  63. Units = cylinders of 16065 * 512 = 8225280 bytes
  64. Sector size (logical/physical): 512 bytes / 4096 bytes
  65. I/O size (minimum/optimal): 4096 bytes / 4096 bytes
  66. Disk identifier: 0x00000000
  67.  
  68.  
  69. Disk /dev/sdb: 4007 MB, 4007657472 bytes
  70. 124 heads, 62 sectors/track, 1018 cylinders
  71. Units = cylinders of 7688 * 512 = 3936256 bytes
  72. Sector size (logical/physical): 512 bytes / 512 bytes
  73. I/O size (minimum/optimal): 512 bytes / 512 bytes
  74. Disk identifier: 0x00000000
  75.  
  76. [root@oc6351860106 Desktop]# ls /dev/sd*
  77. /dev/sda /dev/sda1 /dev/sda2 /dev/sdb /dev/sdb1
  78. [root@oc6351860106 Desktop]# fdisk /dev/sdb
  79. Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
  80. Building a new DOS disklabel with disk identifier 0xd93b006a.
  81. Changes will remain in memory only, until you decide to write them.
  82. After that, of course, the previous content won't be recoverable.
  83.  
  84. Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)
  85.  
  86. WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
  87. switch off the mode (command 'c') and change display units to
  88. sectors (command 'u').
  89.  
  90. Command (m for help): d
  91. No partition is defined yet!
  92.  
  93. Command (m for help): w
  94. The partition table has been altered!
  95.  
  96. Calling ioctl() to re-read partition table.
  97. Syncing disks.
  98. [root@oc6351860106 Desktop]# ls /dev/sd*
  99. /dev/sda /dev/sda1 /dev/sda2 /dev/sdb
  100. [root@oc6351860106 Desktop]# fdisk /dev/sdb
  101.  
  102. WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
  103. switch off the mode (command 'c') and change display units to
  104. sectors (command 'u').
  105.  
  106. Command (m for help): n
  107. Command action
  108. e extended
  109. p primary partition (1-4)
  110. p
  111. Partition number (1-4): 1
  112. First cylinder (1-1018, default 1):
  113. Using default value 1
  114. Last cylinder, +cylinders or +size{K,M,G} (1-1018, default 1018):
  115. Using default value 1018
  116.  
  117. Command (m for help): w
  118. The partition table has been altered!
  119.  
  120. Calling ioctl() to re-read partition table.
  121. Syncing disks.
  122. [root@oc6351860106 Desktop]# ls /dev/sd*
  123. /dev/sda /dev/sda1 /dev/sda2 /dev/sdb [root@oc6351860106 Desktop]# mkfs.vfat /dev/sdb1
  124. mkfs.vfat 3.0.9 (31 Jan 2010)
  125. [root@oc6351860106 Desktop]# fdisk -l
  126.  
  127. Disk /dev/sda: 500.1 GB, 500107862016 bytes
  128. 255 heads, 63 sectors/track, 60801 cylinders
  129. Units = cylinders of 16065 * 512 = 8225280 bytes
  130. Sector size (logical/physical): 512 bytes / 4096 bytes
  131. I/O size (minimum/optimal): 4096 bytes / 4096 bytes
  132. Disk identifier: 0x613bf01b
  133.  
  134. Device Boot Start End Blocks Id System
  135. /dev/sda1 * 1 64 512000 83 Linux
  136. Partition 1 does not end on cylinder boundary.
  137. /dev/sda2 64 60802 487873536 83 Linux
  138.  
  139. Disk /dev/mapper/luks-199cb07e-f024-45cf-aaeb-e4a6da7191cc: 499.6 GB, 499580403712 bytes
  140. 255 heads, 63 sectors/track, 60737 cylinders
  141. Units = cylinders of 16065 * 512 = 8225280 bytes
  142. Sector size (logical/physical): 512 bytes / 4096 bytes
  143. I/O size (minimum/optimal): 4096 bytes / 4096 bytes
  144. Disk identifier: 0x00000000
  145.  
  146.  
