Is a linux partition primary or extended?
One of my hard disks on my RAID 1 Linux system have failed. I've replaced it and I want to create the same partitions I have on the other hard disk. What is the linux command for determining is the partition primary or extended?
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Answers: 1
With the linux command sfdisk you can dump your partitions in sfdisk readable format:
(I copy this output from a debian installation)
Well, you don't need to understand if your partitions are primary or extended. You can directly copy partitions from healthy hard drive to the new one.
This code copies the partitions from harddrive A to harddrive B:
Then you can start your recovery with the command ( of course you need to pass correct md0 or md1 corresponding to your partitions):
(I copy this output from a debian installation)
> sfdisk -d /dev/sda
# partition table of /dev/sda
unit: sectors
/dev/sda1 : start= 1, size= 4209029, Id=fd
/dev/sda2 : start= 4209030, size=972559035, Id=fd
/dev/sda3 : start= 0, size= 0, Id= 0
/dev/sda4 : start= 0, size= 0, Id= 0
Well, you don't need to understand if your partitions are primary or extended. You can directly copy partitions from healthy hard drive to the new one.
This code copies the partitions from harddrive A to harddrive B:
sfdisk -d /dev/sda | sfdisk /dev/sdb
Then you can start your recovery with the command ( of course you need to pass correct md0 or md1 corresponding to your partitions):
mdadm /dev/md0 -a /dev/sdb1
mdadm /dev/md1 -a /dev/sdb2
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