Difference between u-boot_nand - u-boot_sd?

Hi all.

I have a Mini6410 and in the DVD comes 2 files of UBoot, so my question is:

What is the difference between u-boot_nand.bin and u-boot_sd.bin?

Thanks.

u-boot_sd.bin is the bootloader for sd card ..so u can boot u-boot from sd
card (but for this first superboot and then u-boot_sd.bin is to be flshed
to sd card using sd-flasher.exe).
u-boot_nand.bin is the bootloader for nand..so using this u-boot from nand
can be booted (using u-boot from sd card u-boot_nand.bin can be flashed to
nand directly using dnw.exe)..please refer user manual also for details

Hi, thanks for reply.

To boot from SD I flash Superboot into the SD, then I can boot from it and
flash Uboot_nand in to the NAND, then upload the kernel image to NAND, run
the kernel and load the filesystem(Debian) from SD,no problem to here.

The problem it's if I flash uboot_sd into the SD becouse nothing happen
when I try to boot from SD, to do this I used SD-Flasher.exe.

I want to boot from SD and run the system(Debian) that I have configure in
to the SD.

I need to flash Superboot and Uboot_sd into the SD?

Thanks :)

superboot first checks u-boot in sd card and if not found it boots u-boot
from nand. that is why u could update images in nand using the u-boot from
nand.
In case u want u-boot to boot from sd card flash superboot and u-boot_sd to
sd card using sd-flasher.exe. Copy the image folder containing kernel image
and using script FriendlyARM.ini configure it to boot kernel from sd card.
now change the S2 switch to 'SDBOOT' and power on the board. it boots
u-boot from sd card.
Then u can follow the procedure of booting kernel from sd card

Thanks again for answer.

I flashed superboot and ubood_sd into the SD but when I boot from NOR I got
a message error

-------------------------------------------------------------------------

U-Boot 1.1.6 (Sep 17 2010 - 11:53:40) for FriendlyARM MINI6410



CP
U:     S3C6410@532MHz

         Fclk = 532MHz, Hclk = 133MHz, Pclk = 66MHz, Serial = CLKUART (SYNC
Mode) 

Board:   MINI6410

DRAM:    128 MB

Flash:   0 kB

NAND:    1024 MB 

MMC:     
error found: 0001

-------------------------------------------------------------------------

are u using mmc card for booting u-boot. bacause i also tried mmc card and
it doesnot seem to work. please try the same procedure with SD card. only
SD card seem to work..

I haven't a SD card only MicroSD of 8GB Class 10.

I was read in some sites that Uboot suport boot from mmc but the version
for Mini6410 doesn'n work.