系统启动的错误信息：Read-only file system

飞天二狭

When the system was starting up, I noticed all these "...: Read-only file
system" errors. eg:

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/etc/rc.sysinit: /var/run/utmp: Read-only file system
touch: creating `/var/log/wtmp': Read-only file system
                                                chmod: changing permissions of `/var/run/
utmp': Read-only file system
                                chmod: changing permissions of `/var/log/wtmp': Read-
only file system
Enabling swap space:                                                [  OK  ]
/etc/rc.sysinit: /var/log/dmesg: Read-only file system
                                                                        mv: cannot move `/var/l
og/ksysms.5' to `/var/log/ksyms.6': Read-only file system
                                                                mv: cannot move `/var/log/ksy
ms.4' to `/var/log/ksyms.5': Read-only file system
                                                        /etc/rc.sysinit: /var/log/ksyms.0:
Read-only file system
                                                touch: creating `/.autofsck': Read-only f
ile system
----------------------------------------------------------------------------
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请问是什么原因导致的。

飞天二狭

哪位高手看看吧！