dvdrw怪怪無法抹除

好奇怪阿，用k3b跟brasero都無法抹除我的dvdrw換了幾片都一樣，只好求google大神，找到兩個方法

dvd+rw-format -f /dev/cdrom
* BD/DVD±RW/-RAM format utility by , version 7.0.
* 4.7GB DVD-RW media in Sequential mode detected.
* formatting .:-( track is formatted for fixed packet size
哦哦失敗了…

還有另一種方法
cdrecord dev=/dev/cdrom blank=fast
wodim: Operation not permitted. Warning: Cannot raise RLIMIT_MEMLOCK limits.Device type : Removable CD-ROM
Version : 5
Response Format: 2
Capabilities :
Vendor_info : 'PIONEER '
Identification : 'DVD-RW DVR-109 '
Revision : '1.58'
Device seems to be: Generic mmc2 DVD-R/DVD-RW.
Using generic SCSI-3/mmc DVD-R(W) driver (mmc_mdvd).
Driver flags : SWABAUDIO BURNFREE
Supported modes: PACKET SAO
HINT: use dvd+rw-mediainfo from dvd+rw-tools for information extraction.
Speed set to 5540 KB/s
Starting to write CD/DVD at speed 4.0 in real BLANK mode for single session.
Last chance to quit, starting real write i 0 seconds. Operation starts.

嘿嘿成功了哦…可以抹除了也可以正常寫入資料了。

不過不怎麼高興，DVD-RW DVR-109本來只是托盤不能收回去而已，但被我加上針車油在齒輪上，整個托盤收也收不起來、開也開不了，猜開來研究一下，把裡面一條小排線從晶體上弄掉，在重抽回去重開機後，燒錄軟體找不到我的燒錄機了，只好正式說拜拜XD

9.23.2009
沒想到今天可以正常用這指令抹除了！

dvd+rw-format -f /dev/sr0

* BD/DVD±RW/-RAM format utility by , version 7.1.
* 4.7GB DVD-RW media in Sequential mode detected.
* formatting 100.0/