I have a ts-7800 that boots from an SD card. I made a copy of that
card, using dd for partitions 1 and 2. I made partition 3 an ext3,
and partition 4 a jfs, per the original SD card. Then I used cp -au
<src card> <target card> for partitions 3 and then 4.
The card I made will only work if I remove the jumper that tells the
ts7800 to boot from the card. Without the jumper, the unit boots from
nand and then the SD card. While I can use it that way, I'm trying to
understand what the difference might be, because I must be doing
something wrong.
BTW, I can't use dd on partition 4, because the target card is smaller
than the source card, although both are 2 GB. I've tried on 4
different SD targets. All the cards are SanDisk.
I asked Derek at Technologic why it can boot through nand first and
then the card, but not the card directly. He hasn't answered me so I
hope someone here can offer some clues.
Thanks.
DaveS
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