If installed with UNETBOOTIN, edit syslinux.cfg:
.......
.......
label unetbootindefault
menu label Default
kernel /ubnkern
append initrd=/ubninit quiet max_loop=255 tinycore waitusb=5
.......
.......
While waitusb=5 is enough in most cases, higher value, 10-12 may be required.
When system is running
cat /etc/sysconfig/tce.mount
will display used tce directory. If it is /tmp/.... stick is not recognized. If yes, it is /mnt/sda1/tce or similar, depending on your hw config.