Re: [ts-7000] SD card

[Larry <>]

Ted
  I tried to do what you have here. I'm optomistic it will work.
However, I think I may have something else fundamentally wrong.
I am unable to change the partition table. I use fdisk to make edits then write the new table.
Then I exit.
I go back in to fdisk and print the table and it's exactly as I started. The changes don't get written.
It's very strange!
Any suggestions? I've checked the write protect switch and that's not it.

Larry

Theodore A. Roth wrote:

On Thu, Oct 30, 2008 at 6:06 AM, Larry <net> wrote:
> I picked up some 2 gig SD cards at Microcenter and have been
> unsuccessfully trying to partition and get them to boot and run on the
> TS7390.
>
> Most of these memory media are slightly different size depending on
> make. Also they tend to have different memory geometry.
> So I don't want to do a direct dd copy of the whole device.
>
> I also wanted to partition a larger root area.
>
> So here's what I have - can someone tell me what I've done wrong?
>
>
> Disk /dev/tssdcarda: 2021 MB, 2021654528 bytes
> 20 heads, 19 sectors/track, 10390 cylinders
> Units = cylinders of 380 * 512 = 194560 bytes
>
> Device Boot Start End Blocks Id System
> /dev/tssdcarda1 1 1000 189990+ c W95 FAT32
> (LBA)
> /dev/tssdcarda2 1001 1022 4180 da Non-FS data
> /dev/tssdcarda3 1023 1044 4180 da Non-FS data
> /dev/tssdcarda4 1045 10390 1775740 83 Linux
>

Hi Larry,

I have had the best luck with changing the Heads/Sector/Cylinders for
the card. I have tried to explain this here:

http://ted.openavr.org/Lenny-on-ts7390/

In your case above, I would try setting the geometry to this:

H = 4
S = 16
C = 2021654528 / (4 * 16 * 512) = 61696

After that, you can set up your partitions nearly the same as in the above link.

Hope that helps.

Ted Roth

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