挂载错误,不存在特殊设备
我在ubuntu 12.04 64位上有一个320 GB的硬盘。
我的硬盘的2个驱动器(ext3型的sda7和sda8)无法安装。
输出sudo mount /dev/sda7 /home/newfolder -t ext3
:
mount: special device /dev/sda7 does not exist
/dev/
包含以下内容:
sda sda1 sda5 sda6
但是GParted显示了sda7和sda8:
blkid
输出:
/dev/sda1: UUID="a898f3ad-11d9-4dbb-9ea8-71a819dc8f70" TYPE="ext4" /dev/sda5: UUID="998c7c6f-5ff8-426c-83d4-1a309b7cdc4f" TYPE="swap" /dev/sda6: UUID="da0460d0-714e-40ae-b88b-a0deca87087c" TYPE="ext4" /dev/sdb1: LABEL="FLASH DRIVE" UUID="8A24-B5CD" TYPE="vfat"
fdisk -l
输出:
Disk /dev/sda: 320.1 GB, 320071851520 bytes 255 heads, 63 sectors/track, 38913 cylinders, total 625140335 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x17ea17ea Device Boot Start End Blocks Id System /dev/sda1 * 2048 194559 96256 83 Linux /dev/sda2 196607 625121279 312462336+ f W95 Ext'd (LBA) /dev/sda5 196608 8007679 3905536 82 Linux swap / Solaris /dev/sda6 8009728 61431807 26711040 83 Linux /dev/sda7 61432623 337911209 138239293+ 83 Linux /dev/sda8 337911273 625121279 143605003+ 83 Linux
cat /etc/fstab
输出:
# /etc/fstab: static file system information. # # Use 'blkid' to print the universally unique identifier for a # device; this may be used with UUID= as a more robust way to name devices # that works even if disks are added and removed. See fstab(5). # # proc /proc proc nodev,noexec,nosuid 0 0 # / was on /dev/sda8 during installation UUID=da0460d0-714e-40ae-b88b-a0deca87087c / ext4 errors=remount-ro 0 1 # /boot was on /dev/sda1 during installation UUID=a898f3ad-11d9-4dbb-9ea8-71a819dc8f70 /boot ext4 defaults 0 2 # swap was on /dev/sda7 during installation UUID=998c7c6f-5ff8-426c-83d4-1a309b7cdc4f none swap sw 0 0 /dev/fd0 /media/floppy0 auto rw,user,noauto,exec,utf8 0 0
ls /dev/mapper
输出:
control
你最近重新分区了那个磁盘吗? 这是我脑海中唯一可能导致内核对分区布局的理解与fdisk不同的东西。
如果是这样,您需要告诉内核重新读取分区表
sudo blockdev --rereadpt
(这曾经是sfdisk -R
,但sfdisk
在版本2.26中删除了-R
。)
如果您已安装该磁盘的任何分区,则可能会失败(带有错误消息)。 卸下它们然后再试一次。 有时这是不可能的(例如,当您的根分区位于同一磁盘上时),而您必须重新启动。
(实际上有一种方法可以强制内核重新读取分区表,如果你没有改变任何已安装分区的大小或位置,这应该足够安全,但我不记得确切的命令我想它涉及partx或kpartx。)
检查lv状态:
lvscan
检查INACTIVE是否与您缺少的相同。
要修复do vgchange:
vgchange -ay