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Cannot boot Cisco 3850 out of rommon

KoosG
Level 1
Level 1

Good day,

My Cisco 3850 is stuck in rommon. When I power it up I do get the following error and it goes directly into rommon.

bs_open[8]: Unable to erase boot_block 0open

When I do a dir flash: I do see my files in the flash.

switch: dir flash:
Directory of flash:/

7745 drwx 4096 .
2 drwx 4096 ..
7746 -rw- 2097152 nvram_config
7747 -rw- 81992100 cat3k_caa-base.SPA.03.07.04E.pkg
7748 -rw- 5667516 cat3k_caa-drivers.SPA.03.07.04E.pkg
7749 -rw- 36656136 cat3k_caa-infra.SPA.03.07.04E.pkg
7750 -rw- 46349632 cat3k_caa-iosd-universalk9.SPA.152-3.E4.pkg
7751 -rw- 28904332 cat3k_caa-platform.SPA.03.07.04E.pkg
7752 -rw- 128582464 cat3k_caa-wcm.SPA.10.3.141.0.pkg
7753 -rw- 1236 packages.conf
7754 drwx 4096 virtual-instance
38721 drwx 4096 vman_fdb
54209 drwx 4096 dc_profile_dir
54211 drwx 4096 wnweb_store
7755 -rw- 1036 vlan.dat

1288658944 bytes available (359235584 bytes used)

But I cannot boot it out of rommon, there are no "boot" command available

? -- Present list of available commands
arp -- Show arp table or arp-resolve an address
cat -- Concatenate (type) file(s)
copy -- Copy a file
delete -- Delete file(s)
dir -- List files in directories
emergency-install -- Initiate Disaster Recovery
flash_init -- Initialize filesystem(s)
format -- Format a filesystem
fsck -- Check filesystem consistency
help -- Present list of available commands
mgmt_init -- initialize management port
mkdir -- Create dir(s)
more -- Concatenate (display) file(s)
ping -- Send ICMP ECHO_REQUEST packets to a network host
readrtc -- Read RTC
rename -- Rename a file
reset -- Reset the system
rmdir -- Delete empty dir(s)
set -- Set or display environment variables
set_bs -- Set attributes on a boot sector filesystem
set_param -- Set system parameters in flash
type -- Concatenate (type) file(s)
unset -- Unset one or more environment variables
version -- Display boot loader version
writertc -- Write RTC

5 Replies 5

Leo Laohoo
Hall of Fame
Hall of Fame

Post the complete output to the command "set".

KoosG
Level 1
Level 1

Here are the output of the set cmd.

switch: set
ABNORMAL_RESET_COUNT=0
ASIC_PCI_RESET=1
BAUD=9600
BOOT=flash:packages.conf
BOOT_LOADER_UPGRADE_DISABLE=1
BSI=0
CFG_MODEL_NUM=WS-C3850-48F-S
CLEI_CODE_NUMBER=IPM8E00ARC
CSR_PCIERST_DISCONNECTED=yes
ECI_CODE_NUMBER=470022
MAC_ADDR=2C:86:D2:80:99:00
MANUAL_BOOT=no
MODEL_NUM=WS-C3850-48P
MODEL_REVISION_NUM=AB0
MOTHERBOARD_ASSEMBLY_NUM=73-15800-08
MOTHERBOARD_REVISION_NUM=A0
MOTHERBOARD_SERIAL_NUM=FOC20503X6R
POE1_ASSEMBLY_NUM=73-16439-02
POE1_REVISION_NUM=A0
POE1_SERIAL_NUM=FOC20507UR4
POE2_ASSEMBLY_NUM=73-16439-02
POE2_REVISION_NUM=A0
POE2_SERIAL_NUM=FOC20507WMA
RANDOM_NUM=1853582600
RECOVERY_BUNDLE=sda9:cat3k_caa-recovery.bin
STKPWR_ASSEMBLY_NUM=73-11956-08
STKPWR_REVISION_NUM=B0
STKPWR_SERIAL_NUM=FOC20506PXJ
SWITCH_IGNORE_STARTUP_CFG=1
SWITCH_NUMBER=1
SYSTEM_SERIAL_NUM=FOC2051U0XD
TAN_NUM=800-43041-03
TAN_REVISION_NUMBER=A0
TEMPLATE=advanced
TERMLINES=0
USB_ASSEMBLY_NUM=73-16576-01
USB_REVISION_NUM=A0
USB_SERIAL_NUM=FOC204982UB
VERSION_ID=V07


@KoosG wrote:
SWITCH_IGNORE_STARTUP_CFG=1​

Please do "SWITCH_IGNORE_STARTUP_CFG=0" and then reboot. 

KoosG
Level 1
Level 1

Done and it still the same result:

Booting...
bs_open[8]: Unable to erase boot_block 0open: vb1:: I/O error

Interface GE 0 link down***ERROR: PHY link is down
Verification Error: bootloader failed self-verification!

switch:

WARNING:  The process below will wipe the config of the switch. 

Put the firmware into a USB flash drive and then use the command "emergency-install usbflash0:filename.bin".