When The Compact Flash Is Removed From The Boot List; Determine Why Compact Flash Did Not Mount - Juniper JUNOS - NETWORK OPERATION GUIDE REV1 Network Operation Manual

When the Compact Flash Is Removed from the Boot List

You can have a compact flash error when conditions, such as a HARD READ error
occurs. When the compact flash is removed from the boot list, the following
message displays you log in to the router:
login: user
--- JUNOS 6.0R1.6 built 2003-09-24 04:06:27 UTC
---
--- NOTICE: System is running on alternate media device
---
user@host>
Check to see which file system is mounted by using the following CLI command:
Action
user@host> show system storage
Sample Output
user@host> show system storage
Filesystem
/dev/ad1s1a
devfs
/dev/vn0
devfs
/dev/vn1
/packages/mnt/jkernel-6.0R1.6
/dev/vn2
/packages/mnt/jpfe-M160-6.0R1.6
/dev/vn3
/packages/mnt/jdocs-6.0R1.6
/dev/vn4
/packages/mnt/jroute-6.0R1.6
/dev/vn5
/packages/mnt/jcrypto-6.0R1.6
mfs:139
/dev/ad1s1e
procfs
/dev/ad1s1f
The command output will not show ad0 (the compact-flash) mounted, but instead,
What It Means
ad1 (the hard disk) has the root file system mounted.

Determine Why Compact Flash Did Not Mount

To determine why the compact-flash did not get mounted, use the following CLI
Action
command:
user@host> show system boot-messages | match "ad0|ad1"
user@host> show system boot-messages | match "ad0|ad1"
ad0: not attached, missing in Boot List
ad1: 28615MB <FUJITSU MHS2030AT> [58140/16/63] at ata0-slave using BIOSDMA
Mounting root from ufs:/dev/ad1s1a
The command output shows that the compact flash ( ad0 ) was removed from the
What It Means
boot list.
512-blocks Used
218690 56502
32 32
18316 18316
32 32
45448 45448
20532 20532
3580 3580
20728 20728
9256 9256
4064278 2
24234 4
8 8
52492630 7988510 40304710
Chapter 14: Monitoring the Routing Engine
(/dev/ad1s1a).
Avail Capacity Mounted on
144694 28% /
0 100% /dev/
0 100% /packages/mnt/jbase
0 100% /dev/
0 100%
0 100%
0 100%
0 100%
0 100%
3739134 0% /tmp
22292 0% /config
0 100% /proc
17% /var
Verifying Routing Engine Failure
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