Frequently Asked Questions

Disk Image Backup

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What is a disk image?
Does disk image perform incremental backup?
Can I restore disk image backup from one drive to another on the same computer or on a different computer?
I don't want to restore disk image. Can I still be able to access the contents from the disk image?
How to create a Disk Image Backup?
How to restore an image file?
I have created a disk image file from my PC, using the IDrive application. Can I access it on another OS like Mac, Linux, etc?
Can I restore disk images to a CD/DVD or to USB hard drive?
Do I need to format the USB drive to store a Disk Image Backup file?
How do I create boot disk and recover my drive using disk image backup file?
I have a backup (Disk Image file) of 100 GB partition drive. After restoring it to a 500 GB partition drive, the partition seems to be truncated to 100 GB. Why?
At the time of running bootrec command, why am I getting the ‘Element not found’ message for bootrec.exe /fixboot command execution?
How do I restore the OEM disk image to dissimilar hardware?
I’m getting an error message - ‘Disk structure is corrupted and unreadable’ after executing the rebuildbcd command while restoring the disk image to new hard disk. What should I do?
After restore, I am getting the following error message - ‘Disk is not accessible or is corrupted’. What should I do?
I performed disk image restore operation (on dissimilar hardware) for Windows 7/Windows server 2008 R2 successfully, but am still unable to boot the operating system. Why?
Why am I getting "Not enough memory resources are available to process this command" message, after booting to WinRE command line environment?
Windows Operating system is not booting after I tried to perform DiskImage restore to dissimilar hardware/similar hardware. What should I do?
 
 
 
 

What is a disk image?

Disk image is a copy of the entire contents of a storage drive. The disk image represents the content just the way it appears on the original drive, including both data and structure information.

To perform Disk Image backup, there are some system requirements to be met.

Does disk image perform incremental backup?

Yes, disk image supports incremental backup. Once an initial backup is done, later on only changed blocks of the disk will be backed up during incremental backup.

Can I restore disk image backup from one drive to another on the same computer or on a different computer?

Restoring drive on different computer (Dissimilar hardware):

You can restore disk image backup on any drive by using IDrive disk Image restore option on a different computer.

Click here to know the recovery details on different computer (dissimilar hardware).

Note: On different computer (dissimilar hardware), you can restore the Operating System.


Restoring drive on same computer:

You can restore disk image backup on any drive by using IDrive disk Image restore option on the same computer.

Click here to know how IDrive disk image restore option works.

Note: On same computer you can perform Operating System restore as well.

I don't want to restore disk image. Can I still be able to access the contents from the disk image?

Yes, you can easily access your entire OS and its contents on a different computer using IDrive disk image, in case your hardware crashed. Learn more on how to recover the OS Drive on a different computer.

To access your data on a different computer, mount the disk image backup file to the new computer and restore files/folders accordingly.

To mount disk image backup file on Windows,

  • Download and install the OSFmount Build from the below link http://www.osforensics.com/tools/mount-disk-images.html
  • Browse the image file which has to be mounted in the OSFMount wizard.
  • Mounted disk image will be shown as different drive (with new Letter) in the new computer.
  • Save the required data from the new mounted drive.

How to create a Disk Image Backup?

Using Disk Image, you can backup your entire drive to a secondary location, like external hard drive.

To create Disk Image Backup,

  1. Launch the IDrive desktop application.
  2. Log in with Username and Password. If you had set a private encryption key for your account, then provide the private key.
  3. Click 'Disk Image Backup'. The Disk Image Backup screen appears.
  4. Select the drive you wish to backup.
  5. From the 'Select the location for creating Disk Image' drop-down menu, select the drive on which you wish to create the image file.


  6. Select 'Online Backup' or 'Local Backup'.
  7. Click 'Schedule Now'. The Scheduler screen appears.
  8. Create a schedule for performing regular disk image backups and click 'Save Changes'.

How to restore an image file?