  147. Disk /dev/mapper/vg_oc1733755186-lv_root: 490.8 GB, 490767122432 bytes
  148. 255 heads, 63 sectors/track, 59665 cylinders
  149. Units = cylinders of 16065 * 512 = 8225280 bytes
  150. Sector size (logical/physical): 512 bytes / 4096 bytes
  151. I/O size (minimum/optimal): 4096 bytes / 4096 bytes
  152. Disk identifier: 0x00000000
  153.  
  154.  
  155. Disk /dev/mapper/vg_oc1733755186-lv_swap: 8589 MB, 8589934592 bytes
  156. 255 heads, 63 sectors/track, 1044 cylinders
  157. Units = cylinders of 16065 * 512 = 8225280 bytes
  158. Sector size (logical/physical): 512 bytes / 4096 bytes
  159. I/O size (minimum/optimal): 4096 bytes / 4096 bytes
  160. Disk identifier: 0x00000000
  161.  
  162.  
  163. Disk /dev/sdb: 4007 MB, 4007657472 bytes
  164. 124 heads, 62 sectors/track, 1018 cylinders
  165. Units = cylinders of 7688 * 512 = 3936256 bytes
  166. Sector size (logical/physical): 512 bytes / 512 bytes
  167. I/O size (minimum/optimal): 512 bytes / 512 bytes
  168. Disk identifier: 0xd93b006a
  169.  
  170. Device Boot Start End Blocks Id System
  171. /dev/sdb1 1 1018 3913161 83 Linux
  172. [root@oc6351860106 Desktop]# mkfs
  173. mkfs mkfs.cramfs mkfs.ext3 mkfs.ext4dev mkfs.ntfs
  174. mkfs.btrfs mkfs.ext2 mkfs.ext4 mkfs.msdos mkfs.vfat
  175. [root@oc6351860106 Desktop]# fdisk /dev/sdb
  176.  
  177. WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
  178. switch off the mode (command 'c') and change display units to
  179. sectors (command 'u').
  180.  
  181. Command (m for help): clear
  182. DOS Compatibility flag is not set
  183.  
  184. Command (m for help): ^C
  185. [root@oc6351860106 Desktop]# ^C
  186. [root@oc6351860106 Desktop]# ^C
  187. [root@oc6351860106 Desktop]# ^C
  188. [root@oc6351860106 Desktop]# clear
  189.  
  190. [root@oc6351860106 Desktop]# fdisk -l
  191.  
  192. Disk /dev/sda: 500.1 GB, 500107862016 bytes
  193. 255 heads, 63 sectors/track, 60801 cylinders
  194. Units = cylinders of 16065 * 512 = 8225280 bytes
  195. Sector size (logical/physical): 512 bytes / 4096 bytes
  196. I/O size (minimum/optimal): 4096 bytes / 4096 bytes
  197. Disk identifier: 0x613bf01b
  198.  
  199. Device Boot Start End Blocks Id System
  200. /dev/sda1 * 1 64 512000 83 Linux
  201. Partition 1 does not end on cylinder boundary.
  202. /dev/sda2 64 60802 487873536 83 Linux
  203.  
  204. Disk /dev/mapper/luks-199cb07e-f024-45cf-aaeb-e4a6da7191cc: 499.6 GB, 499580403712 bytes
  205. 255 heads, 63 sectors/track, 60737 cylinders
  206. Units = cylinders of 16065 * 512 = 8225280 bytes
  207. Sector size (logical/physical): 512 bytes / 4096 bytes
  208. I/O size (minimum/optimal): 4096 bytes / 4096 bytes
  209. Disk identifier: 0x00000000
  210.  
  211.  
  212. Disk /dev/mapper/vg_oc1733755186-lv_root: 490.8 GB, 490767122432 bytes
  213. 255 heads, 63 sectors/track, 59665 cylinders
  214. Units = cylinders of 16065 * 512 = 8225280 bytes
  215. Sector size (logical/physical): 512 bytes / 4096 bytes
  216. I/O size (minimum/optimal): 4096 bytes / 4096 bytes
  217. Disk identifier: 0x00000000
  218.  
