Autor: latet (no-spam_at_no-spam.pl)
Data: Sun 14 Dec 2003 - 15:17:00 MET
> http://www.microsoft.com/whdc/hwdev/tech/storage/IDE-DMA.mspx
Ciekawe rzeczy tam piszą:
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For repeated DMA errors. Windows XP will turn off DMA mode for a device
after encountering certain errors during data transfer operations. If more
that six DMA transfer timeouts occur, Windows will turn off DMA and use only
PIO mode on that device.
In this case, the user cannot turn on DMA for this device. The only option
for the user who wants to enable DMA mode is to uninstall and reinstall the
device.
Windows XP downgrades the Ultra DMA transfer mode after receiving more than
six CRC errors. Whenever possible, the operating system will step down one
UDMA mode at a time (from UDMA mode 4 to UDMA mode 3, and so on).
If the mini-IDE driver for the device does not support stepping down
transfer modes, or if the device is running UDMA mode 0, Windows XP will
step down to PIO mode after encountering six or more CRC errors. In this
case, a system reboot should restore the original DMA mode settings.
All CRC and timeout errors are logged in the system event log. These types
of errors could be caused by improper mounting or improper cabling (for
example, 40-pin instead of 80-pin cable). Or such errors could indicate
imminent hardware failure, for example, in a hard drive or chipset.
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Tak moglo byc u mnie, bo mimo kabla 40-pin BIOS i WinXP
ustawial DMA-4, a to nie moze dobrze dzialać.
Teraz już wymusiłem w BIOS DMA-2 i WInXP to respektuje,
wieć powinno byc OK.
No, ale nie musi - bo przecież przedtem zdegradował aż do PIO,
a z tego co piszą, powinien tylko do DMA-2.
Pozdrawiam,
latet
To archiwum zostało wygenerowane przez hypermail 2.1.7 : Wed 19 May 2004 - 11:55:05 MET DST