On 4/26/2007 9:54 AM On a whim, DJ Olly _ DJ Pulse pounded out on the
keyboard
Hi, i have a 250GB Buffallo external hard drive, i partitioned it as follows
NTFS 160GB E: drive and a 40GB FAT32 drive
when i open my computer sometimes they do not appear, why is this?
thanks olly
Hi Olly,
This is a long shot, but by chance do you use Daemon Tools, Alcohol
120%? Check the folders \windows\system32 OR \windows\system32\drivers
for a filed named Sptd.sys. If you have it, rename it to Sptd.sys.old .
Some other apps load these tools to run. If you delete or rename this
file Dameon Tools (or other program) will not function properly, thereby
whatever app may be using DT. In Dameon Tools you can repair this
file... but then you will be back in this boat again!
Here is a list of other things to try:
1. Access Disk Management and see if the USB device is listed. If so,
and there's no drive letter assigned, see if you can assign a drive
letter to the device.
2. If the USB device is listed in Disk Management with an assigned drive
letter, right-click on its listing and select Explore from the submenu.
Hopefully, Windows Explorer will open and the device will be listed.
3. Connect the USB device *directly* to a USB port on the computer, not
via a USB hub. Try different USB ports should your computer have
multiple ports.
4. Avoid using a USB extension cable.
5. Try connecting a USB device (that does not contain an auxiliary power
supply) to a USB port both before and after the boot operation.
6. Where a USB (or Firewire) external HDD is involved, access Device
Manager, highlight the Disk drives listing and click on the Action menu
item and then the "Scan for hardware changes" sub-menu item. Do the same
in Disk Management > Action > Rescan disks.
7. Try alternate powering on/off methods. If the USB device contains its
own power supply, try booting up with its power on, then try powering on
only *after* the system has booted to a Desktop.
8. Try a different USB cable.
9. In the USB controllers section of Device Manager, uninstall all the
USB controllers listed and reboot.
10. If the device in question is not a commercial USB external HDD but
rather one in which you installed a HDD in a USB enclosure, jumper the
HDD as Master (or Single if the HDD is a Western Digital disk). A number
of users have reported that jumper configuration corrected their
non-recognition problem. In my own experience it didn't seem to matter
how a USB external HDD was jumpered. But it may be worth a try.
11. If the device in question is a USB external HDD, first check out the
HDD with the hard drive manufacturer's diagnostic utility. If it checks
out OK, and you can remove the HDD from its enclosure (without voiding
any applicable warranty), do so and install the HDD as an internal HDD
to determine if there are problems with the drive.
12. If the USB device is connected to a USB 2.0 PCI card, try changing
the PCI slot to which it's currently connected to another one.
13. Access the website of the manufacturer of the USB device to
determine if there's any firmware update or info re the problem you're
experiencing or there's any possibility that the USB enclosure itself
might be defective.
14. Determine from the manufacturer of your motherboard whether there's
a BIOS upgrade affecting USB device recognition.
Report back,
--
Terry
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