The BIOS (Basic Input/Output System) in a Microsoft Windows computer is a boot firmware, which provides all of the boot information to computer processor for proper booting of your system. In the first physical sector of BIOS, MBR (Master Boot Record) is stored. MBR loads the first sector of your boot media, either hard drive or floppy. After successfully loading first sector, BIOS examines last two bytes of the boot sector (that is 55AA). The 55AA is known as boot signature and work like an EOF (End Of File) when the process reads the sector.

Damaged or missing (due to operating system malfunction, software errors and improper system shutdown) boot record signature can cause severe issues. In such case, the data stored in the hard drive partition table gets damaged and your system becomes completely unbootable. In such situations, you can not access any of your hard drive partition and the partition loss situations occur. At this point, you are required to go for Partition Recovery solutions to recover lost, missing or inaccessible hard drive partitions.

In a practical scenario, the boot record signature may get damaged when BIOS boots the system. When boot record signature gets damaged or goes missing, you might come across any of the below given error messages:

“Boot Record Signature AA55 Not Found, xxyy Found” Or “Non-System or Non-Bootable Disk” Or “Strike f1 to retry boot” When these error messages occur, your system stops responding and it can not boot up. At this point, you need to find out the cause of partition loss and perform Partition Recovery by sorting out this issue.

Grounds of this issue This issue may occur due to damage to the key data structure of your computer system. That could be due to virus infection, software errors or improper system shutdown. Due to the same, BIOS can not read the boot disk and can not load operating system.

Resolution In order to recover lost partitions, you should opt for Partition Recovery Software. These tools are particularly designed to methodically scan entire hard drive and retrieve all of the lost partitions and stored data. Efficient scanning algorithms are used by these applications to achieve absolute recovery. With interactive and simple graphical user interface, these software are completely easy to use.

Stellar Phoenix Windows Data Recovery is the most excellent solution to recover lost hard drive partitions. It recovers all FAT32, VFAT, NTFS and NTFS5 file system partitions. This Partition Recovery Software is designed for Microsoft Windows 7 RC1, Vista, 2003, XP and 2000.

Intel based computer systems rely on system BIOS (Basic Input/Output System) for loading and executing the bootstrap code. BIOS bootstrap function generates the int 0×19 that loads first sector of hard drive in memory at the segment address 0000:7C00H. First physical sector of hard drive is known as MBR (Master Boot Record) that contains primary bootstrap loading code.

But in some situations, the boot process might fail due to missing boot record signature. This behavior of Windows computer renders all of your hard drive partitions inaccessible and cause critical partition loss situations. In these cases, Partition Recovery solutions comes for your rescue to retrieve all of the missing, lost or inaccessible hard drive partitions.

After successfully loading the sector zero, BIOS examines that last two types of sector are 5511 as shows on the disk. The 55aa is known as the boot record signature and this is like the EOF (End of File) when sector is read. It is required by BIOS while booting the system. But in case if the boot record signature goes missing, system does not boot up and you come across the following error message:

“Boot Record Signature AA55 Not Found, xxyy Found.”

Alternately, any of the following messages will appear and your system will stop working:

Non-System or Non-Bootable Disk

Strike f1 to retry boot

If the Windows operating system is installed on the logical drive in extended partition, after BOOT MENU choice and NTDETECT runs, below error message might occur:

“OS Loader 4.0Boot record Signature AA55 Not Found, xxyy Found.”

Microsoft Windows operating system could not boot in such situations due to some hard drive configuration or boot loader issues. In these cases, system could not read data from selected boot drive and thus it become unbootable and renders all of the hard drive partitions inaccessible, causing partition loss.

In these critical conditions, you require a solution that can effectively scan whole hard drive and retrieve all of the lost Windows partitions. This is possible through third party Partition Recovery Software.

These are highly automated applications, which do not require much user interaction for performing Partition Recovery. These software have quite simple and self explanatory graphical user interface, which enables you to carry out quick and easy recovery. The Partition Recovery Software do not alter data on the hard drive as they have read-only and non-destructive conduct.

