Fungsi Recovery Partition

[Mariu Carlton]

InWindows deployments, the Installer builds a recovery partition on the Windows system/boot disk. The disk layouts vary over time, depending on which version of Windows was responsible for the first set of disk partitions, and which subsequent versions have come along.

Figure A comes from Windows 10's built-in Disk Management utility, and Figure B comes from the MiniTool Partition Wizard. Both show a 500 GB nonvolatile memory express boot/system disk (C: drive). Both displays show the following partitions:

Most Windows installations show that the Windows Recovery Environment (WinRE) is active (the status is Enabled) and provide a location. The second line in Figure C shows that it appears as partition 1 on hard disk 2. The exact details differ depending on the machine on which you try this.

Open the Partition Wizard, then right-click on the 450 MB Recovery partition on the boot/system drive layout in whatever position the active WinRE partition appears on that drive. Start with number 1, and count from left to right to identify the partition that needs a drive letter. This particular item reads partition1, which means the partition furthest to the left needs the letter. Assign a drive letter to the recovery partition by clicking the OK button, and use whatever letter you'd like (Figure D).

Step 3: Add a boot entry for the recovery partition in EasyBCD. Next, you should open EasyBCD -- a program you can use to alter Boot Configuration Data -- in which the View Settings button is selected by default. This displays the current entries in the Windows bootloader. For most readers, this consists of a single entry for your current Windows OS.

To add a second entry to the WinRE partition on the x: drive, click Add New Entry in the left sidebar. Then, click the tab in the pane in the lower section that reads WinPE. Enter :\Recovery\WindowsRE\WinRE.wim in the Path field, then click Add Entry in the lower-right corner of the EasyBCD window (Figure E).

You cannot navigate the file system on your bootable recovery partition inside EasyBCD or File Explorer. If the preceding string doesn't work, use the Partition Wizard and right-click Partition Recovery. Then, use the Explore Partition button to navigate through the file system instead.

You can rename the image whatever you want. Click the line that reads NST WinPE Image, then click the Rename button. Type the name you want, and press Enter. Make sure you check the Use Metro bootloader box under Menu Options to see a modern-style graphical boot menu, instead of an old-fashioned, DOS-style character boot menu. Click the Save Settings button.

Step 5: Check your work. You must now restart the PC to see if the menu changes worked. You should see a Windows boot menu screen that reads Windows 10 above, and the name of your NST WinPE Image below.

If you choose the recovery option, the PC boots to a recovery image instead of the usual OS, and you can make all kinds of changes and repairs. When you're done, go back into the Partition Wizard and remove the drive letter from your bootable recovery partition.

This example assumes a simple and conventional drive layout. In the real world, PCs might be much more complex. If so, you can use the reagentc command to find the current recovery partition and add that partition to the boot menu.

If you get an error or something doesn't work when following these steps, there's more help available. This article lists just the first few things to try. There's much more information on the Microsoft community site in the Files, folders, and storage section. That section lists the wide variety of hardware and software configurations you might be dealing with. If you still need help, post a question there, Contact Microsoft Support, or contact the manufacturer of your hardware.

Cause: If you don't see the disk in File Explorer and it's listed in Disk Management as Not Initialized, the disk might not have a valid disk signature. It's either because the disk was never initialized and formatted, or the drive formatting has become corrupted somehow. It's also possible that the disk is having hardware problems or other issues as described further on in this article.

If the drive is new and just needs to be initialized, the solution is to initialize the disk. For more information, see Initialize new disks. But there's a good chance you've already tried this approach, and it didn't work. Or maybe you have a disk full of important files that you don't want the initializing process to erase.

There are many reasons a disk or memory card might be missing or fail to initialize, but the most common reason is that the disk is failing. There's only so much you can do to fix a failing disk. The following are some steps to try to get it working again. If the disk works after you've completed one of these steps, don't bother with the remaining ones. At this point, maybe update your backups.

