Case:The RAID information on the server is wrong, which makes it impossible to access the partition.After the failure, the customer consulted HP engineers, prompting to operate carefully, first find a third -party data recovery company help, and then perform array repair.The customer then contacted our engineers and did not perform other operations. We immediately carried…
Drives not showing up in post can be caused by a variety of problems. Please check the
following:
• Are you using the latest BIOS and firmware for the server board and the latest firmware
for the RAID card?
• System memory limitations limit the number and size of option ROMs that can be used
in the system. If you place too many adapters in the system, or the ROMs on the
adapters you have installed take up too much space in memory, the option ROM on
your RAID controller may not expand correctly and will not show the hard drives that are
connected to it. Try turning off the expansion ROMs for any on-board device that is not
being used. For example, if your server board includes a SCSI controller that is not
being used, disable this SCSI controller in BIOS setup. For a list of tested peripherals
with the Intel RAID controller, download the Tested Operating System and Adapter List
from http://support.intel.com/support/motherboards/server.
• If you are using a Zero Channel Card that utilizes the on board IO controller, such as an
on-board SCSI or Serial ATA controller, the Option ROM scan for the on-board device
must be enabled. If it is not enabled, drives connected to that device will not show up
during POST.
• Confirm that the drive power cables are firmly connected. If you are using a chassis
with a backplane, make sure the power and SCSI cables are properly applied to the
backplane and the hard drives are firmly seated in the backplane.
• Check your SCSI ID numbers. SCSI devices must each have a unique ID on the SCSI
bus. This number is set with jumpers on the device. ID numbers should be set starting
at 0 and they must be set lower than 8 if booting from the drive. If you are using a
server chassis with a backplane, the device IDs are usually automatically set by the
backplane, but may be manually configurable.
• Check for proper termination on the SCSI bus. Intel RAID cards are by default autoterminating.
If your hard drives still do not show during post, please call your customer support
representative. Note the following information and have it ready to assist the support engineer:
• Model number and firmware revision of the RAID controller you are using.
• Manufacturer and model number of other add-in adapters installed in your system.
• Manufacturer and model number of hard drives installed in the system.
• Identify the type of termination used for the card.
• The SCSI IDs of the devices on your SCSI bus.
• The number and type of SCSI channels.
• Manufacturer and model of the memory used in the system and on the RAID controller
and whether it is on the tested memory list.
Case:Customers’ desktop computer suddenly appeared to be unable to enter the system under normal use, and the Seagate 500GB desktop hard disk was found to be found to be identified by the computer. Solution:First detect whether it is a firmware problem, enter the instruction, cut off the electrometer at the level 1, and then lift…
Case:Customers described normally before, and reported to the hard disk after the power was turned on yesterday.However, there are important data in it to be backup, and the customer immediately contacts the laptop after the Lenovo customer contacts the Lenovo after -sales department.After -sales detection of hard disk physical faults, the hard disk cannot be…
I am trying to install Windows 7 Professional x64 from a bootable USB stick.I have used the Windows 7 USB DVD Download Tool to create the media from an ISO. The machine boots from USB fine, and enters the Windows installation wizard but then I get an error stating: A required CD/DVD drive device…
HDD Printed circuit board (PCB) with board number 2060-701622-000 is usually used on these Western Digital hard disk drives: WD1001FALS-00J7B1, DCM HANNNT2CB, Western Digital 1TB SATA 3.5 Hard Drive; WD1001FALS-00J7B1, DCM HBNNHV2CA, Western Digital 1TB SATA 3.5 Hard Drive; WD1001FALS-00J7B1, DCM HBNNHV2AB, Western Digital 1TB SATA 3.5 Hard Drive; WD1001FALS-00J7B1, DCM HARNHV2CB, Western Digital 1TB…
Case:After the reinstallation system is over, I found that the data in the hard disk was gone, and the partitions have changed. It turned out to be 4 districts. Now it is 3 districts. There are some personal data that is more important to recover the data.Customers immediately found the data recovery center on the…
There is little that you can do to control or configure USB devices. You can usually isolate most USB problems to one of these conditions.
Malfunctioning or Incorrectly Configured Hardware If you plug a malfunctioning or incorrectly configured USB Storage Device into a USB port, the computer may stop responding (hang). Most of the time you need only physically turn off the computer, wait a moment, then back on to reset the bus. If another computer is available that you know is working correctly; plug the Personal Storage Device or PCI card into that computer to see if the problem follows or goes away.
Mismatched Cabling There are two types of USB cables, high speed and low speed. Low-speed cables (USB1.0) differ from high-speed cables (USB2) primarily in signal shielding. If you plug a Maxtor USB2 Personal storage device or Maxtor USB2 PCI accessory using a low-speed cable, this can cause signal distortion. Verify the entire USB chain is working correctly. Be certain that a device that requires power from the hub (mouse or keyboard) is not plugged into the chain on the other side of a non-powered hub. If the USB port is powered (PCI or embedded chip-set), verify the computer power supply is working properly.
Incorrectly Configured Root Hub USB controllers require a dedicated IRQ (system interrupt) assignment. The PCI specification allows the motherboard manufacturer to determine the IRQ assignment for each PCI device. Usually IRQ 9 is assigned. The IRQ line is assigned in the computer’s BIOS. Check with the motherboard / computer manufacturer for the specific PCI configuration details of your system.
There are several ways to enter the setup depending on your computer make and model. Usually on initial power up there is a message stating Press DEL to enter Setup or similar phrase. If you are not sure how to enter setup, see the system manual or seek assistance from the BIOS or motherboard manufacturer.
Go to the Integrated Peripherals section and disable both Serial ports if you are not using them. Go to the PnP/PCI section and enable PnP OS, Auto and Reset Configuration Data. This releases the BIOS lock on system resources –allows operating system control. Go to the Power Management section. Disable all power management. This is a common source of intermittent errors.
Shut down the computer and unplug any USB devices. Re-start the computer and immediately enter Windows Safe Mode (F8 at start-up). DO NOT allow the computer to boot fully to the operating system. If this happens, press ctrl /alt /delete at the same time to restart the computer; re-enter Safe Mode. Go to Add/Remove Programs. Remove all references to USB software. Open Device Manager. Remove the USB root hub and any PCI USB host controllers. Remove all duplicate or erroneous USB drivers. Windows will reinstall genuine device drivers. If you see SB16 emulation drivers (DOS sound support), disable them (do not remove) from this hardware profile. Most don’t need them. While still in Safe Mode, go to System Devices and disable Advanced Power Management support. Remove any drivers for device sharing. Windows should reinstall the drivers automatically. Now you have freed up two or three IRQs and reset Windows IRQ assignments. Reboot the computer and re-install devices.
If this article does not describe your issue, click here to view the Microsoft Windows 98 and Windows Me Hardware/Device Driver Troubleshooting Resource Center.
Case:The operating system is Windows, and the file system is NTFS/FAT, using 500GB of Western data hard disk; when the computer reinstalls the system, it prompts “General Error in Reading Drive C”” message. After testing
Recover your lost data from various storage devices and file systems.
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Publisher’s description:
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Useful Links:
Publisher profile:
Chengdu Yiwo Tech Development, established on August 12th, 2004, is a professional Data Recovery, Backup and Data Security company. Ever since its foundation, Chengdu Yiwo Tech Development has provided well-received service for a host number of customers home and abroad.
