Damage to the /devices and /dev directories can occur if the driver crashes during attach(9E). If either directory is damaged, you can rebuild the directory by booting the system and running fsck(1M) to repair the damaged root file system. The root file system can then be mounted. Recreate the /devices and /dev directories by running devfsadm(1M) and specifying the /devices directory on the mounted disk.
The following example shows how to repair a damaged root file system on a SPARC system. In this example, the damaged disk is /dev/dsk/c0t3d0s0, and an alternate boot disk is /dev/dsk/c0t1d0s0.Example 127 Recovering a Damaged Device Directory
ok boot disk1 ... Rebooting with command: boot kernel.test/sparcv9/unix Boot device: /sbus@1f,0/espdma@e,8400000/esp@e,8800000/sd@31,0:a File and \ args: kernel.test/sparcv9/unix ... # fsck /dev/dsk/c0t3d0s0** /dev/dsk/c0t3d0s0 ** Last Mounted on / ** Phase 1 - Check Blocks and Sizes ** Phase 2 - Check Pathnames ** Phase 3 - Check Connectivity ** Phase 4 - Check Reference Counts ** Phase 5 - Check Cyl groups 1478 files, 9922 used, 29261 free (141 frags, 3640 blocks, 0.4% fragmentation) # mount /dev/dsk/c0t3d0s0 /mnt # devfsadm -r /mnt