Stellar Phoenix Windows Data Recovery is the most comprehensive and robust tool to ensure absolute and quick recovery of lost partitions. It supports recovery of FAT32, VFAT, NTFS and NTFS5 file system partitions. This software is compatible with Microsoft Windows 7 RC1, Vista, 2003, XP and 2000.

I have an IBM ThinkPad. It has an option to boot from Pen Drive in BIOS. So, I have 1GB Pen Drive made by Kingston. I wanted to be able to boot from a Pen Drive(mainly Linux but I need a Windows image as well).

So I created a boot image with BartPE and wrote it to the Pen Drive. Then, I also tried booting with PenDriveLinux image too. But, what happens is, whenever I load the Pen Drive from boot menu, the system proceeds to boot from the Hard disk rather than the pen drive. I tried writing a small program called MemTest to my pen drive and running it too.But, it also fails.

Is this a fault with the pen drive? Should the pen drive also support boot option? Can’t I just take any Pen Drive and write a boot image to it and boot from it?

Are you facing error message while booting your Windows Vista computer? Does your system stop responding upon boot or the system is not longer bootable? If your answer is ‘yes’ for any of these answers, you are at stake of data loss. Such issues render your Windows hard drive inaccessible and cause critical data loss situations. At this point, you need to restore lost data from an updated backup. However, in case if the backup is not available, Windows Data Recovery solutions are required to extract lost data.

If your Windows Vista based-computer is not booting up at all, you can try out following steps to sort out this issue:

Startup Repair – It is a Microsoft Windows recovery tool, which can resolve certain issues like corrupted or missing system files that may prevent Windows Vista from starting. You can access this option from System Recovery Options menu that is on Microsoft Windows Vista installation DVD. If your system has pre-installed Windows Recovery options, it may also be their on your hard drive.

Modify Restart Settings through Safe Mode – Reboot your Microsoft Windows Vista computer in safe mode and then select ‘Disable automatic restart on system failure’ check box. It helps you to resolve the issue if your system is stuck in boot where Windows Vista fails and tries to reboot again and again.

Reinstall Windows Vista – If none of the above methods work and all of the hardware components of your system are intact, reinstall Windows Vista. Re installation replaces all the damaged system files with new one and fix the problem.

You should perform the reinstallation of Windows Vista as a last option, as it needs formatting of the hard drive that eventually removes all the files from your Windows disk. After you reinstall the Windows Vista, you need to install all the programs and restore data from backup.

In case if the backup is damaged, not updated, or does not exist, windows data recovery software is the only option to go. These applications are incorporated with powerful scanning algorithms to carry put in-depth scan of entire hard drive and extract all lost, missing, and inaccessible data from it.

They enable you to carry out Windows Data Recovery on your own, as they have simple and self-descriptive graphical user interface. The applications do not alter original data on your hard drive due to read-only and non-destructive conduct.

Stellar Phoenix Windows Data Recovery is the most effective and well-known product for assured recovery of lost Windows data. The software works well with Microsoft Windows 7, Vista, 2003, XP, and 2000. It recovers lost data from FAT16, FAT32, VFAT, NTFS, and NTFS5 file system partitions.

Due to problems with backing up my computer’s files, I’ve made a bootable disk to boot from and then copy files. I’e tried a few different processes I’ve found on the net using BartPE, and none of them have worked. When I put the CD into my other (broken) computer and start it up, it gets stuck right before it would normally say “press any key to boot from CD”. It just sits there. booting from the Windows XP installation CD works, and booting from a memtestx86 bootable CD I made works. Does anyone know what’s wrong? The installation of windows I used was Windows XP Home Edition Service Pack 2 (copied from my CD). I thought it might be because I was using an OEM installation, but the process to get around that ( http://forum.kaspersky.com/lofiversion/index.php/t57699.html ) didn’t solve anything. Thanks in advance.

