mount: unknown filesystem type 'vfat' [SOLVED]

[muc-gentoo]

when mounting an USB stick with "sudo mount -t vfat /dev/sdb1 /mnt/usbdir" I am getting error "mount: unknown filesystem type 'vfat'", although kernel has been compiled with CONFIG_VFAT_FS=y.

Any help?

[weaksauce]

Do you also have

[cyrillic]

You can always do this to check what filesystems are supported by your kernel.

[qxtr01]

please run 'dmesg' just after having tried mounting the partition and post the last lines.

[muc-gentoo]

CONFIG_FAT_FS=y is set

cat /proc/filesystems does not retrieve vfat

here is the output of dmesg

[d2_racing]

Hi, do you see at least the drive ?

[muc-gentoo]

yes, I can see it with fdisk -l

[weaksauce]

I hate to be sailing in as capt. obvious here, but are you sure you're booted into the correct kernel? If /proc/filesystems doesn't show vfat that's the only thing that seems to make sense. Has this ever worked or is this a recent development?

[qxtr01]

did you compile the requested options under Native language support?

[muc-gentoo]

Yes, I am positive to have loaded the correct kernel, because

[djinnZ]

verify if you have not the old fat (CONFIG_MSDOS_FS=y) support enabled (it tends to prevent the correct recognition of the filesystems) and are you sure than vfat is not present in the /proc/filesystems file (note than you must have CONFIG_FAT=y also)?
Is not normal, the only thing able to break the fat support is a misconfiguration in the codepages.
Have you build the kernel with genkernel? Try to remove the archived configuration and in every case do a make mrproper and reconfigure it from zero.
Just to be clear: if CONFIG_VFAT_FS=y you must have the codepages selected in CONFIG_FAT_DEFAULT_CODEPAGE and CONFIG_FAT_DEFAULT_IOCHARSET builtin, or modular only if CONFIG_VFAT_FS=m or the kernel modules autoload works properly.
By example I have:

[muc-gentoo]

Thank you very much. That last reply fixed the problem.

[d2_racing]

Nice