Deshacer un RAID1

[erguerrero]

Hola
Una pregunta muy básica, ¿qué comando hay que usar para modificar el archivo "raid.conf" con el comando cat lo puedo ver pero no editar?

Y otra más compleja, ¿como tendríamos que editar dicho archivo si partimos directamente de un RAID 1 con dos discos?

ORIGINAL
[Global]
raidBitmap = 0x6
pd_21072D122583_Raid_Bitmap = 0x2
pd_5000CCA252D1C86E_Raid_Bitmap = 0x4
pd_5000CCA252D1F801_Raid_Bitmap = 0x4

[RAID_1]
uuid = 4b724157:01023f1a:244f6c57:58dec049
id = 1
partNo = 3
aggreMember = no
readonly = no
legacy = no
version2 = yes
overProvisioning = 10
deviceName = /dev/md1
raidLevel = 1
internal = 1
mdBitmap = 0
chunkSize = 512
readAhead = 0
stripeCacheSize = 0
speedLimitMax = 0
speedLimitMin = 0
data_0 = 170001, 21072D122583
dataBitmap = 1

[RAID_2]
uuid = 7f2ea8ee:23f9738e:1c357da0:6779acf9
id = 2
partNo = 3
aggreMember = no
readonly = no
legacy = no
version2 = yes
overProvisioning = 0
deviceName = /dev/md2
raidLevel = 1
internal = 1
mdBitmap = 0
chunkSize = 512
readAhead = 0
stripeCacheSize = 0
speedLimitMax = 0
speedLimitMin = 0
data_0 = 3, 5000CCA252D1C86E
data_1 = 4, 5000CCA252D1F801
dataBitmap = 3

COMO CREO TENDRÍA QUE QUEDAR

[Global]
raidBitmap = 0x6
pd_21072D122583_Raid_Bitmap = 0x2
pd_5000CCA252D1C86E_Raid_Bitmap = 0x4
pd_5000CCA252D1F801_Raid_Bitmap = 0x2

[RAID_1]
uuid = 4b724157:01023f1a:244f6c57:58dec049
id = 1
partNo = 3
aggreMember = no
readonly = no
legacy = no
version2 = yes
overProvisioning = 10
deviceName = /dev/md1
raidLevel = 1
internal = 1
mdBitmap = 0
chunkSize = 512
readAhead = 0
stripeCacheSize = 0
speedLimitMax = 0
speedLimitMin = 0
data_0 = 170001, 21072D122583
dataBitmap = 1

[RAID_2]
uuid = 7f2ea8ee:23f9738e:1c357da0:6779acf9
id = 2
partNo = 3
aggreMember = no
readonly = no
legacy = no
version2 = yes
overProvisioning = 0
deviceName = /dev/md2
raidLevel = 1
internal = 1
mdBitmap = 0
chunkSize = 512
readAhead = 0
stripeCacheSize = 0
speedLimitMax = 0
speedLimitMin = 0
data_0 = 4, 5000CCA252D1F801
dataBitmap = 3