To restore a backed up image file,

  1. Launch the IDrive application.
  2. Log in with your Username and Password. If you had set a private encryption key for your account, then provide the private key.
  3. Click 'Disk Image Backup'. The Disk Image Backup screen appears.
  4. Navigate to the 'Restore Disk Image Data' tab.
  5. Click to select the disk image (.img) file to be restored and select a drive for restoring it.


  6. Click Restore Now.

    Note: Restoring a disk image overwrites all the existing drive contents with the image file.

I have created a disk image file from my PC, using the IDrive application. Can I access it on another OS like Mac, Linux, etc?

Disk image file created using the IDrive application is cross-platfrom compatible, which means you can access the image file created from PC, on Mac, Linux, etc. To access it, simply Mount the disk image file to the specific Operating System.

Can I restore disk images to a CD/DVD or to USB hard drive?

Yes, you can directly restore a Disk Image Backup file to a USB drive or burn it to a CD/DVD.

Note:

  • Restoring a disk image overwrites all the existing drive contents with the image file.
  • On the same computer you can perform Operating System restore as well. Click here to know the recovery details on different computer (hardware).

Do I need to format the USB drive to store a Disk Image Backup file?

No. However, it is recommended that you confirm that the data in your USB drive is either copied to another location or no longer needed, as restoring an image file will format all the data on your USB drive.

How do I create boot disk and recover my drive using disk image backup file?

The Disk Image Backup in IDrive can help you recover from an OS crash within minutes! All you need is,

I have a backup (Disk Image file) of 100 GB partition drive. After restoring it to a 500 GB partition drive, the partition seems to be truncated to 100 GB. Why?

Disk Image recovery will maintain the information and the structure (including partition) intact, during restore. Hence, it truncates the 500 GB partition down to 100 GB. To avoid such situation, you should resize the partition before restoring the disk image file on it.

At the time of running bootrec command, why am I getting the ‘Element not found’ message for bootrec.exe /fixboot command execution?

Before running the bootrec command, ensure that the MBR partition is active.

To make MBR partition active,

  1. Enter DISKPART in command line window
  2. Enter the commands below:
    DISKPART> list volumeA List of volumes present will appear
    DISKPART> select volume 2Select the volume where MBR is restored from the MBR.img image
    DISKPART> activePartition is now made active
    DISKPART> exitExit the disk part

Perform the bootrec /fixBoot again to fix the issue.

How do I restore the OEM disk image to dissimilar hardware?

You can use the OEM recovery disk to make partition of disk image (MBR/GPT, OS disk image) and restore the MBR/GPT and OS disk image.

I’m getting an error message - ‘Disk structure is corrupted and unreadable’ after executing the rebuildbcd command while restoring the disk image to new hard disk. What should I do?

This error message appears for Windows users when their computer tries to access a partition of its hard drive that has a corrupted or unreadable disk structure, thus resulting in a failed attempt to access it.

You need restore the MBR/GPT partition to correct the disk structure and run the rebuildbcd command again.

After restore, I am getting the following error message - 'Disk is not accessible or is corrupted'. What should I do?

To fix the issue, run the chkdsk with flags /f/r/x.

  1. Open command prompt with admin privilege.
  2. Enter chkdsk E: /f/r/x. Replace E with your drive letter which has issues.

I performed disk image restore operation (on dissimilar hardware) for Windows 7/Windows server 2008 R2 successfully, but am still unable to boot the operating system. Why?

To boot Windows 7/Windows server 2008 R2, you must have the same motherboard configuration as the original backed up operating system drive.

Why am I getting "Not enough memory resources are available to process this command" message, after booting to WinRE command line environment?

This message is displayed because the WinRE Bootable Media is not created using Windows 8.1 ISO. To resolve this issue, extract the Install.wim file from Windows 8.1 ISO and create a WinRE Bootable Media again.

Windows Operating system is not booting after I tried to perform DiskImage restore to dissimilar hardware/similar hardware. What should I do?

We recommend that you 'repair' the Operating system from Windows operating system bootable disk to boot the OS.

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