Removing the Dynamic Drive Overlay

Supported Operating Systems

The Disk Manager dynamic drive overlay provides support for drives that have capacities greater than 528 Mbytes under MS-DOS, Windows 3.x, Windows 95, Windows NT 3.51, Window NT 3.50 (requires DM upgrade drivers), OS/2 V3.0 (Warp full pack), and OS/2 V2.0–3.0 (requires DM upgrade drivers). Disk Manager does not support 32-bit FAT in Windows 95.

Before you install a non-DOS operating system on the drive, install DOS and Disk Manager and make sure that the drive is bootable. Instructions for running the dynamic drive overlay with other operating systems are available in the Disk Manager online manual.

If Disk Manager installs a dynamic drive overlay (DDO) and you do not need this software to access the full capacity of your drive, you can remove the dynamic drive overlay without losing your data. However, you will lose access to the full capacity of your drive unless you have another method for accessing high-capacity drives (see Addressing Drive-Capacity Limitations on the front side of this sheet). Follow the instructions below to remove a DDO from a drive.

!Caution. Before you attempt to remove a DDO, make a backup copy of all the data on your hard

disc. Also, run CHKDSK, SCANDISK or a third- party equivalent to detect and repair any damaged files before you follow the procedure below. If the DDO migration program encounters a serious file problem or is interrupted by a power loss or hardware failure, the migration will fail and your data will be lost.

1Boot the computer to Drive C.

2Insert your DiscWizard diskette into Drive A.

3Type A:\DM to start Disk Manager.

4Select the Select Installation Options Menu.

5Select (M)aintenance Menu.

6Select (M)igrate Dynamic Drive. This program moves the data on your drive so that it can be accessed without the DDO. The migration may take up to an hour to complete, depending on the size of your drive.

7When the migration program has finished, exit Disk Manager.

8Remove the diskette and reboot the computer. Enter your system setup program (see your system manual for details).

9Configure the hard drive with the Cylinder/Head/Sector parameters shown for your drive in the table in Section 2, “Configuring Your Computer,” on the front side of this sheet. Save your changes and exit the system setup program.

10When your computer has rebooted, insert the DiscWizard diskette into drive A.

11Type A:\DM and choose the Maintenance Menu.

12Select Uninstall (D)isk Manager.

13Select the correct drive to uninstall.

14When the uninstall is complete, exit Disk Manager and reboot.

Note. Disk Manager can also remove a drive overlay placed by the EZ-Drive program. Select (C)onvert Drive Format from the Maintenance Menu.

shown below. This enables the alternate capacity option that causes the drive to appear to your BIOS as having a 2.1-Gbyte capacity (4,092 cylinders, 16 heads, 63 sectors per track). You may need third-party partitioning software, such as Disk Manager, to achieve full capacity of the drive.

	A C E G
		Master/slave
		jumper block
	B D F H
Alternate capacity		Limit capacity to 1.2 Gbytes
Alternate capacity		Limit capacity to 1.2 Gbytes
jumper		(4,092 cylinders)

3Remount your drive in the computer and replace the computer cover.

4Insert a bootable DOS diskette into drive A and turn on the computer. It should boot from drive A and automatically detect the new drive as a 2.1-Gbyte drive.

5Insert your DiscWizard diskette into drive A and type A:\DM. Then press ENTER. This runs the Disk Manager program.

6Follow the Disk Manager instructions to install the dynamic drive overlay and to partition and format your new drive to its full capacity.

7After Disk Manager is done, reboot your system. You should see the Disk Manager banner and be able to access the full capacity of your new drive.

The screen remains blank when you power up the system.

If the steps listed above do not remedy this problem, try the following:

•Make sure the monitor is plugged in and turned on.

•Check all cards.

•Make sure the video card is seated in its slot and secured with mounting screws.

•Turn off the computer and remove the drive host adapter. If the screen turns on after you reboot, the host adapter may be incompatible or defective. If so, see your dealer.

The system does not recognize the drive.

•Check all cables.

•Make sure the power supply is adequate for system needs.

•Reboot the computer and listen to make sure the drive motor starts up. If the drive is very quiet, it may be difficult to hear its discs reach operating speed. If the drive motor does not start up, recheck all drive cables.

•Verify that for each drive, a drive-type is listed in the system setup program.

•Try rebooting your computer by pressing the CTRL, ALT and DELETE keys simultaneously. If the drive is recognized after you reboot the system, the computer BIOS test may be completing before the drive is ready.

One solution is to slow the processor speed during startup. If your computer has a turbo switch, set it to slow speed before turning the computer on. If there is no turbo switch, you may be able to use keyboard commands; see your computer manual for details. After the computer is up and running, return the processor to the fast speed.

Another solution is to warm-boot your computer after every power-on.

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ST36530A, ST34520A, ST39140A specifications

Seagate has long been a cornerstone in the hard disk drive (HDD) sector, delivering storage solutions that cater to various computing needs. Among its notable offerings are the Seagate ST39140A, ST34520A, and ST36530A models. Each of these drives embodies Seagate's commitment to reliable performance, robust design, and cutting-edge technology.

The Seagate ST39140A, commonly recognized as the Barracuda 9, boasts a storage capacity of 9.1 GB, which was substantial in its time. Operating at a spindle speed of 7200 RPM, it provides rapid data access and improved overall system responsiveness. This drive utilizes an Ultra ATA/33 interface, facilitating a transfer rate of up to 33 MB/s. One of its standout features is the use of Fluid Dynamic Bearing (FDB) technology, allowing for quieter operation and enhanced longevity. This drive also includes a built-in error correction mechanism, ensuring data integrity and reliability, which are critical for both personal and business applications.

Looking toward the ST34520A, this model is also part of the Barracuda family but offers greater storage capacity at 4.5 GB. It operates at the same 7200 RPM speed but implements an Ultra ATA/66 interface, effectively doubling the data transfer potential to up to 66 MB/s. In terms of design, it incorporates advanced technology that enhances shock resistance, an essential feature for drives installed in mobile computing environments. The ST34520A was well-regarded for its efficiency, making it suitable for both desktop systems and servers that required reliable, high-capacity storage.

Meanwhile, the ST36530A serves as an excellent bridge between performance and capacity with 6.5 GB of storage. This model also maintains the 7200 RPM speed and features the Ultra ATA/33 interface, ensuring it delivers a consistent and reliable performance. Its design is tailored to meet the demands of both stationary and portable computing environments, making it an excellent choice for various applications.

In summary, Seagate’s ST39140A, ST34520A, and ST36530A drives excelled in their respective roles within the hard disk drive market, each offering unique features and technologies. Their combination of speed, capacity, and reliability made them popular choices in the late 1990s and early 2000s, showcasing Seagate’s legacy of innovation in data storage technologies. Whether catering to general consumers or technical applications, these models remain remembered for their contributions to the evolution of hard drive technology.