Adaptec SATA RAID FOR Manual page 31

Notes:
Before adding a new drive to an array, back up any data
contained on the new drive. Otherwise, all data will be lost.
If you stop the Build or Clear process on a RAID 1 or RAID
10 from ACU, you can restart it by pressing Ctrl+R.
A RAID 1 created using the Quick Init option may return
some data miscompares if you later run a consistency check.
This is normal and is not a cause for concern.
The ACU allows you to use drives of different sizes in a
RAID 1 or RAID 10. However, during a build operation ,
only the smaller drive can be selected as the source or first
drive.
When migrating from single volume to RAID 0, migrating
from a larger drive to a smaller drive is allowed. However,
the destination drive must be at least half the capacity of the
source drive.
Adaptec does not recommend that you migrate or build an
array on Windows dynamic disks (volumes), as it will result
in data loss.
!
Caution: Do not interrupt the creation of a RAID 0 using the
Migrate option. If you do, there is no way to restart, and
no way to recover the data that was on the source drive.
5 When you are finished, press Done.
Adding/Removing a Bootable Array
To make an array bootable:
1 From the Main menu, select Manage Arrays.
2 From the List of Arrays, select the array you want to make
bootable, then press Ctrl+B. An asterisk will appear next to the
bootable array.
3 To make the array nonbootable, select it then press Ctrl+B. The
asterisk will disappear next to the array indicating that it is
nonbootable.
Adaptec RAID Configuration Utility
5-5