  219.  
  220. Disk /dev/mapper/vg_oc1733755186-lv_swap: 8589 MB, 8589934592 bytes
  221. 255 heads, 63 sectors/track, 1044 cylinders
  222. Units = cylinders of 16065 * 512 = 8225280 bytes
  223. Sector size (logical/physical): 512 bytes / 4096 bytes
  224. I/O size (minimum/optimal): 4096 bytes / 4096 bytes
  225. Disk identifier: 0x00000000
  226.  
  227.  
  228. Disk /dev/sdb: 4007 MB, 4007657472 bytes
  229. 124 heads, 62 sectors/track, 1018 cylinders
  230. Units = cylinders of 7688 * 512 = 3936256 bytes
  231. Sector size (logical/physical): 512 bytes / 512 bytes
  232. I/O size (minimum/optimal): 512 bytes / 512 bytes
  233. Disk identifier: 0xd93b006a
  234.  
  235. Device Boot Start End Blocks Id System
  236. /dev/sdb1 1 1018 3913161 83 Linux
  237. [root@oc6351860106 Desktop]# fdisk sdb
  238.  
  239. Unable to open sdb
  240. [root@oc6351860106 Desktop]# fdisk /dev/sdbsdb
  241.  
  242. Unable to open /dev/sdbsdb
  243. [root@oc6351860106 Desktop]# ^C
  244. [root@oc6351860106 Desktop]# fdisk /dev/sdb
  245.  
  246. WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
  247. switch off the mode (command 'c') and change display units to
  248. sectors (command 'u').
  249.  
  250. Command (m for help): t
  251. Selected partition 1
  252. Hex code (type L to list codes): L
  253.  
  254. 0 Empty 24 NEC DOS 81 Minix / old Lin bf Solaris
  255. 1 FAT12 39 Plan 9 82 Linux swap / So c1 DRDOS/sec (FAT-
  256. 2 XENIX root 3c PartitionMagic 83 Linux c4 DRDOS/sec (FAT-
  257. 3 XENIX usr 40 Venix 80286 84 OS/2 hidden C: c6 DRDOS/sec (FAT-
  258. 4 FAT16 <32M 41 PPC PReP Boot 85 Linux extended c7 Syrinx
  259. 5 Extended 42 SFS 86 NTFS volume set da Non-FS data
  260. 6 FAT16 4d QNX4.x 87 NTFS volume set db CP/M / CTOS / .
  261. 7 HPFS/NTFS 4e QNX4.x 2nd part 88 Linux plaintext de Dell Utility
  262. 8 AIX 4f QNX4.x 3rd part 8e Linux LVM df BootIt
  263. 9 AIX bootable 50 OnTrack DM 93 Amoeba e1 DOS access
  264. a OS/2 Boot Manag 51 OnTrack DM6 Aux 94 Amoeba BBT e3 DOS R/O
  265. b W95 FAT32 52 CP/M 9f BSD/OS e4 SpeedStor
  266. c W95 FAT32 (LBA) 53 OnTrack DM6 Aux a0 IBM Thinkpad hi eb BeOS fs
  267. e W95 FAT16 (LBA) 54 OnTrackDM6 a5 FreeBSD ee GPT
  268. f W95 Ext'd (LBA) 55 EZ-Drive a6 OpenBSD ef EFI (FAT-12/16/
  269. 10 OPUS 56 Golden Bow a7 NeXTSTEP f0 Linux/PA-RISC b
  270. 11 Hidden FAT12 5c Priam Edisk a8 Darwin UFS f1 SpeedStor
  271. 12 Compaq diagnost 61 SpeedStor a9 NetBSD f4 SpeedStor
  272. 14 Hidden FAT16 <3 63 GNU HURD or Sys ab Darwin boot f2 DOS secondary
  273. 16 Hidden FAT16 64 Novell Netware af HFS / HFS+ fb VMware VMFS
  274. 17 Hidden HPFS/NTF 65 Novell Netware b7 BSDI fs fc VMware VMKCORE
  275. 18 AST SmartSleep 70 DiskSecure Mult b8 BSDI swap fd Linux raid auto
  276. 1b Hidden W95 FAT3 75 PC/IX bb Boot Wizard hid fe LANstep
  277. 1c Hidden W95 FAT3 80 Old Minix be Solaris boot ff BBT
  278. 1e Hidden W95 FAT1
  279. Hex code (type L to list codes): c
  280. Changed system type of partition 1 to c (W95 FAT32 (LBA))
  281.  
