Undeletion Features Does Not Work need Hard Drive Recovery

If you have intentionally or unintentionally removed your critical files from your computer system, you can restore them using Undeletion feature of your file system. Deleted files and data could be recovered on many file systems, but not all the file systems offer this feature. Salvaging lost data and information without using Uneletion feature is known as data recovery. The Undeletion feature protects your files from accidental data loss.

Support

Undeletion feature is included in a number of file systems but it is not supported by all operating systems. This feature is supported by DOS (Disk Operating System) but isn’t supported by most of the modern UNIX file systems. Ext2 file system of Linux operating system has an add-on tool known as e2undel that allows users to undelete the lost files.

GUI (Graphical User Interface) environments generally take a diverse approach for Undeletion by bringing in a “holding area” for the files and directories to be deleted. The deleted files and folders are moved to this area and all the files in this area are periodically removed. This approach is known as Trash Bin in Mac OS, Deleted File in Novell Netware and Recycle Bin in Windows. This approach isn’t subject to the issue that other files and folders being written to file system would disrupt the deleted ones. Permanent deletion would occur on predictable schedule or with manual interference only.

Limitations

Although, Undeletion is an important feature to minimize the risks of permanent data loss, but it has following limitations:

o Undeletion is not completely fail-safe. Generally, the sooner the Undeletion is used, the more chances are there of its successful outcome. The fragmentation of deleted files might also reduce the possibility of efficient recovery, depending upon the type of the file system.


o This feature is not useful in case of file system corruption. When file system becomes corrupt, the system area of the files and their entries becomes inaccessible and thus Undeletion can not be performed.

In such situations, to recover your lost data, you need to opt for data recovery software. These software are powerful tools that systematically scan the whole hard drive and extract optimum data from it. They are fairly easy to use and enable you to have ‘Do It Yourself’ hard drive recovery.


Stellar Information Systems Limited is the leading provider of most advanced and power packed data recovery software. These software are available for Windows, Mac OS, Linux, UNIX and Novell Netware operating systems. The software are usable with all file systems, which are compatible with these operating systems.

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What You Do When BIOS Fails to Detect Hard Drive

When a computer system is powered up, BIOS (Basic Input/Output System) is the first program (a firmware that is software on hardware) executed by a computer system. The BIOS detects, tests and initializes system devices like hard drives, optical drives, keyboard, display screen etc. After the BIOS check is over, computer system files take control to detect the hardware and software environment. Among all computer storage media, hard disk is the most common one due to its large storage capacity and cost-effectiveness. When the hard drive fails due to hardware issues, BIOS fails to detect it. This generally happens when hard disk suffers physical issues related to one or more of its internals. Attempting to run such failed hard drives can cause more damage to your data. So, if you ever encounter such issues, it is recommended to power down the system immediately and consult data recovery solution providers for recovering lost data.

The first function of BIOS is to run POST (Power-On Self Test) that is stored on a predetermined address in memory. This code is responsible to gather information of all attached drives including hard disk. It makes sure that all hardware is working properly and the minimum hardware required is available. Thus, if the hard drive is damaged, POST may not detect it.

In particular, BIOS may fail to recognize the hard drive post issues as physical crash. But, there can be other issues as well like:

• You have recently changed the BIOS settings and hard disk is not correctly configured.
• Hard disk is inappropriately connected to the system. Power cable or interface cable is damaged or not attached to the mainboard.
• Jumper settings are not correct.
• Hard drive controllers are disabled in BIOS.

To solve the issue, you need to follow these steps:

• Set your BIOS settings to default
• Verify all cables are in good condition and are properly connected
• Check jumper settings. If you have attached two hard drives to a port/connector, make sure that one of them is configured as master and other as slave
• Make sure that all/in-use hard disk controllers are enabled
• If the problem continues, you require a hard drive recovery company that has all the modern facilities and tools to recover lost data.

Data Recovery service cutting-edge technologies and tools that are intended to recover lost data. When you first send your failed hard drive to a recovery company, the recovery experts scrutinize it under safe and controlled lab environment of Clean Rooms. Based on such analysis, suitable recovery procedures are followed to recover optimum lost data. For example, if your hard disk is damaged due to read/write head crash, experts repair or replace it.

