Frequently asked questions

When and how often should I make images?

We recommend imaging on a regular basis (at least once a month). The more regularly it’s performed, the more up-to-date the data contained within those images will be. As a guiding rule, you should always image an intact system.

Which drives should I image?

You should generally image all drives, meaning the system drive (Windows), primarily Drive C, and all remaining data drives where private and business data, e.g. customer data, photo collections or music are stored.

Where should I store my image?

Don’t save the image on the same hard disk where the imaged drive is located. It should be ideally stored on an external hard disk or a CD/DVD.

I just bought myself a new computer. If I take a complete image of my old computer, can I restore it to my new one?

Restoring data drives is not a problem even with differing hardware. However, system partitions can only be restored on differing hardware using the Start CD and the integrated M.I.R.  You can read more about this in the chapter Settings for restoration on different hardware.

Do I have unlimited use of all functions with the trial version?

The trial version is not restricted – all program functions are fully operational. You should note, however, that restoring a system partition is only possible with the bootable O&O DiskImage CD, included when you purchase the product.

When do I need the bootable CD from O&O DiskImage?

You will need the Start CD, if you want to restore your entire computer or a system partition. The Start CD can also be used, if the operating system doesn’t start up anymore.

How do I save an image to CD/DVD?

  1. You must create an image file(s) and save it to your hard disk before you can write it to CD/DVD.
  2. When creating the image, under Drive imaging/Imaging options/File size, you should restrict the maximum image file size to the size of the intended removable medium where it will be saved.
  3. Should the image exceed the selected maximum file size, it will be split into several image files.
  4. You can then burn the image files to CD/DVD.
  5. Select Tools on the start page, then on Burn image file(s) and follow the instructions.

What do I do when my image is too big for a CD/DVD?

  1. If the Image you already saved to your hard disk is too big for the blank CD/DVD, you can, of course, still split the image file.
  2. Under Tools, open up Convert image file.
  3. Select the Image you wish to change by using Add.
  4. Merge incremental Images
  5. During conversion, one copy of the Image will be made while the original remains unchanged.

I have split the image and saved it on various storage volumes (CD/DVD).

I want to:

  • restore this image
  • display drives from the image
  • use the image as a base image for incremental imaging purposes
  • merge incremental images
  • convert the image file

Before you go ahead with any of the above named steps, we strongly advise you to save all parts of the Image in a folder on your hard disk. Please ensure the folder is not on the drive to where you wish to restore the Image. Once you have done this you can complete the steps outlined above by simply following the instructions in the corresponding chapters of the User’s Guide.

Can I continue working during the imaging process?

You can continue working and making changes without any problem.

The working memory buffer is however restricted. You can see how much is available in the Memory buffer display. See Chapter “Lock a Drive”.

Can I change an existing image?

Under Tools you can find the function Convert Image File. This enables you to change certain properties and contents of an existing image.

I have created an image of several drives. Can I extract the image from just one of those drives and store it separately?

Follow the instructions below:

  1. Under Tools select Convert image file.
  2. Select the image using Add and then select the drive you wish to separately image.
  3. Click Open and select a drive. After confirming with OK, click Start.
  4. After confirming with (OK) click on Start.
  5. The old image remains unaltered.

What is the difference between a clone and an image?

Using the Clone drive function, you can make a 1:1 copy of a drive including all its stored data, without producing any image files. The storage volume /drive is saved directly without compression. The advantage of a clone as opposed to an image is that the detour through an image file is avoided. You can access the clone of a drive without having to restore the drive. You do, however, require a lot more storage space for a clone than for an image.

Important! When cloning your drive (source drive) the selected target drive will be overwritten. You should therefore save your copy on an external hard disk, either in an unused region or overwrite a previously selected drive purely for this purpose.

Why are temporary files created?

If you leave a drive unlocked during an imaging because, for instance, you want to continue working on that drive, the original status will be “cached”, i.e. stored in the working memory buffer. “Temporary files” are created in the process. The working memory buffer space is, however, limited. You can see how much space is available by looking at the memory buffer display.

What is the advantage of an incremental image?

An incremental image normally has a smaller data volume as a base image. In addition, you can ascertain the differences, more precisely, the changes made since the base image was created.

My incremental image is not smaller than my base image. Where does this file come from?

This can occur if you have, for example, defragmented your computer in the meantime. The newly structured file segments will then be recognized as “changes” and imaged as new files.

What does “Drive cannot be locked” mean? Does this affect the data imaging?

Because of the constantly running system processes, your system partitions cannot normally be locked. You get this notification even when you want to image a data drive and this is directly i
ntegrated into the system processes. The notification doesn’t generally have an effect on the imaging process; this is still able to be run without a problem. To be totally sure, shut down all running system applications, e.g. defragmentation or cloning processes, before imaging.

While imaging, O&O DiskImage reports that the target volume is too small although the source drive is smaller than the target disk. What is the reason for this?

Make sure you haven’t selected the entire hard disk as your source. Example:

You have a hard disk with 100GB that is divided into two partitions:

  • System partition (20GB)
  • Data partition (80GB)
  • While trying to save the system partitions on an external 40GB hard disk, O&O DiskImage reports that the target volume is too small.

By just making a check, you can select the system partitions as your only source, and not the entire hard disk.

What do I do if O&O DiskImage takes very long to start, or doesn’t even start at all?

Please read the note about System requirements and make sure you’re using the latest versions of your drivers.

During restoration, O&O DiskImage created a new temporary file on my hard disk. Where does this file come from?

Before creating an image, O&O DiskImage normally deposits a number of metadata in a local file. This data is needed by O&O DiskImage in order to create the image. The file will be included in the imaging to assure consistency in the image. This file will normally be automatically removed during restoration.

Under certain circumstances, it’s possible that another action of the operating system or the user will prevent this temporary file from being deleted. This will then result in the file remaining undeleted in the system. You can, however, delete this temporary file without any risk.

Why are partitions that weren’t imaged displayed when mounting an image in Explorer?

In addition to saving data from the partition being imaged, O&O DiskImage also needs to save information about the disk on which that partition was originally located. All of this is required for mounting an image, converting it into a virtual disk, or performing any future restoration. Of course, there will also be information included about partitions that were not imaged. When mounting an image, just as when using a virtual hard disk after conversion from an image, Microsoft Windows uses this information to recognize that there were originally multiple partitions on the disk, and attempts to integrate them into the system. Because information/data about these partitions is missing, it’s not possible to assign them to any file system. As a result, partitions that weren’t imaged will be displayed as RAW, i.e., non-formatted.

Frequently asked questions