What error messages are you getting?
Who are you trying to mount the drive as?
Does the mount point /ls120 exist?
In short, we need more detail.
I have the knoppix 4.0 on DVD and my computer is amd 1ghz with 512 mo ram, 2 hd, 1 cdrom, 1 dvd/cd writer, 1 floppy and 1 internal ls120. When I run knoppix 4.0 dvd live, when it has finished loaded and installed, in a console I mount my ls120 with the command:
mount -t vfat /dev/hdg /mnt/ls120
and I have no problem reading a floppy or a 120mg disk. But when I install on my hard drive knoppix 4.0 I'm not able to mount the ls120. Is there anything I have to download or does the command "mount -t vfat /dev/hdg /mnt/ls120" changed for something else. I looked in the dmesg message and my ls120 appears as hdg.
Thank you
What error messages are you getting?
Who are you trying to mount the drive as?
Does the mount point /ls120 exist?
In short, we need more detail.

128GB (4x32GB) SK hynix DDR4 PC4-2666V RDIMM ECC Server Ram HMA84GR7CJR4N-VK
$799.00
Microsoft Office 2021 Pro Plus USB for 1PC Windows 10 & 11
$62.50
lOT OF 4 SKhynix 8GB (4 x 8GB =32GB) HMA41GR7MFR8N-TF 2R8 PC4-2133P DDR4 MEMORY
$89.00
TF/SD Card Adapter Camera Reader Android Type-c For iPhone17 Pro Max Plusm lot
$573.98
Kingston 32GB 64GB 128GB 256GB USB 3.0 Flash Drive Thumb Memory Stick Pen lot
$285.90
USB 3.0 Flash Drive 32GB 64GB 128GB Memory Stick Thumb Stick Lot Pack
$826.09
USB 3.0 Micro SD SDHC TF Card Reader Memory Adapter for PC Laptop Camera lot
$3.75
SK Hynix HMAA8GR7CJR4N-XN 64GB 2RX4 PC4-3200AA DDR4 Server RAM
$600.00
Dell Precision 3541 Laptop i5-9300H 2.4GHz 256GB SSD 16GB RAM Win 11 Pro
$189.99
Microsoft Windows 11 Home 64-Bit USB Flash Drive + Key Retail Box - Original
$39.88