I can't mount exfat in OpenWrt

I build exfat-fsck exfat-mkfs kmod-fs-exfat in my firmware,but i cant mount exfat hard disk.

root@DESKTOP-MDLNYYW:~# mount -t exfat /dev/sda3 /opt/hdd_1
mount: mounting /dev/sda3 on /opt/hdd_1 failed: No such device

root@DESKTOP-MDLNYYW:~# mount /dev/sda3 /opt/hdd_1
NTFS signature is missing.
Failed to mount '/dev/sda3': Invalid argument
The device '/dev/sda3' doesn't seem to have a valid NTFS.
Maybe the wrong device is used? Or the whole disk instead of a
partition (e.g. /dev/sda, not /dev/sda1)? Or the other way around?
mount: mounting /dev/sda3 on /opt/hdd_1 failed: Invalid argument

opkg install exfat.fsck
fsck.exfat /dev/sda3

thank you bro.But I don't think it's the hard drive.I think this is due to OpenWrt's compatibility with the EXFAT file system.

kmod-fs-exfat has been available in OpenWrt for quite a while now - and it is functional.

But how can I use it? mount -t exfat /dev/sda3 /opt/hdd_1 It's no use,The mount points in Luci can't find EXFAT either image

The one in the screenshot is my custom one and it doesn't work either

Do you have kmod-usb-storage installed? You may also need kmod-usb-storage-uas.

I installed the kmod-usb-storage and kmod-usb-storage-uas.

opkg install lsblk
lsblk -f

install the kmod-fs-exfat exfat-mkfs and:

$ mkfs.exfat /dev/sda1
exfatprogs version : 1.1.3
Creating exFAT filesystem(/dev/sda1, cluster size=131072)

Writing volume boot record: done
Writing backup volume boot record: done
Fat table creation: done
Allocation bitmap creation: done
Upcase table creation: done
Writing root directory entry: done

exFAT format complete!
root@OpenWrt:/mnt# mount /dev/sda1 /root/test/u1
root@OpenWrt:/mnt# df -T
Filesystem           Type       1K-blocks      Used Available Use% Mounted on
/dev/root            ext4        60957748  30002260  30939104  49% /
tmpfs                tmpfs         507300       888    506412   0% /tmp
tmpfs                tmpfs            512         0       512   0% /dev
/dev/mmcblk0p1       ext4           16112     12360      3428  78% /mnt/mmcblk0p1
/dev/root            ext4        60957748  30002260  30939104  49% /opt
overlay              overlay     60957748  30002260  30939104  49% /opt/overlay2/18b645874c79f0882a0dc12c320d3c9f791043f8ff9a6507e5b7c520cbfd96b1/merged
/dev/loop0p1         vfat         1049580    711052    338528  68% /mnt/loop0p1
/dev/loop0p2         ext4        27413845  22806510   4603239  83% /mnt/loop0p2
/dev/sda1            exfat      125036544       384 125036160   0% /root/test/u1