Chapter 19: Managing Disks and Drives
Deleting Volumes
Occasionally, you may need to delete volumes that you no longer need. You might
also need to delete a volume if you want to extend or reconfigure another volume on
the same disk drive. Because deleting a volume erases all data on the volume, you
will want to copy or move all data on the volume and then verify the copy or move
prior to deleting the volume.
You can’t delete the system or boot volume. However, Windows Vista
will let you delete the active volume if it isn’t also designated as boot,
system, or both. Always check to ensure that the volume that you are
deleting doesn’t contain important data or files.
You can delete a volume by following these steps:
1. In Disk Management’s Graphical view, right-click the volume that you want to
delete and then select Delete Volume.
2. When prompted to confirm that you want to delete the volume, click Yes.
Recovering Volumes
As part of routine preventive maintenance for your disks, you should periodically
check disks for errors, defragment volumes, and clean up unnecessary temporary
files. Windows Vista provides separate utilities for each of these tasks; they are dis-
cussed in Chapter 20.
When you experience problems with a disk, you can use Disk Management to help
you troubleshoot. In most cases, simple volumes are easier to troubleshoot and
recover than spanned and striped volumes. With simple volumes, only one disk is
involved. If a disk with a simple volume has problems, you might see the Failed,
Online (Errors), or Unreadable status. You can correct most error status flags simply
by right-clicking the volume and selecting Reactivate Disk. If this doesn’t work, click
Rescan Disks on the Action menu. If a disk is listed as Failed or Unreadable and
won’t return to a Healthy status, you should replace the volume. If a disk is listed as
Online (Errors) and won’t return to an Online status without errors, you should
check the disk for errors, as discussed in Chapter 20.
Sometimes you might need to reboot your computer to get a disk back online. The
Online (Errors) status can also be an indicator of a failing disk, so if you see this sta-
tus several times on the same disk, check for problems with the drive, its controller,
and its cables. A bad power supply could also be the source of the problem, so make
sure that the drive has power. If you can’t fix the problem, you’ll need to replace the
disk. Shut down your computer before you try to examine your computer’s hardware.

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