On 06/06/2012 06:57 PM, Alex wrote:
Hi,
What's the proper way to copy the entire USB stick as an image?
I suspect the issue is that the bootsector is within the first four
blocks, and the filesystem begins after that. How can I tell "mount"
to look for the filesystem after the first four blocks?
Somehow when I insert the USB stick on my fedora16 desktop, it's
already mounted (by udev?) and I can see the contents, so there is a
valid filesystem on the original USB stick.
Thanks,
Alex
When fedora automounts your usb thumb drive,
which device does it mount?
sdb1 or sdc1?
It mounts both, each in a separate directory in /media.
Also, the file usbstick.dd:
is this the file you created by attempting to dd
which of the 2 devices? sdb or sdc?
This is from sdb1. I haven't tried sdc1, figuring I should try and get
sdb1 (the smaller device and partition) working first.
It seems now, after having mounting and unmounting, inserting and
reinserting, it no longer automounts either partition. I've also tried
restarting udevd.
I've also tried creating the backup using just "cat /dev/sdb1>
usbstick.dd" and it's the same result. I believe I mentioned in my
previous post that there does appear to be a filesystem and partition
table there?
# fdisk -l usbstick.dd
Disk usbstick.dd: 1342 MB, 1342169088 bytes
45 heads, 4 sectors/track, 14563 cylinders, total 2621424 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x261e6d11
Device Boot Start End Blocks Id System
usbstick.dd1 * 4 5242859 2621428 b W95 FAT32
Thanks,
Alex
I might be wrong, but....
the usb stick drive may have firmware that
presents 2 devices to the host. It is similar to
connecting a usb hub to your computer, and then
inserting 2 ordinary usb drives into the hub, which
then appear on the host as sdb and sdc.
I do not know of a linux tool that will let you
dd both of these devices as a single device image.
Perhaps someone on this list might know of such
a util.
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