nec dvdrw problem

[Stella Korakaki]

Loipon, 

    elega oti exw ena dvd-rom(hdd) kai ena dvdrw(hdc) nec (nd-3500AG)
egkatestimena se debian sarge(2.6.11). Mexri prin
to teleytaio reboot kai ta dio douleuane teleia.( Den exw kanei allages
se kernel i pouthena allou).

Ksafnika de mou blepei to  dvdrw. Sto /proc/ide
den yparxei to  /dev/hdc kai fisika kai na to dimiourgisw de kanei
tipota.

To bios vlepei to dvdrw. Apo to  dvdrw mporw!
kai bootarw me knoppix alla an bootarw me knoppix apo to
dvd-rom pali den blepei to dvdrw moy.

Sto dmesg yparxei kati endiaferon:

Probing IDE interface ide1...
ide1: Wait for ready failed before probe !
hdd: DV-516E, ATAPI CD/DVD-ROM drive
ide1 at 0x170-0x177,0x376 on irq 15

Kamia idea?
An prokeitai gia upgrade sto firmware toy dvdrw pws tha to kanw ayto?
Eida sto site tis nec firmwares me installation se win mono.

thnx

Stella