Is your Windows hard drive refusing to boot up when you start your computer? Can you boot your system using a floppy disk without any problem? The problem may occur due to missing or damaged boot files on your Windows hard drive. Corruption may occur due to numerous reasons such as virus infection and improper system shutdown. In such cases, all your hard drive data may become inaccessible and you may face critical data loss. You need to restore valuable data from a complete backup. However, if the backup is not available, hard drive recovery becomes need of hour.

When a hard drive refuses to boot in such cases, you can boot the system using a bootable floppy disk and can access the disk using third-party disk utility software. After booting the system, you can run disk repair utility, like ChkDsk tool, to detect and fix hard drive errors.

Cause

Generally, when Windows hard drive can not be detected in BIOS (Basic Input/Output System) but accessed normally after booting the system using floppy, it implies a problem with logical components of the drive. The most common cause of this problem is a damaged boot sector or a boot sector virus.

Resolution

Try the below methods to fix the problem and perform hard drive data recovery:

Reboot the hard drive

Scan your hard drive using an updated anti-virus software. If the problem is due to a boot sector, it can help you to sort the issue.

Set the system or boot partition as ‘active’, if you are changing the hard drive partitions. Else, you can not boot from primary partition.

Boot your system in Recovery Console and fix a damaged boot sector, if it has been corrupted by a virus or some other reason.

Put your DOS partition as the first partition, if you are configuring your system as dual-boot.

If none of the above methods work, you need to format the hard drive and reinstall operating system to fix damaged boot sector. However, formatting removes all the data from hard drive and creates need of hard drive recovery.

You can successfully recover lost hard drive data using third-party hard drive data recovery software. The applications use efficient scanning methods to ensure absolute recovery in all cases of data loss.

Stellar Phoenix Windows Data Recovery is the most excellent solution for all kinds of data loss. The software is compatible with Microsoft Windows 7, Vista, 2003, XP, and 2000. It supports recovery from NTFS5, NTFS, FAT32, VFAT, and FAT16 file system partitions.

I need to create a custom boot cd that I can use after getting that dreaded “Blue Screen of Death” crash because I can’t get back into Windows XP in any mode. Only by using the CD drive. I need something that boots similar to the Windows XP setup CD or BartPE but using a particular program (ie. Backup Utility). I tried creating an AutoRun CD but I can’t get it to boot automatically except in Windows.
Again, I want to make this myself using other programs. In other words, I don’t want to use the Windows XP setup CD or any other pre-made CDs unless it is a program that I can just create the CD by substituting my own application to boot up before Windows does since I wouldn’t be able to get that far anyway after the Blue Screen. Also, I know to set the boot options to CD-ROM first, too.
Thanks.

The Extensible Firmware Interface or EFI is a specification, which defines the application interface between Mac OS X and the platform firmware. The Extensible Firmware Interface boot procedure includes a boot manager that is built-in platform firmware. But in some of the Mac OS X systems, boot drive options are required to be modified to involve the EFI boot. In some cases, changing the boot options might cause critical problems and may lead to serious data loss. In such circumstances, you need to opt for Mac Data Recovery to get your mission critical and valuable data back. If you modify the boot options and you desire to select from available boot volumes, boot menu starts showing options that are totally unexpected. EFI boot options begin showing and you’ve no clue of accessing bootable volume that has a huge amount of critical data  within. The boot process might not be usual, but drive name is shown as general in the Finder. The situation is quite difficult as all of your critical data is inaccessible and at stake of loss. This issue may take place due to some modifications made to the structure of Mac OS X volumes. The problem may also occur if you have restored the clone of hard drive after you upgrade your system or you face data loss and need Mac Recovery to get your valuable data back. In such cases, you are highly recommended to stop using the system and go through underwritten steps:You should use alternative methods to clone the hard drive. Cloning should be done using bit-for-bit transfer methods as a minor mistake may cause serious data loss. Use Disk Repair utility to check consistency and integrity of your hard drive. It the tool find any error, fix it. Reset the PRAM as it may have some significant boot information. Go to System Preferences and change the startup disk. When all else fails, perform Erase and Install Installation of Mac OS X. You can resolve all the disk related issues by erasing a Mac drive and reinstalling operating system, but it also leads to critical data loss. In such situations, you need to go for Data Recovery Mac to extract all of the lost data. Recovery is best possible using advanced and effective Mac Recovery Software. The applications methodically scan whole drive and extract as much data as possible from it. You can perform Do It Yourself recovery using these tools as they have rich and interactive graphical user interface. Stellar Phoenix Macintosh Data Recovery is the most excellent and robust solution for all your Mac data loss problems. It is designed for Mac OS X 10.6, 10.5, 10.4 and 10.3.9. The software recovers data from HFS, HFS+, HFSX, HFS Wrapper and FAT file system volumes.

