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I believe that when I upgrade grub I am supposed to re-run it. |
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|
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I would like to keep the same configuration I have know but am not |
| 4 |
sure if I installed grub in the MBR (I dual boot windows since it is |
| 5 |
often needed when calling Dell Support). |
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|
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I believe that I do have grub in the mbr, but wish to confirm it so |
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executed an od to confirm. |
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|
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Here is my disk layout (a one disk laptop) |
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|
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ajglap ~ # fdisk -l |
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|
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Disk /dev/sda: 100.0 GB, 100030242816 bytes |
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255 heads, 63 sectors/track, 12161 cylinders |
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Units = cylinders of 16065 * 512 = 8225280 bytes |
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Disk identifier: 0x08000000 |
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|
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Device Boot Start End Blocks Id System |
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/dev/sda1 1 6 48163+ de Dell Utility |
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/dev/sda2 * 7 1963 15716352 7 HPFS/NTFS |
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/dev/sda3 1963 1975 98683+ 83 Linux |
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/dev/sda4 1976 12161 81819045 5 Extended |
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/dev/sda5 1976 2098 987966 82 Linux swap / Solaris |
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/dev/sda6 2099 4531 19543041 83 Linux |
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/dev/sda7 4532 5991 11727418+ 83 Linux |
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/dev/sda8 5992 8424 19543041 83 Linux |
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/dev/sda9 8425 10857 19543041 83 Linux |
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ajglap ~ # |
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|
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Here is an od of the mbr |
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|
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ajglap ~ # dd if=/dev/sda ibs=512 count=1 | od -c --address-radix=d |
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1+0 records in |
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1+0 records out |
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0000000 353 H 220 320 274 \0 | 216 300 216 330 276 \0 | 277 \0 |
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0000016 006 271 \0 002 374 363 244 P h 034 006 313 373 271 004 \0 |
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0000032 275 276 \a 200 ~ \0 \0 | \v 017 205 020 001 203 305 020 |
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0000048 342 361 315 030 210 V \0 U 306 F 021 005 306 F 003 002 |
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512 bytes (512 B) copied, 1.8159e-05 s, 28.2 MB/s |
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0000064 377 \0 \0 001 \0 \0 \0 \0 002 372 220 220 366 302 200 |
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0000080 u 002 262 200 352 Y | \0 \0 1 300 216 330 216 320 274 |
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0000096 \0 373 240 @ | < 377 t 002 210 302 R 276 177 } |
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0000112 350 4 001 366 302 200 t T 264 A 273 252 U 315 023 Z |
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0000128 R r I 201 373 U 252 u C 240 A | 204 300 u 005 |
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0000144 203 341 001 t 7 f 213 L 020 276 005 | 306 D 377 001 |
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0000160 f 213 036 D | 307 004 020 \0 307 D 002 001 \0 f 211 |
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0000176 \ \b 307 D 006 \0 p f 1 300 211 D 004 f 211 D |
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0000192 \f 264 B 315 023 r 005 273 \0 p 353 } 264 \b 315 023 |
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0000208 s \n 366 302 200 017 204 352 \0 351 215 \0 276 005 | 306 |
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0000224 D 377 \0 f 1 300 210 360 @ f 211 D 004 1 322 210 |
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0000240 312 301 342 002 210 350 210 364 @ 211 D \b 1 300 210 320 |
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0000256 300 350 002 f 211 004 f 241 D | f 1 322 f 367 4 |
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0000272 210 T \n f 1 322 f 367 t 004 210 T \v 211 D \f |
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0000288 ; D \b } < 212 T \r 300 342 006 212 L \n 376 301 |
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0000304 \b 321 212 l \f Z 212 t \v 273 \0 p 216 303 1 333 |
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0000320 270 001 002 315 023 r * 214 303 216 006 H | ` 036 271 |
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0000336 \0 001 216 333 1 366 1 377 374 363 245 037 a 377 & B |
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0000352 | 276 205 } 350 @ \0 353 016 276 212 } 350 8 \0 353 |
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0000368 006 276 224 } 350 0 \0 276 231 } 350 * \0 353 376 G |
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0000384 R U B \0 G e o m \0 H a r d D |
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0000400 i s k \0 R e a d \0 E r r o r \0 |
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0000416 273 001 \0 264 016 315 020 254 < \0 u 364 303 \0 \0 \0 |
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0000432 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \b \0 \0 \0 001 |
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0000448 001 \0 336 376 ? 005 ? \0 \0 \0 G x 001 \0 200 036 |
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0000464 031 006 \a 376 377 377 \0 200 001 \0 \0 240 337 001 \0 376 |
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0000480 377 377 203 376 377 377 \0 341 001 367 002 003 \0 \0 376 |
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0000496 377 377 005 376 377 377 367 " 344 001 J 353 300 \t U 252 |
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0000512 |
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|
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Am I right that seeing `GRUB' in bytes 383-386 (decimal) is proof that |
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I did install grub in the MBR? |
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|
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thanks, |
| 75 |
allan |
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|
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-- |
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