Can I boot my computer from SCSI drive?

SCSI Drive Will my new SCSI drive boot my computer? or error message:

no ROM BIOS?

The drive will need to be partitioned and formatted for your computer’s operating system before it can be used as the boot drive. Follow the instructions in the operating system or computer manual for installing a new hard drive and loading the operating system.

SCSI boots from BIOS. Most SCSI controllers feature on-board ROM BIOS to controll the disk drive. Older SCSI controllers may use jumpers or a start up disk to access BIOS. Enable SCSI BIOS for the active partition, C:\, to be recognized. Using more than one SCSI controller? Choose only one to start up. Typically only one active partition is allowed each drive. If BIOS has support for removable disks as hard drives, choose:All Disks. Consult your SCSI controller or system guides.

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Case:The F area of the customer’s personal computer hard disk is gone, and there are many important information in it to restore it.Customers find data recovery through the Internet.After the telephone consultation, he immediately rushed to the data to restore Room 1309, Baibaihui Technology Building, No. 23, Xichi Road, Xihu District. Solution:After data recovery engineer…

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UNMOUNTABLE_BOOT_VOLUME Error Message

UNMOUNTABLE_BOOT_VOLUME After installing or upgrading Windows XP from Windows 95 or 98 an error message:
STOP 0x000000ED (0x aaaaaaaa ,0x bbbbbbbb ,0x cccccccc ,0x dddddddd ) UNMOUNTABLE_BOOT_VOLUME appears when Windows tries to load.

This error is generated by design through Microsoft to prevent any data loss during operation. By design this error can incur when:

  • A 40-wire cable is used to connect an Ultra ATA hard drive to an Ultra ATA hard disk controller.
  • Improper BIOS settings
  • A file system may be damaged and cannot be mounted.

To resolve this issue:

  1. Replace the 40-wire cable with an 80-wire Ultra ATA Cable
  2. In the BIOS load the “Fail Safe Default Settings”.
  3. Restart the computer. If it doesn’t correct the problem a file system may be damaged.

Repairing a Damaged File System

  1. Restart the computer with the XP install disk.
  2. Press R to select the Repair Option at the “Welcome to Setup” screen.
  3. Enter administrator password if prompted to do so.
  4. At the next prompt press 1 and Enter .
  5. This should bring you to the command prompt “C:\” or “C:\Windows”.
  6. Type chkdsk /r and press enter. This will scan the disk and repair any errors.
  7. Type fixboot X: where “X” is the drive that you are installing the operating system on.
  8. Restart the system. If Windows still errors repeat steps 1 thru 5.
  9. Type fixmbr at the command prompt.

If all the above steps fail you may run a low-level format on the drive using SeaTools. Run the Write Disk Pack. This process may take several hours depending on the size of the drive.

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Does USB 2.0 and USB 1.1 hardware work interchangeably?

USB Devices You may have heard that USB 2.0 is “backward-compatible” with USB 1.0/1.1 (Full-Speed USB). While that’s true, USB 1.1 is also forward-compatible with USB 2.0.

Whenever a system has USB 2.0 ports, you’ll find the “Enhanced” USB controller in Device Manager, but you will also find two other USB controllers. These two to mantain backward compatibility to USB 1.1 devices. Each USB 2.0 host actually has 3 chips onboard. The USB controller routes signals to the correct controller chip depending on how a device is recognized. Where a device is physically plugged in has no bearing on how it is routed. All ports on a USB 2.0 motherboard can host any USB devices at all as long as the system and devices are healthy.

The vast majority of USB 2.0 devices will work on older PCs and Macs. None should flat-out fail unless there are other issues with the system. Hi-Speed USB devices will revert to Full-Speed operation when connected this way. Understand that Hi-Speed is at least ten times faster than Full-Speed in actual operation, so the speed difference is quite noticeable.

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