mkdir read only file system from Mountroot

[jaymax]

FreeBSD 9.2 on 138x.

I had cause to add hardware, a SATA controller and SATA drives. /etc/fstab apparently reshuffled and culled. The system booted w/ with a mountroot prompt. I was able to mount root from lsdev information and shell provided.

Attempts (from shell /) to mkdir -p <mountpoints> for other devices fail with

mkdir read only file system

Attempts to change permissions fail too, although logged in as root, according to whoami:
ls -aqxFl

drwxr-xr-x      18root    wheel      1024      May 1     12:50      ./

Could someone suggest a bump out of this morass?

Thanks!

 

[kpa]

The standard way to remount the root filesystem as read/write is: mount -u /.

While you're at it, migrate to using labels for the filesystems to avoid similar problems in the future: http://www.wonkity.com/~wblock/docs/html/labels.html