PowerEdge: Red Hat system booting into maintenance mode due to the vfat module blacklisted

Summary: Red Hat system not booting and goes into maintenance mode due to the Virtual File Allocation Table (vfat) module blacklisted.

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.
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Symptoms

The system goes into maintenance mode during Linux boot-up and asking for the root password.
If the system has other kernel versions installed, this issue can happen on any kernel version.

Linux Maintenance Mode 
 

Cause

The output of the command below indicates that the 'vfat' module has been blacklisted.

[root@localhost ~]# grep vfat /etc/modprobe．d/*
/etc/modprobe.d/CIS.conf:install vfat /bin/true

After entering the root password, run the mount -av command and the following error is observed in /boot/efi.

[root@localhost ~]# mount -av
/                   :ignored
/boot               :already mounted
mount: /boot/efi: unknown filesystem type 'vfat'.
none                :ignored

Resolution

Place a comment (# key) at the start of the following line in the modprobe configuration file:

[root@localhost ~]# cat /etc/modprobe.d/CIS.conf | grep vfat
#install vfat /bin/true

 

Run the command below to ensure that the vfat module can be loaded:

[root@loca1host ~]# modprobe -vvv vfat
mdprobe：INFO：custom logging function 0×557adc8b7e50 registered
insmod /lib/modules/4.18.0.e18.×86_64/kernel/fS/fat/vfat.ko.xz
modprobe：INFO：context 0×557adcd944a0 released

 

Next, check if the vfat module is loaded:

[root@localhost ~·]# lsmod | grep vfat
vfat                              20480    0
fat                               81920    1   vfat


Then, mount or remount the file system using the "mount -av":

[root@localhost ~]# mount -av
/                              : ignored
/boot                          : already mounted mount:
/boot/efi                      : successfully mounted 
none                           : ignored


Once /boot/efi is mounted, reboot the system, and it can boot up successfully.

Affected Products

SUSE Linux Enterprise Server 12, Red Hat Enterprise Linux Version 7, Red Hat Enterprise Linux Version 9, Red Hat Enterprise Linux Version 8, SUSE Linux Enterprise Server 15

Products

PowerEdge XR2, Poweredge C4140, PowerEdge C6420, PowerEdge C6520, PowerEdge C6525, PowerEdge C6615, PowerEdge C6620, PowerEdge FC640, PowerEdge M640, PowerEdge M640 (for PE VRTX), PowerEdge MX5016s, PowerEdge MX740C, PowerEdge MX750c , PowerEdge MX760c, PowerEdge MX840C, PowerEdge R240, PowerEdge R250, PowerEdge R260, PowerEdge R340, PowerEdge R350, PowerEdge R360, PowerEdge R440, PowerEdge R450, PowerEdge R540, PowerEdge R550, PowerEdge R640, PowerEdge R6415, PowerEdge R650, PowerEdge R650xs, PowerEdge R6515, PowerEdge R6525, PowerEdge R660, PowerEdge R660xs, PowerEdge R6615, PowerEdge R6625, PowerEdge R740, PowerEdge R740XD, PowerEdge R740XD2, PowerEdge R7415, PowerEdge R7425, PowerEdge R750, PowerEdge R750XA, PowerEdge R750xs, PowerEdge R7515, PowerEdge R7525, PowerEdge R760, PowerEdge R760XA, PowerEdge R760xd2, PowerEdge R760xs, PowerEdge R7615, PowerEdge R7625, PowerEdge R840, PowerEdge R860, PowerEdge R940, PowerEdge R940xa, PowerEdge R960, PowerEdge T140, PowerEdge T150, PowerEdge T160, PowerEdge T340, PowerEdge T350, PowerEdge T360, PowerEdge T440, PowerEdge T550, PowerEdge T560, PowerEdge T640, PowerEdge XE2420, PowerEdge XE7420, PowerEdge XE7440, PowerEdge XE8545, PowerEdge XE8640, PowerEdge XE9640, PowerEdge XE9680, PowerEdge XR11, PowerEdge XR12 ...
Article Properties
Article Number: 000211569
Article Type: Solution
Last Modified: 11 Dec 2024
Version:  2
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