Ignore any partitions that are listed as EFI System Partition or Recovery Partition. These partitions are full of important files that your PC needs to operate properly. It's best to just leave them alone to do their job of starting your PC and helping you recover from problems.

Shut down your PC, turn off your external hard disk (if it's an external disk with a power cord), and then turn your PC and the disk back on.To turn off your PC in Windows 10, select the Start button, select the Power button, and then select Shut down.

Plug the disk into a different USB port that's directly on your PC (not on a hub).Sometimes, USB disks don't get enough power from some ports, or they have other issues with particular ports. This issue is especially common with USB hubs, but sometimes there are differences between ports on a PC. So if you have other ports, try a few different ones.

Try a different cable.Cables fail often, so try using a different cable to plug in the disk. If you have an internal disk in a desktop PC, you need to shut down your PC before switching cables. See your PC's manual for details.

Check Device Manager for issues.Select and hold (or right-click) the Start button, then select Device Manager from the context menu. Look for any devices with an exclamation point beside it or other issues. Select the device and then read its status.

If the disk doesn't work on another PC, it's a good sign that there's something wrong with the disk, and not your PC. Search for and ask for help at the Microsoft community site, or contact your disk manufacturer or Microsoft Support.

If you just can't get it working, there are apps that can try to recover data from a failing disk. Or if the files are vitally important, you can pay a data recovery lab to try to recover them. If you find something that works for you, let us know in the comments section.

Disks fail often, so it's important to regularly back up any files you care about. If you have a disk that sometimes doesn't appear or gives errors, consider this a reminder to double-check your backup methods. It's OK if you're a little behind - we've all been there. The best backup solution is one you use, so we encourage you to find one that works for you and stick with it.

For more information on using apps built into Windows to backup files to an external drive such as a USB drive, see Backup and restore in Windows. You can also save files in Microsoft OneDrive, which syncs files from your PC to the cloud. If your hard disk fails, you'll still be able to get any files you store in OneDrive from OneDrive.com. For more information, see Sync files with OneDrive in Windows.

Cause: The basic or dynamic disk isn't accessible and might have experienced hardware failure, corruption, or I/O errors. The disk's copy of the system's disk configuration database might be corrupted. An error icon appears on disks that display the Unreadable status.

Disks might also display the Unreadable status while they're spinning up or when Disk Management is rescanning all of the disks on the system. In some cases, an unreadable disk has failed and isn't recoverable. For dynamic disks, the Unreadable status usually results from corruption or I/O errors on part of the disk, rather than failure of the entire disk.

Solution: Rescan the disks or restart the computer to see if the disk status changes. Also try the troubleshooting steps described in Disks that are missing or not initialized, plus general troubleshooting steps.

Cause: The Foreign status occurs when you move a dynamic disk to the local computer from another computer PC. A warning icon appears on disks that display the Foreign status.

In some cases, a disk that was previously connected to the system can display the Foreign status. Configuration data for dynamic disks is stored on all dynamic disks, so the information about which disks the system owns is lost when all dynamic disks fail.

Solution: Add the disk to your computer's system configuration so that you can access data on the disk. To add a disk to your computer's system configuration, import the foreign disk. Select and hold (or right-click) the disk, and then select Import Foreign Disks. Any existing volumes on the foreign disk become visible and accessible when you import the disk.

If the disk status is Offline and the disk's name changes to Missing, the disk was recently available on the system but can no longer be located or identified. The missing disk might be corrupted, powered down, or disconnected.

Cause: The basic or dynamic volume can't be started automatically, the disk is damaged, or the file system is corrupt. Unless the disk or file system can be repaired, the Failed status indicates data loss.

Cause: The Unknown status occurs when the boot sector for the volume is corrupted (possibly due to a virus) and you can no longer access data on the volume. The Unknown status also occurs when you install a new disk but don't successfully complete the wizard to create a disk signature.

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