Hi, I'm trying to copy a USB stick that I purchased that's supposed to contain a bootable desktop with a bunch of applications like firefox, openoffice, etc. The USB stick somehow actually contains two devices. One has a vfat filesystem and the other appears to be NTFS. When mounted, it has some sort of fedora variant in a tarball on it that's actually the bootable desktop. When I try to use dd to copy it, it eventually times out, produces an error like "sdb: unable to read partition table" and makes the device entirely inaccessible. I'm also unable to mount the resulting dd image as a loopback vfat filesystem once my copy has completed. There seems to be a disparity between what fdisk shows is the length of the filesystem and how much space is actually allocated? How did they create two devices within the one device? dmesg contains this info when I insert the USB stick: [1857968.944942] sd 75:0:0:0: [sdb] 7559249 512-byte logical blocks: (3.87 GB/3.60 GiB) [1857968.945310] sd 75:0:0:1: [sdc] 25307055 512-byte logical blocks: (12.9 GB/12.0 GiB) Here's the output from fdisk: # fdisk -l /dev/sdb /dev/sdc Disk /dev/sdb: 3870 MB, 3870335488 bytes 45 heads, 4 sectors/track, 41995 cylinders, total 7559249 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 /dev/sdb1 * 4 5242859 2621428 b W95 FAT32 Disk /dev/sdc: 13.0 GB, 12957212160 bytes 229 heads, 55 sectors/track, 2009 cylinders, total 25307055 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: 0x7d2c8154 Device Boot Start End Blocks Id System /dev/sdc1 9048 24272568 12131760+ 7 HPFS/NTFS/exFAT # file usbstick.dd usbstick.dd: x86 boot sector; partition 1: ID=0xb, active, starthead 1, startsector 4, 5242856 sectors, code offset 0x31 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 -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
