The guide – How To Repair Rohos Disk – is a part of Rohos Disk Help files. The Rohos guide will help you to: Create Password Reset File, recover encrypted disk if you lost your password, Restore encrypted partition on a USB flash drive in a case of data corruption, Check Rohos disk for errors, recover files from corrupted Rohos disk.

Create password reset file

(backup copy of cryptographic keys for disk encryption)

The program allows creating a password reset file for Rohos Disk. If you forget the disk password you will be able to set a new password and get access to the disk by means of this file. It makes no difference how many times the disk password has been changed, this file is created once.

How to create password reset file:

  • Connect Rohos disk
  • On the program’s main window click on Tools… and choose the “Create a password reset file” link
  • You should specify the path to the disk image file in the open dialog. If the main disk is on, this path will be set automatically. You may also specify whatever disk image you want to have
  • Then enter disk password and press Create a backup
  • A spare copy will be created

Warning: The backup file must be kept secret, otherwise another user can use it to access the encrypted disk.

Disk recovering

Warning: Make sure the disk is turned off before it’s recovered.

To recover disk password:

  • Go to Restore disk link in Rohos Disk main window, Help menu

In the opened dialog you should click on:

  1. Specify the path to disk -container file (RDI).
  2. Specify path to disk backups file (*.RDX file – for disk password recovering) RDX file must be created by the user beforehand.
  3. Press OK – There will be an attempt to turn on the disk.

  1. To recover the disk, if it was damaged:

    • Go to Restore disk link in Rohos Disk main window, Help menu

    In the opened dialog you should click on:

    1. Specify the path to disk -container file (RDI).
    2. Specify path to disk backups file (.rdi1).

      The path C:\Users\Account Name\AppData\Local\Rohos opens a predefined folder. (only Account Name changes in the path indicated).
      RDI1 file is created automatically by the program with the disk image.
      The program automatically opens the folder that contains your backup file(s) *.rdi1. It increases the probability for success on the condition that restoring back up file from the computer Rohos disk was created.
      Click on the appropriate *.rdi1 file and then Open. All *.rdi1 files in the backup folder indicate size inside the file name. It may help you to recognize your file to restore the disk image.
    3. Enter in password input line the current disk password
    4. Press OK – There will be an attempt to turn on the disk.

The disk can turn on but it won’t be formatted – DO NOT FORMAT IT because it can lead to data loss.

If the disk is not formatted it means that you’ve used the wrong *.RDX or *.RDI1 file from the wrong file image.

If you recover the main disk and it is still shown as unformatted:

– try to open your favorite disk with the “Connect more…” command.

Restoring Encrypted part on the USB flash drive

When you can’t find the disk’s image on the USB you should look for the Rohos image in folder F:\_rohos\ (where F is the letter of your USB flash drive). Usually, the disk image file looks like rdisk*rdi (its size is from 10 Mb to several Gbs). The Folder _rohos is hidden and in the file explorer, it’s not seen. In order to open it you should:

  • Open menu Start -> press Win + R
  • Type in “F:\_rohos\ (or any other letter of your USB flash drive) and click OK

If you restore the disk, then in the dialog box *RDI1, *RDX in the file name field you should choose F:\_rohos\ and then press Enter to be directed to the Folder.

Disk checking

Open Rohos Disk Encryption main window, connect your encrypted Rohos disk and click on Tools… and choose “Check disk” (as shown on the screenshot below). By means of this command, the disk will be checked for File-System errors. It helps in case the disk doesn’t turn on or it is shown as unformatted. This command can be used only when the encrypted disk is on.

This command forcibly runs the Windows Check Disk utility to repair Rohos Disk. Or it can be started manually:

  • Start button -> Execute
  • Enter command line “chkdsk.exe r: /f /x”, where R: your disk letter.
  • After command execution, there will be a window with a black background. You need to wait until it is shut.
  • After disk checking ends you may try to turn it on and turn it off again.

The disk is shown as unformatted

Warning: In case you used the Rohos disk successfully beforehand and suddenly it is shown as unformatted,  DO NOT FORMAT IT again.

Please note that Rohos Disk automatically formats the newly created encrypted disk into NTFS. In some cases that can’t be done so, the disk remains unformatted and you need to format it manually (right-click on disk letter in ‘My Computer’ and choose ‘Format’).

If your Rohos disk suddenly is shown as unformatted we recommend to:

  1. Restart your computer and try to connect the Rohos disk again.
  2. Use ‘Check disk’ command (Open Rohos Disk Encryption main window, connect your encrypted Rohos disk and click on Tools… and choose “Check disk”).
  3. If it doesn’t help then try to turn the disk on with the “Connect more…” command (you may use a USB flash drive as a password)
  4. If it doesn’t help, use the Recover disk dialog and one of the backup files or password reset file (RDI1, RDX)
  5. If it doesn’t help, use the ‘How to recover corrupted encrypted disk’ section below:

How to recover files from a corrupted encrypted disk

Sometimes data corruption on disk drives (especially on USB flash drives) may lead to data corruption within the Rohos Disk container. As a result, the encrypted disk is visible as unformatted or some files/folders may disappear from it.

In this case, we would recommend using the freeware PhotoRec utility:
“PhotoRec is file data recovery software designed to recover lost files including video, documents, and archives from hard disks, CD-ROMs, and lost pictures (thus the Photo Recovery name) from digital camera memory. PhotoRec ignores the file system and goes after the underlying data, so it will still work even if your media’s file system has been severely damaged or reformatted. ”

PhotoRec is able to work with the virtual encrypted disk connected as disk letter:

  • PhotoRec is able to restore only Files types that are known to it.
  • If the file is restored successfully it is stored as File1, File2, etc. So the previous file name will be lost.
  • The same for the folders, it restores folder hierarchy but folder names will be Forlder1, Folder2, Folder3, etc.

In our experience, it has successfully restored PDF, DOC, DOCX, XLS documents as well as many image formats.

You can use this utility to restore lost files from any media: encrypted disk of any manufacturer, USB flash drives, memory cards.

In case all the methods were tried but you still haven’t recovered data you may use Data Recovery Assistance.

Igor Colin,
Technical Assistance Manager team team