On 09/04/2015 05:05 PM, Patrick Dupre wrote:
Thank Bob, it works
Then, It can reproduce the issue
under fdisk, I delete 2 partitions (6 and 7) and create 2 new ones
(with different size).
Then I get:
/dev/sdd1 4096 26617855 26613760 12.7G 7 HPFS/NTFS/exFAT
/dev/sdd2 26619705 38909429 12289725 5.9G 7 HPFS/NTFS/exFAT
/dev/sdd3 38909430 49142834 10233405 4.9G 7 HPFS/NTFS/exFAT
/dev/sdd4 49142835 976768064 927625230 442.3G 5 Extended
/dev/sdd5 49142898 98301734 49158837 23.5G 82 Linux swap / Solaris
/dev/sdd6 190466703 251915264 61448562 29.3G 83 Linux
/dev/sdd7 251915328 309267314 57351987 27.4G 83 Linux
/dev/sdd8 309270528 461461503 152190976 72.6G 83 Linux
/dev/sdd9 98304000 99327999 1024000 500M 83 Linux
/dev/sdd10 99330048 190466639 91136592 43.5G 83 Linux
Partition table entries are not in disk order.
Command (m for help): w
The partition table has been altered.
Calling ioctl() to re-read partition table.
Re-reading the partition table failed.: Device or resource busy
The kernel still uses the old table. The new table will be used at the next reboot or after you run partprobe(8) or kpartx(8).
Then, if I want to fix the partition order with fdisk expert f
it mess up every thing again!
What do I need to run?
Within the extended partition, whenever you delete any of the logical
partitions the numbering for all of the higher-numbered ones shifts
down. If you are using fdisk, you would need to delete partitions
6 through 10, then re-create them, being very careful that partitions
8, 9, and 10 are in exactly the same positions as before.
The easiest thing to do is to use sfdisk again, and just change the
entries for partitions 6 and 7:
###################################
unit: sectors
/dev/sde1 : start= 4096, size= 26613760, Id= 7
/dev/sde2 : start= 26619705, size= 12289725, Id= 7
/dev/sde3 : start= 38909430, size= 10233405, Id= 7
/dev/sde4 : start= 49142835, size=927625230, Id= 5
/dev/sde5 : start= 49142898, size= 49158837, Id=82
/dev/sde6 : start= 98304000, size= 1024000, Id=83, bootable
/dev/sde7 : start= 99330048, size= 91136592, Id=83
/dev/sde8 : start=190466703, size= 61448562, Id=83
/dev/sde9 : start=251915328, size= 57351987, Id=83
/dev/sde10: start=309270528, size=152190976, Id=83
###################################
Because fdisk was forcing 1MB alignment for the new partitions, it
left a little extra space between partitions 5 and 6, and again
between partitions 6 and 7. If you want to reclaim that space
(your other partitions aren't aligned anyway), you could gain
a little space for partition 7:
###################################
unit: sectors
/dev/sde1 : start= 4096, size= 26613760, Id= 7
/dev/sde2 : start= 26619705, size= 12289725, Id= 7
/dev/sde3 : start= 38909430, size= 10233405, Id= 7
/dev/sde4 : start= 49142835, size=927625230, Id= 5
/dev/sde5 : start= 49142898, size= 49158837, Id=82
/dev/sde6 : start= 98304000, size= 1024000, Id=83, bootable
/dev/sde7 : start= 99330048, size= 91136592, Id=83
/dev/sde8 : start=190466703, size= 61448562, Id=83
/dev/sde9 : start=251915328, size= 57351987, Id=83
/dev/sde10: start=309270528, size=152190976, Id=83
###################################
That leaves one 63-sector "track" between the partitions, which
is consistent with the way the other logical partitions are
arranged. The amount you gain in partition 7 isn't much, though,
just 4187 KB. Your choice.
Personally, I keep my partitions aligned at multiples of 8 sectors
(4K alignment) just in case I someday transfer the image to a drive
with 4KB physical sectors. Since the rest of your partitions aren't
aligned that way anyway, there's not much point in doing that for
just these two partitions.
--
Bob Nichols "NOSPAM" is really part of my email address.
Do NOT delete it.
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