Mike,
If I've followed previous questions right, the main problem you have is
making you data recording robust against power failure.
Someone suggested writing to USB, with the "sync" option used in the mount.
Then you seem to have gone on a tangent with booting from USB?
If you wind back to your previous setup, all you need to do is ensure the
USB stick is mounted to, say /data, and arrange you program to dump the
data into files under /data . The USB stick can be a standard FAT formatted
one, so there are no complications with ext2 and funny options when
formatting it.
Or have I misunderstood?
On Sun, 30 Oct 2011, Mike Dodd wrote:
> Help! I'm trying to boot a 7350 into Debian Sarge on a USB drive, but get
> a (Redboot, apparently) error message:
>
> VFS: Cannot open root device "hda1" or 03:01
> Please append a correct "root=" boot option
> Kernel panic: VFS: Unable to mount root fs on 03:01
>
> I fdisk'ed and formated my USB drive EXT2, downloaded and untarred
> debian-sarge-usb_default.tar.gz to the USB drive, using a PC running Debian
> Squeeze. An ls -l command to the mounted USB drive on that PC showed the same
> directory tree I see for ARM Sarge for NFS on my Linux server (and which a
> 7250 boots okay).
>
> I configured Redboot fconfig according to the TS ARM Linux manual with:
>
> fis load vmlinux
> exec -c "console=ttyAM0,115200 ip=192.168.1.52 root=/dev/hda1"
>
> The 'Please append a correct "root=" boot option' message seems to indicate
> that Redboot doesn't like /dev/hda1, but it also doesn't like /dev/sda1. My
> USB drive is plugged into the lower USB port.
>
> Does anyone have any idea what I should use to boot to the USB?
>
> Thanks in advance.
>
> --- Mike
>
>
>
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