Failure to dd diskboot.img to pen drive
Rick Stevens
rstevens at internap.com
Thu Nov 15 21:04:27 UTC 2007
On Thu, 2007-11-15 at 18:08 -0200, Clodoaldo wrote:
> I want to install F8 from a 1GB pen drive but dd does not work,
> although I can mount it. dd shows it worked:
>
> # dd if=/home/cpn/Desktop/Downloads/diskboot.img of=/dev/sdb1
> 24576+0 records in
> 24576+0 records out
> 12582912 bytes (13 MB) copied, 0.307408 s, 40.9 MB/s
>
> But there is nothing in the directory:
>
> [root at dkt ~]# ll /media/KINGSTON/
> total 0
>
> fdisk -l shows strange messages:
>
> # fdisk -l
>
> Disk /dev/sda: 81.9 GB, 81964302336 bytes
> 16 heads, 63 sectors/track, 158816 cylinders
> Units = cylinders of 1008 * 512 = 516096 bytes
>
> Device Boot Start End Blocks Id System
> /dev/sda1 * 1 203 102280+ 83 Linux
> /dev/sda2 204 158816 79940952 8e Linux LVM
>
> Disk /dev/sdb: 1027 MB, 1027604480 bytes
> 32 heads, 62 sectors/track, 1011 cylinders
> Units = cylinders of 1984 * 512 = 1015808 bytes
>
> This doesn't look like a partition table
> Probably you selected the wrong device.
>
> Device Boot Start End Blocks Id System
> /dev/sdb1 ? 966294 1813487 840415161 69 Unknown
> Partition 1 has different physical/logical beginnings (non-Linux?):
> phys=(612, 109, 33) logical=(966293, 30, 10)
> Partition 1 has different physical/logical endings:
> phys=(255, 97, 46) logical=(1813486, 20, 39)
> Partition 1 does not end on cylinder boundary.
> /dev/sdb2 ? 976282 1834012 850868148+ ff BBT
> Partition 2 has different physical/logical beginnings (non-Linux?):
> phys=(367, 115, 35) logical=(976281, 15, 17)
> Partition 2 has different physical/logical endings:
> phys=(80, 13, 10) logical=(1834011, 14, 55)
> Partition 2 does not end on cylinder boundary.
> /dev/sdb3 ? 891259 1782449 884061367 6c Unknown
> Partition 3 has different physical/logical beginnings (non-Linux?):
> phys=(355, 116, 37) logical=(891258, 2, 52)
> Partition 3 has different physical/logical endings:
> phys=(112, 97, 32) logical=(1782448, 31, 27)
> Partition 3 does not end on cylinder boundary.
> /dev/sdb4 ? 1 1790834 1776506368 0 Empty
> Partition 4 has different physical/logical beginnings (non-Linux?):
> phys=(10, 114, 13) logical=(0, 0, 1)
> Partition 4 has different physical/logical endings:
> phys=(0, 0, 0) logical=(1790833, 1, 2)
> Partition 4 does not end on cylinder boundary.
>
> Partition table entries are not in disk order
>
>
> When I try to enter fdisk the device can't be opened:
>
> # fdisk sdb
>
> Unable to open sdb
>
> # ll /dev/sdb1
> -rw-r--r-- 1 root root 12582912 2007-11-15 17:56 /dev/sdb1
>
> Any workaround?
Redo the dd, but do NOT specify a partition, e.g.:
dd if=/home/cpn/Desktop/Downloads/diskboot.img of=/dev/sdb
For it to be bootable, the image must be written to the raw device
(/dev/sdb), not to a partition on the drive (/dev/sdb1).
----------------------------------------------------------------------
- Rick Stevens, Principal Engineer rstevens at internap.com -
- CDN Systems, Internap, Inc. http://www.internap.com -
- -
- If this is the first day of the rest of my life... -
- I'm in BIG trouble! -
----------------------------------------------------------------------
More information about the fedora-list
mailing list