Operation Manual

20 Copyright © Acronis International GmbH, 2002-2015
I/O errors are found on a dynamic disk. If a disk has errors, we recommended you to repair it as
soon as possible to avoid data loss.
 Offline
A dynamic disk is accessible in read only mode (if you switched it to offline previously), or not
accessible at all (corrupted or intermittently unavailable). You can make the disk that you
previously switched to offline, fully accessible—see Changing a disk status: offline to online.
 Foreign
This status occurs when you move a dynamic disk to your machine from another computer. To
access data on foreign disks, you have to add these disks to your machine's system
configuration—see Importing foreign disks (p. 50), or convert them to basic disks—see Disk
conversion: dynamic to basic.
 Missing
A dynamic disk is corrupted, powered down, or disconnected.
 Not Initialized
A disk does not contain a valid signature. After you install a new disk, the disk must be registered
in the operating system—see Disk initialization. Only then, you can create volumes on that disk.
To find out more information about disk statuses, please refer to the Disk status descriptions article
on the Microsoft website.
Important! For instructions explaining how to repair disks with an Online (Errors), Offline, or Missing status,
please refer to the Troubleshooting Disk Management article on the Microsoft website.
4.5.2 Volume statuses
Check a volume status to make sure the volume is accessible and works without problems. Volume
statuses appear both in the table and graphical panel.
Here are brief descriptions of the most common volume statuses:
 Healthy
A basic or dynamic volume is accessible and functioning correctly. This is the normal volume
status.
The Healthy status often has a number of substatuses that are displayed in the table view (in
parentheses) and in the graphical view (below the volume size and separated by a semicolon).
The System, Boot and Active substatuses are the most common and described in the Active,
system, and boot volumes (p. 13) section.
The healthy volume whose file system is corrupted is marked with the following icon:
 Failed
A dynamic volume (striped, or spanned) cannot be started automatically, or one of the
underlying disks is missing.
 Failed Redundancy
The data on a mirrored volume is no longer fault tolerant because one of the dynamic disks is not
online. You can access the volume until the remaining dynamic disk is online. To avoid data loss,
we recommend you to repair the volume as soon as possible.
To find out more information about disk statuses, please refer to the Volume status descriptions
article on the Microsoft website.
Important! For instructions explaining how to repair volumes with erroneous statuses, please refer to the
Troubleshooting Disk Management article on the Microsoft website.