Data Lifeguard Diagnostic for DOS


1)What is differents software Data Lifeguard Diagnostic for DOS for blue and green sata disks ?

2)If  I just doing fdisk for new HD black edition  1TB  for install Windows 7 Home Premium ?

Wait answer.


The DLG version that appears on the download section for each drive is the same. 

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FDISK.EXE is probably not the right utility depending on which version you use…  with DOS v5, the size of a logical drive was limited to 528mb…  with windows v95-OSR2, the FDISK limit was raised again to partition size of 8gb…  with the advent of Windows NT and 2000, the size of partitions could be set through the graphical interface called “Disk Management” during installation and further changed through the operating system using “Disk Administrator / Management.”  however, the operating system isn’t the only factor which limits the disk partition size.

The standard BIOS has a limit of 504mb…  to overcome this, newer BIOS include an enhanced mode that uses "logical block addressing (LBA) techniques to enable larger partition sizes available through DOS and Windows…  known as “enhanced cylinder, heads, sectors” (ECHS), it increases the number of r/w heads the system can recognize from 16 to 256…  with window NT and 2000, the system then creates either a “file allocation table” ( FAT) or a more flexible “master file table” (MFT)…  but wait, there’s more…

the newest methods are able to recognize even larger disks depending on whether or not the old drive is partitioned as MBR “master boot record”, (a step in the POST procedure) and not as GPT. The maximum addressable space for the MBR layout is 2 TB… If the source is a bootable operating system drive, conversion alone is insufficient. Booting Windows from GPT is very different from booting from MBR. It requires a UEFI-based BIOS, a special EFI system partition on the drive, different Windows boot files, and a special record in the BIOS NVRAM. These can only be created when doing a new Windows installation.

For additional information, i would recommend a  WD search, a current volume of the A+ Certification Training Guide, or searching microsoft, your system board mfg, or even Acronis software posted here on the WD downloads section, which can provide you with an UEFI emulation driver (ACRONIS IMAGER atih installer WD en).

Hello ThirdGenWD.

Thank for Your help.


Hello jubie04.

Thank for Your help Mee.