由于某种原因，我的 dvd 无法以读/写方式挂载，尽管驱动器和磁盘支持它。我知道这应该可以工作，因为我以前也像这样写入磁盘。我不知道我做了什么改变。以下是输出sudo lshw -class disk
*-disk
description: ATA Disk
product: WDC WD10EZEX-00W
vendor: Western Digital
physical id: 0.0.0
bus info: scsi@4:0.0.0
logical name: /dev/sda
version: 1A01
serial: ****************
size: 931GiB (1TB)
capabilities: gpt-1.00 partitioned partitioned:gpt
configuration: ansiversion=5 guid=ac76fd2f-dd87-48b5-aa5a-a705e2393abc logicalsectorsize=512 sectorsize=4096
*-cdrom
description: DVD-RAM writer
product: CDDVDW SH-216BB
vendor: hp
physical id: 0.0.0
bus info: scsi@5:0.0.0
logical name: /dev/cdrom
logical name: /dev/cdrw
logical name: /dev/dvd
logical name: /dev/dvdrw
logical name: /dev/sr0
logical name: /media/username/Debian 8.6.0 i386 1
version: HE50
capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram
configuration: ansiversion=5 mount.fstype=iso9660 mount.options=ro,nosuid,nodev,relatime,uid=1000,gid=1000,iocharset=utf8,mode=0400,dmode=0500 state=mounted status=ready
*-medium
physical id: 0
logical name: /dev/cdrom
logical name: /media/username/Debian 8.6.0 i386 1
capabilities: partitioned partitioned:dos
configuration: mount.fstype=iso9660 mount.options=ro,nosuid,nodev,relatime,uid=1000,gid=1000,iocharset=utf8,mode=0400,dmode=0500 signature=425ed49e state=mounted
我意识到其中mount.options说*-cdrom，ro但我不知道如何改变它。