I have an open vpn server running on my Ubuntu server 14.04.I took the backup of hard disk /dev/xvda
(which includes the boot files) to an img file using the dd
command.
Machine A
dd if=/dev/xvda of=/backup/backup.img
Then it is transferred to another Linux machine(Ubuntu 14.04) and restored it to /dev/xvdm
disk.
Machine B
dd if=/data-backup/backup.img of=/dev/xvdm
After restoring, fdisk command showing both disks.
# fdisk -l
Disk /dev/xvda: 8589 MB, 8589934592 bytes
255 heads, 63 sectors/track, 1044 cylinders, total 16777216 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: 0x00000000
Device Boot Start End Blocks Id System
/dev/xvda1 * 16065 16771859 8377897+ 83 Linux
Disk /dev/xvdm: 10.7 GB, 10737418240 bytes
255 heads, 63 sectors/track, 1305 cylinders, total 20971520 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: 0x00000000
Device Boot Start End Blocks Id System
/dev/xvdm1 * 16065 16771859 8377897+ 83 Linux
After rebooting the server system is booted with /dev/xvdm1
not with /dev/xvda1
. Also the partition /dev/xvda1
is unmounted. So how or where can I adjust the server boot order if two partitions contains the boot files.