  282. Command (m for help): w
  283. The partition table has been altered!
  284.  
  285.  
  286. Calling ioctl() to re-read partition table.
  287.  
  288. WARNING: Re-reading the partition table failed with error 16: Device or resource busy.
  289. The kernel still uses the old table. The new table will be used at
  290. the next reboot or after you run partprobe(8) or kpartx(8)
  291.  
  292. WARNING: If you have created or modified any DOS 6.x
  293. partitions, please see the fdisk manual page for additional
  294. information.
  295. Syncing disks.
  296. [root@oc6351860106 Desktop]#
  297. [root@oc6351860106 Desktop]#
  298. [root@oc6351860106 Desktop]# fdisk -l
  299.  
  300. Disk /dev/sda: 500.1 GB, 500107862016 bytes
  301. 255 heads, 63 sectors/track, 60801 cylinders
  302. Units = cylinders of 16065 * 512 = 8225280 bytes
  303. Sector size (logical/physical): 512 bytes / 4096 bytes
  304. I/O size (minimum/optimal): 4096 bytes / 4096 bytes
  305. Disk identifier: 0x613bf01b
  306.  
  307. Device Boot Start End Blocks Id System
  308. /dev/sda1 * 1 64 512000 83 Linux
  309. Partition 1 does not end on cylinder boundary.
  310. /dev/sda2 64 60802 487873536 83 Linux
  311.  
  312. Disk /dev/mapper/luks-199cb07e-f024-45cf-aaeb-e4a6da7191cc: 499.6 GB, 499580403712 bytes
  313. 255 heads, 63 sectors/track, 60737 cylinders
  314. Units = cylinders of 16065 * 512 = 8225280 bytes
  315. Sector size (logical/physical): 512 bytes / 4096 bytes
  316. I/O size (minimum/optimal): 4096 bytes / 4096 bytes
  317. Disk identifier: 0x00000000
  318.  
  319.  
  320. Disk /dev/mapper/vg_oc1733755186-lv_root: 490.8 GB, 490767122432 bytes
  321. 255 heads, 63 sectors/track, 59665 cylinders
  322. Units = cylinders of 16065 * 512 = 8225280 bytes
  323. Sector size (logical/physical): 512 bytes / 4096 bytes
  324. I/O size (minimum/optimal): 4096 bytes / 4096 bytes
  325. Disk identifier: 0x00000000
  326.  
  327.  
  328. Disk /dev/mapper/vg_oc1733755186-lv_swap: 8589 MB, 8589934592 bytes
  329. 255 heads, 63 sectors/track, 1044 cylinders
  330. Units = cylinders of 16065 * 512 = 8225280 bytes
  331. Sector size (logical/physical): 512 bytes / 4096 bytes
  332. I/O size (minimum/optimal): 4096 bytes / 4096 bytes
  333. Disk identifier: 0x00000000
  334.  
  335.  
  336. Disk /dev/sdb: 4007 MB, 4007657472 bytes
  337. 124 heads, 62 sectors/track, 1018 cylinders
  338. Units = cylinders of 7688 * 512 = 3936256 bytes
  339. Sector size (logical/physical): 512 bytes / 512 bytes
  340. I/O size (minimum/optimal): 512 bytes / 512 bytes
  341. Disk identifier: 0xd93b006a
  342.  
  343. Device Boot Start End Blocks Id System
  344. /dev/sdb1 1 1018 3913161 c W95 FAT32 (LBA)
  345. /dev/sdb1
  346. [root@oc6351860106 Desktop]# mkfs.vfat
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