B:DOS Space > 1GB

The default disk head mapping for Initio SCSI host adapter is 64 heads and 32 sectors. Under this configuration, the MS-DOS limit is 1024 cylinders per drive. This translates to a maximum accessible capacity of 1 GBytes per drive. By changing the head mapping to 255 heads and 63 sectors, the "DOS Space > 1GB" option can support disk capacities up to 8 GBytes under MS-DOS.

Warning: If you have already installed the operating system on your hard drives, changing the head mapping will corrupt your files and cause other unexpected problems. Before changing any "DOS Space > 1GB" option setting, please back up your disk drives. Then you should run the FDISK utility to delete all the partitions on your selected disk drive. At this point you can switch the setting, reinstall the operating system, and restore your backed up files.

All device drivers for the INI-9100U/9100UW Host Adapter will support different head mappings based on the setting of "DOS Space > 1GB" option.

MS-DOS, OS/2 & Windows NT

Under MS-DOS, OS/2 & Windows NT, we recommend you enable "DOS Space > 1GB" option if your SCSI hard disk has more than 1 GByte capacity.

NetWare 386

NetWare does not have a 1 GByte barrier. Therefore, the "DOS Space > 1GB" option is not required to be enabled; however, you must verify the boot partition is located below 19100UW4 cylinders. If the size of your boot partition is greater than 1 GByte or the location of the boot partition is beyond 1 GByte, you should enable the "DOS Space > 1GB" option.

SCO UNIX

SCO UNIX does not have a 1 GByte barrier. Therefore, the "DOS Space > 1GB" option is not required to be enabled; however, you must make sure the root file system is located below 19100UW4 cylinders in order to perform the kernel boot routines. If the size of the root file system is greater than 1 GByte or the location of root file system is beyond 1 GByte, you should enable the "DOS Space > 1GB" option.

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INI-9100UW, INI-9100U specifications

The Initio INI-9100UW and INI-9100U are high-performance SCSI (Small Computer System Interface) controllers designed to provide exceptional data transfer rates and efficient connectivity for various storage solutions. These controllers are particularly favored in environments that demand reliable and fast data access, including servers and workstations.

One of the standout features of the INI-9100 series is its ability to support ultra-wide SCSI, allowing for data transfer rates of up to 40 MB/s. This speed is crucial for applications requiring rapid data movement, such as databases, streaming applications, and intensive computing tasks. The INI-9100UW variant extends this capability with its support for 68-pin connectors, which further enhances data throughput by allowing for a greater number of devices to be connected simultaneously.

Both the INI-9100UW and INI-9100U are built on a robust architecture, which includes integrated support for a wide range of SCSI devices. This includes hard disk drives, CD-ROMs, and tape drives, making these controllers versatile solutions for both modern and legacy systems. Their compatibility with various operating systems, including Windows and Linux, ensures seamless integration into existing setups.

Furthermore, the Initio controllers employ advanced technologies such as asynchronous transfers and cycle stealing, which minimize CPU load and allow the system to handle multiple tasks simultaneously without bottlenecks. This makes them particularly advantageous in multitasking environments.

Another key characteristic of the INI-9100 series is their dedicated onboard BIOS, which simplifies device management and setup processes. Users can easily configure the controllers for optimal performance using the user-friendly interface provided by the BIOS.

In summary, the Initio INI-9100UW and INI-9100U are powerful SCSI controllers that offer high-speed data transfer capabilities, robust architecture, and versatile compatibility with various SCSI devices. Their advanced technologies and user-friendly features make them ideal solutions for environments requiring reliable and efficient data access. As data storage needs continue to evolve, the INI-9100 series remains a valuable asset for both enterprise-level and individual users seeking to enhance their storage solutions.
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