Recover Lost Files And Folders
Earlier versions of Windows supported storing BitLocker recovery keys in AD DS This works well, but each BitLocker-protected volume has a unique recovery key. In enterprises, this can consume a large amount of space in AD DS . By using a data recovery agent instead of storing recovery keys in AD DS, you can store a single certificate in AD DS and use it to recover any BitLocker-protected volume. To configure a data recovery agent, follow these steps 1. Publish the future data recovery agent's certificate to AD DS . Alternatively, export the certificate to a . cer file and have it available . 3. Right-click BitLocker Drive Encryption, click Add Data Recovery Agent to start the Add Recovery Agent Wizard, and then click Next . 4. On the Select Recovery Agents page, click Browse Directory (if the certificate is stored in AD DS) or Browse Folders (if you have saved the . cer file locally). Select a . cer file to use as a data recovery agent. After the file is selected, it will be imported...
Although various data recovery tools are available scattered through the Windows 7 user interface, a single interface Backup and Restore provides a handy front end to most of them. Shown in Figure 24-1, this application helps you backup and restore files on your PC, create and restore complete system image backups as well, and access the System Restore recovery utility. Because Backup and Restore basically sits in front of most of the other data recovery functions included in Windows 7, we will use this as the obvious starting point for most of the data, file, and system backup and restore features discussed in this chapter.
The Encrypting File System (EFS) provides a secure way to store your sensitive data Windows creates a randomly generated file encryption key (FEK) and then transparently encrypts the data, using this FEK, as it is being written to disk. Windows then encrypts the FEK using your public key. (Windows creates a personal encryption certificate with a public private key pair for you the first time you use EFS .) The FEK, and therefore the data it encrypts, can be decrypted only with your certificate and its associated private key, which are available only when you log on with your user name and password. (Designated data recovery agents can also decrypt your data.) Other users who attempt to use your encrypted files receive an access denied message . Even administrators and others who have permission to take ownership of files are unable to open your encrypted files. EFS, which uses Advanced Encryption Standard (AES) with a 256-bit key as its default encryption algorithm, provides extremely...
The Recycle Bin holds recently deleted files to provide you with a reasonable opportunity to recover them. As discussed in Chapter 4, Using the Windows 7 User Interface, the Recycle Bin holds the last deleted files that fit within its size restriction. That restriction, by default, is 10 for drives up to 40GB for larger drives, the maximum is 4GB plus 5 of the capacity. However, you can customize the Recycle Bin for your specific needs. The Recycle Bin's Properties dialog box (accessed by right-clicking over the icon and then selecting Properties) displays available space for each partition volume on the system. If you've never deleted a file by mistake and don't think you ever will, you can elect to delete files immediately without storing them in the Recycle Bin. It's better, however, to allow the Recycle Bin to catch your deleted files, even if that means lowering the maximum amount of allocated disk space. A final control in this dialog box enables a deletion confirmation dialog...
The contents of the Recycle Bin take up space on your hard disk. By default, 10 percent of a disk up to 40 GB in size is allocated to the Recycle Bin, plus 5 percent of any space over 40 GB . If your hard disk is divided into partitions, the Recycle Bin might quickly become full. For example, if the Recycle Bin is on a 10 GB partition, only 1 GB is available for deleted files .
When you organize the contents of a folder, disk, or the desktop, you might find files and folders that you no longer need. You can delete these items or remove them from the disk. If you delete a file or folder from the desktop or from the hard disk, it goes into the Recycle Bin. The Recycle Bin, located on your desktop, is a temporary storage area for deleted files. The Recycle Bin stores all the items you delete from your hard disk so that if you accidentally delete an item, you can remove it from the Recycle Bin to restore it. Be aware that if you delete a file from a removable disk, it is permanently deleted, not stored in the Recycle Bin. The files in the Recycle Bin do occupy room on your computer, so you need to empty it to free up space.
Customers that didn't deploy Windows Vista with the required two-partition configuration found that enabling BitLocker was entirely too cumbersome. Windows 7 automatically creates the necessary disk partitions during installation and now includes the ability to right-click a drive to enable BitLocker protection. BitLocker also adds a supportive Data Recovery Agent (DRA) for all protected volumes, allowing IT administrators to dictate that all such volumes are appropriately encrypted.
Before making any changes with Regedit, export the current Registry with File, Export so that you have a backup copy, in case of problems. By default, Export saves only the current branch. To export the entire Registry, select All in the lower-left corner of the Export Registry File dialog box. Provide a name for the exported Registry, such as the computer name and current date, and click Save. You can use USB flash memory drives and other types of storage to save the exported Registry. However, you should not save it to the hard disk, espe cially if you suspect that you might need to perform data recovery operations on it later. (You don't want to overwrite any recoverable data.)
In the Unabridged Edition of Murphy's Law, you'll find an entire chapter of corollaries that apply to computers in general and your important data files in particular. Murphy says, Anything that can go wrong will go wrong That's certainly true of hard disks, where it's not a matter of whether they'll fail but when . When a disk crashes, it's usually impossible to recover your data without spending a small fortune at a data recovery service
For a full description of how the Previous Versions feature works and how to use it, see Recovering Lost, Damaged, and Deleted Files and Folders on page 337. If you're looking for step-by-step instructions on how to use System Restore to recover from a crash, see Rolling Back to a Stable State with System Restore on page 398. For information about recovering files that have been inadvertently edited or deleted, see Recovering Lost, Damaged, and Deleted Files and Folders on page 337. For technical details about the implementation of System Restore in Windows 7, see the associated MSDN reference pages Volume Shadow Copy Service (w7io.com 1102) and System Restore (w7io.com 1103).
If indexing tasks are currently under way, the status message will display an increase or decrease in the number of items indexed, as new, changed, and deleted files are processed. The indexer is designed to throttle itself whenever it detects that the system is working on other, presumably more important tasks. As a result, you'll most likely be told that Indexing speed is reduced due to user activity when you first check.
If you are one of the lucky people who have never lost a file on your computer, congratulations however, this chapter is still for you. If you have lost files before yep that's you then you should review this chapter too before you begin. In this chapter, you'll learn how to use Backup and Restore, backup and restore your registry, and how to recover lost files.
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Computer Hard Drive Data Recovery
Learn How To Recover Your Hard Drive Data After A Computer Failure.