A minor alarm for compact-flash was raised as below:

User@router> show chassis alarms 
<...>
2023-11-15 02:37:22 -06 Minor Host 0 compact-flash drive error

1. Routing-engine reported a minor alarm, when the compact-flash drive is not initialised properly.

Due to this, we would not be able to see compact-flash information in the hardware list:

User@router> show chassis alarms 

1 alarms currently active

Alarm time        Class Description
2023-11-15 02:37:22 -06 Minor Host 0 compact-flash drive error

Logs sample:
Nov 15 02:37:01 send: yellow alarm set, device Routing Engine 0, reason Host 0 compact-flash drive error

2. Compact flash would not be displayed in the "show chassis hardware detail" output:

Routing Engine 0 REV 05 740-051822 901628XXXX RE-S-1800x4
ada0 28496 MB StorFly - VSFA18PI100B P1X05004584804270785 Disk 1

<<<<< Missing Compact Flash
usb0 (addr 0.1) EHCI root HUB 0 Intel uhub0
usb1 (addr 0.2) product 0x0020 32 vendor 0x8087 uhub1
DIMM 0 D3DV1G1234-XXAA DIE REV-0 PCB REV-0 MFR ID-00
DIMM 1 D3DV1G1234-XXIA DIE REV-0 PCB REV-0 MFR ID-00
DIMM 2 D3DV1G1234-XX8IA DIE REV-0 PCB REV-0 MFR ID-00
DIMM 3 D3DV1G1234-XX8IA DIE REV-0 PCB REV-0 MFR ID-00
Routing Engine 1 REV 05 740-051822 90162XXXX RE-S-1800x4
ada0 28496 MB StorFly - VSFA18PI100A P1T05004493802150071 Disk 1
ada1 3998 MB VTDCFAPI004G-KC2 45850-1303 Compact Flash
usb0 (addr 0.1) EHCI root HUB 0 Intel uhub0
usb1 (addr 0.2) product 0x0020 32 vendor 0x8087 uhub1
DIMM 0 D3DV1G1234-XX8IA DIE REV-0 PCB REV-0 MFR ID-00
DIMM 1 D3DV1G1234-XX8IA DIE REV-0 PCB REV-0 MFR ID-00
DIMM 2 D3DV1G1234-XX8IA DIE REV-0 PCB REV-0 MFR ID-00
DIMM 3 D3DV1G1234-XX8IA DIE REV-0 PCB REV-0 MFR ID-00

This could be a hardware issue.

For recovery, we can try to reboot the RE routing-engine and check if the driver initialises properly. If the reboot does not solve the problem, then we need to replace the routing-engine.

2025-04-22 : minor update

2023-11-15 : Article Created