Created on
02-04-2024
09:44 PM
Edited on
09-16-2025
03:53 AM
By
Jean-Philippe_P
Description
This article provides troubleshooting steps when the hardware appliance disk is showing as offline and is unable to boot into the system.
Scope
FortiManager, FortiAnalyzer.
Solution
The error message:
'There are offline or missing virtual drives with preserved cache' will be displayed on the hardware appliance console:
Solution:
On the Configuration utility page -> VD Mgmt -> Select first line 'AVAGO MegaRaid …' -> Press F2 on the keyboard -> Clear Configuration
Note: It may require connecting the external keyboard to the hardware appliance to parse the F2 key correctly to the appliance.
Select Yes to clear the configuration:
On the configuration utility page, it will now show all hard drives as 'Unconfigured Drives'.
During the reboot, it will start booting into the OS/image and start initializing:
If Raid level & Status: Unavailable and Disk Status: Unused, proceed to format the disk via CLI:
Format disk via CLI; This will reboot the appliance:
[FortiAnalyzer]# execute format <disk | disk-ext3 | disk-ext4> <RAID level> [<group>]
During the reboot, verify if the following line is displayed on the console:
'/var' is not mounted
If /var is not mounted, proceed to run the command below to mount the file system correctly:
[FortiAnalyzer]# diagnose system fsck harddisk
Log in to the GUI -> Raid Management and verify if all the statuses are good.
The information was very helpful, thank you.
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