Как изменить местоположение установки личинки

Проблема точно как описана здесь. Согласно ответу от той личинки потока местоположение должно быть изменено от /dev/md126p1 кому: /dev/md126. То, что я не вполне понимаю, - то, как сделать это во время процесса установки. Системой является Сервер Ubuntu 16.04.1 LTS.

# lsblk -o name,mountpoint,label,size,fstype
    NAME                MOUNTPOINT LABEL      SIZE FSTYPE
sda                                     931.5G
├─sda1                         oblsud:0   487M linux_raid_member
│ └─md0             /boot                 972M ext4
├─sda2                                      1K
├─sda5                         oblsud:1  11.2G linux_raid_member
│ └─md1             [SWAP]               22.3G swap
├─sda6                         oblsud:2  93.1G linux_raid_member
│ └─md2                                 186.1G LVM2_member
│   └─system-rootfs /                   186.1G ext4
└─sda7                         oblsud:3 826.7G linux_raid_member
  └─md3                                   1.6T LVM2_member
    └─storage-home  /home                 1.6T ext4
sdb                                     931.5G
├─sdb1                         oblsud:0   487M linux_raid_member
│ └─md0             /boot                 972M ext4
├─sdb2                                      1K
├─sdb5                         oblsud:1  11.2G linux_raid_member
│ └─md1             [SWAP]               22.3G swap
├─sdb6                         oblsud:2  93.1G linux_raid_member
│ └─md2                                 186.1G LVM2_member
│   └─system-rootfs /                   186.1G ext4
└─sdb7                         oblsud:3 826.7G linux_raid_member
  └─md3                                   1.6T LVM2_member
    └─storage-home  /home                 1.6T ext4
sdc                                     931.5G
├─sdc1                         oblsud:0   487M linux_raid_member
│ └─md0             /boot                 972M ext4
├─sdc2                                      1K
├─sdc5                         oblsud:1  11.2G linux_raid_member
│ └─md1             [SWAP]               22.3G swap
├─sdc6                         oblsud:2  93.1G linux_raid_member
│ └─md2                                 186.1G LVM2_member
│   └─system-rootfs /                   186.1G ext4
└─sdc7                         oblsud:3 826.7G linux_raid_member
  └─md3                                   1.6T LVM2_member
    └─storage-home  /home                 1.6T ext4
sdd                                     931.5G
├─sdd1                         oblsud:0   487M linux_raid_member
│ └─md0             /boot                 972M ext4
├─sdd2                                      1K
├─sdd5                         oblsud:1  11.2G linux_raid_member
│ └─md1             [SWAP]               22.3G swap
├─sdd6                         oblsud:2  93.1G linux_raid_member
│ └─md2                                 186.1G LVM2_member
│   └─system-rootfs /                   186.1G ext4
└─sdd7                         oblsud:3 826.7G linux_raid_member
  └─md3                                   1.6T LVM2_member
    └─storage-home  /home                 1.6T ext4
sr0                                      1024M


# parted -l
Model: ATA WDC WD10EZEX-60M (scsi)
Disk /dev/sda: 1000GB
Sector size (logical/physical): 512B/4096B
Partition Table: msdos
Disk Flags:

Number  Start   End     Size    Type      File system     Flags
 1      1049kB  512MB   511MB   primary                   boot, raid
 2      513MB   1000GB  1000GB  extended
 5      513MB   12.5GB  12.0GB  logical   linux-swap(v1)  raid
 6      12.5GB  113GB   100GB   logical                   raid
 7      113GB   1000GB  888GB   logical                   raid


Model: ATA WDC WD10EZEX-60M (scsi)
Disk /dev/sdb: 1000GB
Sector size (logical/physical): 512B/4096B
Partition Table: msdos
Disk Flags:

Number  Start   End     Size    Type      File system     Flags
 1      1049kB  512MB   511MB   primary                   boot, raid
 2      513MB   1000GB  1000GB  extended
 5      513MB   12.5GB  12.0GB  logical   linux-swap(v1)  raid
 6      12.5GB  113GB   100GB   logical                   raid
 7      113GB   1000GB  888GB   logical                   raid


Model: ATA WDC WD10EZEX-60M (scsi)
Disk /dev/sdc: 1000GB
Sector size (logical/physical): 512B/4096B
Partition Table: msdos
Disk Flags:

Number  Start   End     Size    Type      File system     Flags
 1      1049kB  512MB   511MB   primary                   boot, raid
 2      513MB   1000GB  1000GB  extended
 5      513MB   12.5GB  12.0GB  logical   linux-swap(v1)  raid
 6      12.5GB  113GB   100GB   logical                   raid
 7      113GB   1000GB  888GB   logical                   raid


Model: ATA WDC WD10EZEX-60M (scsi)
Disk /dev/sdd: 1000GB
Sector size (logical/physical): 512B/4096B
Partition Table: msdos
Disk Flags:

Number  Start   End     Size    Type      File system     Flags
 1      1049kB  512MB   511MB   primary                   boot, raid
 2      513MB   1000GB  1000GB  extended
 5      513MB   12.5GB  12.0GB  logical   linux-swap(v1)  raid
 6      12.5GB  113GB   100GB   logical                   raid
 7      113GB   1000GB  888GB   logical                   raid


Model: Linux device-mapper (linear) (dm)
Disk /dev/mapper/storage-home: 1775GB
Sector size (logical/physical): 512B/4096B
Partition Table: loop
Disk Flags:

Number  Start  End     Size    File system  Flags
 1      0.00B  1775GB  1775GB  ext4


Model: Linux device-mapper (linear) (dm)
Disk /dev/mapper/system-rootfs: 200GB
Sector size (logical/physical): 512B/4096B
Partition Table: loop
Disk Flags:

Number  Start  End    Size   File system  Flags
 1      0.00B  200GB  200GB  ext4


Model: Linux Software RAID Array (md)
Disk /dev/md0: 1019MB
Sector size (logical/physical): 512B/4096B
Partition Table: loop
Disk Flags:

Number  Start  End     Size    File system  Flags
 1      0.00B  1019MB  1019MB  ext4


Model: Linux Software RAID Array (md)
Disk /dev/md1: 24.0GB
Sector size (logical/physical): 512B/4096B
Partition Table: loop
Disk Flags:

Number  Start  End     Size    File system     Flags
 1      0.00B  24.0GB  24.0GB  linux-swap(v1)


Error: /dev/md2: unrecognised disk label
Model: Linux Software RAID Array (md)
Disk /dev/md2: 200GB
Sector size (logical/physical): 512B/4096B
Partition Table: unknown
Disk Flags:

Error: /dev/md3: unrecognised disk label
Model: Linux Software RAID Array (md)
Disk /dev/md3: 1775GB
Sector size (logical/physical): 512B/4096B
Partition Table: unknown
Disk Flags: