Hi, I have an ASUS x200ca 64 bit laptop computer with Windows 8.1 64 bit. Windows runs perfect. However, I installed Ubuntu 14.04 64 bit to an external 1TB harddrive. Linux modified the MBR to include GRUB, a multiboot utility. Ununtu ran great; but I tried to install an update for GNUradio and GNUradio companion. Easy to do on Linux, not so esay on Windows. Therefore I need Linux. I tried to un-install the older version of GNURadio, but Linux got messed up. No longer booted with GRUB. Deleted the entire external harddrive; wiped it clean. Now I need one more step, I need to restore the Windows 8.1 MBR. The Ubuntu USB flash drive does not boot, probabily GRUP at fault. Asus did not supply USB flash drives or even the install CD's. Besides, my Laptop has no cd drive. They will not even provide the access key. They provide a 'generic' keycode not the real keycode. I purchased the computer from Best Buys about 6 months ago. Should worse come to worse I could wipe out the internal harddrive and install Ubuntu. First make a backup. Other than taking this drastic step, anyone know of a better way?

Thanks

An application that was created in order to provide users with an easy to use and universal boot loader which is based on GNU GRUB

The intricacies of the inner workings of operating systems are a bit too complicated for most users who just want to see stuff working, without having to go in depth to learn what a software 'mechanism' is all about.

When it comes to things like the boot sequence or having two or more OS's installed, we're already stepping into the less known territory. Nonetheless, something quite useful and easy to remember insofar as the multi-boot systems is concerned is that they need a good boot loader to function properly.

One of the rather numerous tools of this kind that are mainly targeted at highly experienced users is GRUB4DOS. This program can be considered an evolution of GNU GRUB, carrying several enhancements.

First of all, it is important to understand what such a utility actually does. Any boot loader software will come into play when you switch on the power on your computer. This program will initiate the OS or offer a list of installed operating systems to allow the user to choose the one that they want to start.

GRUB4DOS also comes with some extra functions besides the innate ability to boot off through the Windows boot manager, DOS or Linux. More precisely, it allows booting directly from the MBR partition or from a CD and is equipped for BIOS disk emulation, carrying dedicated drivers for ATAPI optical units.

The boot manager or loader of GRUB4DOS can be triggered in a variety of ways. First off, from the DOS prompt or command-line, you can run the executable directly. Secondly, it can be integrated into the BOOT.INI file that describes the OS options to be displayed when starting up. Another method would be to incorporate the executable in the CONFIG.SYS file for older editions of Windows (up to Windows NT).

Since it is a highly specialized tool and on top of that one tailored for experienced users only, GRUB4DOS will surely need a bit of getting used to before using it to its full potential.

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GRUB4DOS was reviewed by Olivian Puha

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GRUB4DOS 0.4.4

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file size:

800 KB

filename:

grub4dos-0.4.4.zip

runs on:

Windows 10
Windows 8
Windows 7
Windows Vista
Windows XP

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System

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