Re: USB flash memory not detected on startup
- From: "KM" <konstmor@xxxxxxxxxxxxxxxx>
- Date: Thu, 23 Feb 2006 11:22:53 -0800
Dominic,
Do you know how the same brand USB stick works with XP Pro? Does it also expose the problem?
One possible explanation...
Unfortunately, many USB mass storage device manufacturers do not follow properly protocols (USB MSC, SCSI2) while implementing their
device firmware.
XP itself has some fixes for some known devices but sometimes timing issues may be seen with some brands.
Since the XPe image you got there is not the same as XP Pro, booting time is different and etc., it may effect when controller
driver gets initialize and USB stack fires up. While the device is being plugged in before the boot, it may appear to not be working
(stalled or etc.) later.
--
=========
Regards,
KM
Im having a problem where I cant get USB flash discs to be consistenty
detected on start up.
Im using XPe Sp2 and a number of different makes of USB stick but they are
regularly not detected properly when the PC powers up, the Device manager
says that they are "Unknown Device" so I cannot access the files on the stick
until it is reinserted in the PC.
Does anyone have a fix for this or know what causes it.
.
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