分区错误,特殊设备不存在

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ubuntu

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问题

我在ubuntu上有一个320 GB的硬盘,但无法安装第2个硬盘(ext3类型的sda7和sda8)驱动器。

输出为 sudo mount /dev/sda7 /home/newfolder -t ext3


mount: special device /dev/sda7 does not exist



/dev/包含下列内容:


 sda sda1 sda5 sda6



但是,GParted显示sda7和sda8:GParted

blkid的输出:


/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的输出:


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的输出:


# /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).


#


# <file system> <mount point> <type> <options> <dump> <pass>


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的输出:

 
control




答案1

你最近对磁盘分区了?

如果是这样,你需要告诉内核


sudo blockdev --rereadpt



以前是sfdisk -R,但sfdisk在版本2.26中丢弃了-R


答案2

检查lv状态:

 
lvscan



修复

 
vgchange -ay





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