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Tips How to STOP Error 0xA While or After Installing windows XP

Microsoft Windows XP is a popular operating system for personal computers, media centers, notebook computers and workstations. You can install Windows XP as a clean operating system copy or by upgrading from an existing version of Windows like Windows 98 SE. You should always maintain an updated data backup when you upgrade your operating system or opt for a clean reinstall. By using an up-to-date backup, you can restore all lost data post events like Windows XP upgrade failure, partition deletion, accidental/erroneous disk format operation, power failure and more. If you lose data and no valid data backup is available, you can use commercial data recovery software for complete recovery.

Consider a situation, you try to install Windows XP and it fails with an error message as:

“STOP: 0x0000000A (parameter1, parameter2, parameter3, parameter4)
IRQL_NOT_LESS_OR_EQUAL
*** Address x has base at x – filename”

Where, parameter1, parameter2, parameter3 and parameter4 refer to incorrectly referenced address, required IRQL, type of access, and address of instruction referencing memory in parameter1respectively. You may also get this error message after installing Windows XP. It is specific to Windows XP Professional and Home Edition.

Cause

It occurs when system attempts to touch pageable memory at too high a process IRQL (Interrupt Request Level). It happens in kernel mode due to these reasons:

• Driver utilizes an incorrect memory address
• Incompatible device driver or software
• Hardware issues

Solution

If you encounter the above error while installing Windows XP, you need to follow these steps:

• Make sure that installed hardware components are compatible with Windows XP
• Specify HAL (Hardware Abstraction Layer) during installation startup using F5 during the startup of installation
• Try to turn off some features in CMOS (Complementary Metal Oxide Semiconductor) settings
• Verify RAM
• Try removing adapters and disconnecting hardware devices
• Update drivers
• Go for a clean installation of Windows XP and restore data from backup
  
  

If this problem arises after installing Windows XP, use these methods:

• If you have recently installed any third-party hardware or software, try removing or disabling them
• Restore system to Last Known Good Configuration
• Try to repair Windows XP installation
• If Safe Mode is working, use Rollback Driver feature
• If Safe Mode is working, use Windows XP System Restore
• Try renaming problematic software or driver
• Restore Windows using Recovery Console
• Reformat the hard disk and use recent data backup to restore the data.

If after reformatting the hard disk, you discover that backup is not up-to-date or is unable to deliver expected results, you need to choose efficient hard drive recovery utilities to recover all lost data. These hard disk recovery tools are designed to safely scan your drive and recover lost files.

Phoenix Windows data recovery software is the finest data recovery tools. It is equipped with advanced features like RAW Recovery, Drive Imaging, E-Mail Recovery and more. The software supports FAT16, FAT32, vFAT, NTFS, and NTFS5 file systems based Windows partitions and volumes. It is compatible with Windows Vista, XP, 2003 and 2000.

taken from source : http://www.americanchronicle.com/articles/view/102235

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Hard Drive Recovery Software Services

A hard drive failure or damage can be caused while a user is performing certain normal operations, or due to certain external factors like, heat, water, high magnetic waves, natural calamities etc. A physically damaged hard drive can halt the functioning of operating system and stop the user to access the data stored in the hard drive. In such situations, if the user has not created any backup of the inaccessible data, then he needs to take help of Hard drive recovery services.

As a practical scenario, when a user attempts to install Microsoft Windows XP on a hard drive that is formatted with NTFS (New Technology File System), he encounters the below error message:

Stop: c0000218 {Registry File Failure} The registry cannot load the hive (file): \SystemRoot\System32\Config\SOFTWARE or its log or alternate

The above error message appears after Windows XP copies the installation files to the hard drive and the computer system restarts. After the above error message appears, the data saved in the hard drive becomes inaccessible. These can be the two main reasons for the above error message:

• The hardware where you are trying to install Windows XP may not be compatible with Windows XP.
• The hard disk where you are trying to install Windows XP may be physically damaged.
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To resolve the above error message and access the data, the best and simple steps are given below user needs to follow these steps:

• The user needs to make sure that the hard drive is compatible with Windows XP. If the hard drive is not compatible, then he needs to connect a hard drive that supports Windows XP.
• The user can use the Recovery Console to confirm that the hard drive is not damaged.
• If the hard drive is damaged and cannot be repaired, The user needs to replace the hard drive.
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By replacing the hard drive with one that supports Windows XP, the user can successfully install the operating system. To recover the data from a physically damaged hard drive, the user needs the assistance from a Data Recovery organization. A Data Recovery company provides Data Recovery service to completely recover the files from a physically damaged hard drive.

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