I’m trying to help a friend install a new copy of XP. His Acer notebook comes installed with Vista. I want to make his computer a dual-boot system, or at worst, remove Vista, reformat the whole hard drive and start anew. The problem is that when I boot with the XP installation disk the notebook’s hard drive is hidden. So XP installation reports there is no hard drive. If i use BartPE to boot, the notebook’s hard drive is also hidden. There must be something in the BIOS that hides the hard disk if you boot from CD-Rom or anything else other than the hard disk. But I can’t find it. I’ve experimented with the boot sequence but it makes no difference. How do I make the hard disk visible so that I can install XP? Thanks.
Tks Python. But the bios is already set to IDE0. And there is no HDD configuration option. There is no mention of choosing SATA or IDE anywhere in the bios configuration pages.

you got yourself an Eee PC or a Netbook, and you got fed up with the pre-installed Windows? Or do you want to run something more stable – safer and free? There are a few reasons why Linux is a better alternative, but I will not discuss it here.Around 10 days ago, I got an Eee PC 1000 H. It came with 160 GB hard drive, 1 GB ram and Windows XP Home Edition. Not being a Windows fan, and a hard core OS X user, I had to look for an alternative to run without many problems.

I found some posts where people have installed the OS X Hackintosh version, but they also had a shit load of issues, and issues was something that I was not looking for. Therefore, my second choice on the list was to go with Linux, and being familiar with Ubuntu I gave it a shot.Yesterday, Ubuntu 9.04 aka the Jaunty Jackelope was launched, this version also sported a Netbook Remix version of the Ubuntu Gnome distro. So in this post, we will use the Ubuntu Netbook Remix (UNR), which is designed for small screens and optimized for netbooks.Are you ready? Let’s start…

So, what do you need? * As most netbooks do not sport an optical drive, you will need a 1 GB or bigger flash drive. Get a nice one, and don’t be a cheap ass here. You might face boot up issues if your flash drive sucks. * UNR image file. * Boot tools, depending on whether you are using Windows, Mac or Linux. * And no doubt, the Netbook!Before downloading, check this list of the models which are supported and what issues you might face by installing UNR on your netbook.Download:So to Download the UNR image file, go to this page, select a server, and start the download process. The file is something of 1 Gegs, so it might take some time depending on your connection speed.But don’t just sit back and do nothing while the file is being download. Go to this wiki page, where you will learn how to create a bootalbe USB flash drive. It’s quite easy really, and should be no biggy. Also start downloading the tool you will need depending the OS you are currently on, and wait till the UNR image file has finished downloading.Creating the Bootable Flash Drive:If you are not using Ubuntu, skip this part, and get help from the wiki page I mentioned earlier. Sorry, but if you face troubles, drop a comment and I’ll do my utmost to help.When I was preparing this guide, I was already using UNR 9.04 (daily release version – not the official release). I really didn’t even feel like booting up a Windows machine, therefore, I used the usb-imagewriter package for Ubuntu. To install, fire up your terminal and run the following commands: