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Thomas Schmitt

2017-Mar-21 08:41 UTC

[syslinux] "isolinux.bin missing or corrupt" when booting USB flash drive in old PC

Hi,

i have uploaded a little gz compressed tarball

  http://scdbackup.webframe.org/block_seq.tgz

containing

  -rwxr-xr-x thomas/thomas  4552 2017-03-21 09:23 block_seq
  -rw-r--r-- thomas/thomas   315 2017-03-21 09:22 block_seq.c

To be unpacked in a suitable directory by

  tar xvzf block_seq.tgz

The binary "block_seq" was compiled on Debian Jessie.
If it does not run, do

  cc -o block_seq block_seq.c

to get a locally compiled binary.


When Martin posted his MBR binary, the test stick shall be composed by:

  dd if=martins_mbr.bin bs=1 count=432 of=/dev/sdc

  dd if=debian-8.7.1-i386-xfce-CD-1.iso bs=1 count=80 seek=432 of=/dev/sdc

  ./block_seq | dd bs=512 skip=1 count=1325055 seek=1 of=/dev/sdc

You will have to copy the screen output by hand or by photo camera.
The hopefully lengish hex output of the block content can be truncated
to 4 bytes, if all groups of 4 bytes are the same. If you see a change
in the 4 byte pattern in the reported text, then all different groups
of 4 bytes are of interest.


Have a nice day :)

Thomas

David Christensen

2017-Mar-21 21:22 UTC

head link

[syslinux] "isolinux.bin missing or corrupt" when booting USB flash drive in old PC

On 03/21/2017 01:41 AM, Thomas Schmitt via Syslinux
wrote:> Hi,
>
> i have uploaded a little gz compressed tarball
>
>   http://scdbackup.webframe.org/block_seq.tgz
>
> containing
>
>   -rwxr-xr-x thomas/thomas  4552 2017-03-21 09:23 block_seq
>   -rw-r--r-- thomas/thomas   315 2017-03-21 09:22 block_seq.c
>
> To be unpacked in a suitable directory by
>
>   tar xvzf block_seq.tgz
>
> The binary "block_seq" was compiled on Debian Jessie.
> If it does not run, do
>
>   cc -o block_seq block_seq.c
>
> to get a locally compiled binary.
Build your code:

2017-03-21 12:31:07 dpchrist at hd-tracy ~
$ cat /etc/debian_version
8.7

2017-03-21 12:33:27 dpchrist at hd-tracy ~
$ uname -a
Linux hd-tracy 3.16.0-4-686-pae #1 SMP Debian 3.16.39-1+deb8u2 
(2017-03-07) i686 GNU/Linux

2017-03-21 12:33:29 dpchrist at hd-tracy ~
$ cd sandbox/syslinux/thomas-schmitt/block_seq-20170321-0141/

2017-03-21 12:34:01 dpchrist at hd-tracy 
~/sandbox/syslinux/thomas-schmitt/block_seq-20170321-0141
$ cat block_seq.c
/*
  cc -o block_seq block_seq.c
*/

#include <unistd.h>

int main()
{
  int ret;
  unsigned int i, j, k;
  char buf[512];

  for(i= 0; ; i++) {
    for(j= 0; j < 128; j++)
      for(k= 0; k < 4; k++)
        buf[4 * j + k]= (i >> (24 - 8 * k)) & 0xff;
    ret= write(1, buf, 512);
    if(ret != 512)
  break;
  }
  return 0;
}

2017-03-21 12:34:23 dpchrist at hd-tracy 
~/sandbox/syslinux/thomas-schmitt/block_seq-20170321-0141
$ cc -o block_seq block_seq.c

2017-03-21 12:34:53 dpchrist at hd-tracy 
~/sandbox/syslinux/thomas-schmitt/block_seq-20170321-0141
$ ./block_seq | dd count=4 2>/dev/null | hexdump -C
00000000  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00 
|................|
*
00000200  00 00 00 01 00 00 00 01  00 00 00 01 00 00 00 01 
|................|
*
00000400  00 00 00 02 00 00 00 02  00 00 00 02 00 00 00 02 
|................|
*
00000600  00 00 00 03 00 00 00 03  00 00 00 03 00 00 00 03 
|................|
*
00000800

> When Martin posted his MBR binary, the test stick shall be composed by:
>
>   dd if=martins_mbr.bin bs=1 count=432 of=/dev/sdc
>
>   dd if=debian-8.7.1-i386-xfce-CD-1.iso bs=1 count=80 seek=432 of=/dev/sdc
>
>   ./block_seq | dd bs=512 skip=1 count=1325055 seek=1 of=/dev/sdc
>
> You will have to copy the screen output by hand or by photo camera.
> The hopefully lengish hex output of the block content can be truncated
> to 4 bytes, if all groups of 4 bytes are the same. If you see a change
> in the 4 byte pattern in the reported text, then all different groups
> of 4 bytes are of interest.
Build Martin's code:

2017-03-21 12:38:11 dpchrist at hd-tracy ~
$ mkdir src/syslinux

2017-03-21 12:38:16 dpchrist at hd-tracy ~
$ cd src/syslinux/

2017-03-21 12:38:19 dpchrist at hd-tracy ~/src/syslinux
$ apt-get source syslinux

2017-03-21 12:50:05 dpchrist at hd-tracy ~/src/syslinux
$ cp -rp syslinux-6.03+dfsg/ syslinux-6.03+dfsg+dpchrist

2017-03-21 12:51:51 dpchrist at hd-tracy ~/src/syslinux
$ cd syslinux-6.03+dfsg+dpchrist/

2017-03-21 12:59:04 dpchrist at hd-tracy 
~/src/syslinux/syslinux-6.03+dfsg+dpchrist
$ perl -pi -e 's/(^all:.+)\\/$1martins_mbr.bin \\/' mbr/Makefile

2017-03-21 13:09:41 dpchrist at hd-tracy 
~/src/syslinux/syslinux-6.03+dfsg+dpchrist
$ wget http://www.syslinux.org/archives/2017-March/025658.html -O - | 
tail -n 388 | head -n 362 | perl -p -e 's/\&quot;/"/g' | perl
-p -e
's/&lt;/</g' | perl -p -e 's/\&gt;/>/g' >
mbr/martins_mbr.S

2017-03-21 13:18:36 dpchrist at hd-tracy 
~/src/syslinux/syslinux-6.03+dfsg+dpchrist
$ perl -pi -e 's/(isohdp\[fp\]x)/($1|martins_mbr)/' mbr/checksize.pl

2017-03-21 13:33:55 dpchrist at hd-tracy 
~/src/syslinux/syslinux-6.03+dfsg+dpchrist
$ make
...

2017-03-21 13:35:26 dpchrist at hd-tracy 
~/src/syslinux/syslinux-6.03+dfsg+dpchrist
$ ll bios/mbr/martins_mbr.bin
-rw-r--r-- 1 dpchrist dpchrist 432 2017/03/21 13:28:30 
bios/mbr/martins_mbr.bin

2017-03-21 13:44:54 dpchrist at hd-tracy 
~/src/syslinux/syslinux-6.03+dfsg+dpchrist
$ hexdump -C bios/mbr/martins_mbr.bin
00000000  33 ed fa 8e d5 bc 00 7c  fb fc 66 31 db 66 31 c9 
|3......|..f1.f1.|
00000010  66 53 66 51 06 57 8e dd  8e c5 52 be 00 7c bf 00 
|fSfQ.W....R..|..|
00000020  06 b9 00 01 f3 a5 ea 2b  06 00 00 52 b4 41 bb aa 
|.......+...R.A..|
00000030  55 31 c9 30 f6 f9 cd 13  72 1d 81 fb 55 aa 75 17 
|U1.0....r...U.u.|
00000040  83 e1 01 74 12 66 c7 06  0d 07 b4 42 eb 15 56 e8 
|...t.f.....B..V.|
00000050  26 01 45 0d 0a eb 07 56  e8 1d 01 43 0d 0a 5e 5a 
|&.E....V...C..^Z|
00000060  51 b4 08 cd 13 83 e1 3f  5b 51 0f b6 c6 40 50 f7 
|Q......?[Q... at P.|
00000070  e1 53 52 50 bb 00 7c b9  04 00 66 a1 b0 07 e8 71 
|.SRP..|...f....q|
00000080  00 0f 82 ad 00 66 40 80  c7 02 e2 f2 60 bf 00 7c 
|.....f at .....`..||
00000090  ba 10 00 b9 10 00 8a 05  47 e8 c6 00 e2 f8 e8 d7 
|........G.......|
000000a0  00 0d 0a 4a 75 ed e8 cf  00 4b 65 79 3f 0d 0a 31 
|...Ju....Key?..1|
000000b0  c0 cd 16 61 66 81 3e 40  7c fb c0 78 70 75 09 fa 
|...af.>@|..xpu..|
000000c0  bc ec 7b ea 44 7c 00 00  e8 ad 00 69 73 6f 6c 69 
|..{.D|.....isoli|
000000d0  6e 75 78 2e 62 69 6e 20  6d 69 73 73 69 6e 67 20  |nux.bin 
missing |
000000e0  6f 72 20 63 6f 72 72 75  70 74 2e 0d 0a cd 18 f4  |or 
corrupt......|
000000f0  eb fd 66 60 66 31 d2 66  03 06 f8 7b 66 13 16 fc 
|..f`f1.f...{f...|
00000100  7b 66 52 66 50 06 53 6a  01 6a 10 89 e6 66 f7 36 
|{fRfP.Sj.j...f.6|
00000110  e8 7b c0 e4 06 88 e1 88  c5 92 f6 36 ee 7b 88 c6 
|.{.........6.{..|
00000120  08 e1 41 b8 01 02 8a 16  f2 7b cd 13 8d 64 10 66 
|..A......{...d.f|
00000130  61 c3 e8 43 00 4f 70 65  72 61 74 69 6e 67 20 73 
|a..C.Operating s|
00000140  79 73 74 65 6d 20 6c 6f  61 64 20 65 72 72 6f 72  |ystem load 
error|
00000150  2e 0d 0a eb 98 53 b4 0e  8a 3e 62 04 b3 07 cd 10 
|.....S...>b.....|
00000160  5b c3 50 c0 e8 04 e8 01  00 58 24 0f 3c 09 76 02 
|[.P......X$.<.v.|
00000170  04 07 04 30 e8 de ff c3  5e 55 50 53 ac e8 d5 ff 
|...0....^UPS....|
00000180  3c 0a 75 f8 5b 58 5d 56  c3 00 00 00 00 00 00 00 
|<.u.[X]V........|
00000190  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00 
|................|
*
000001b0


Build the USB stick:

2017-03-21 13:44:13 root at hd-tracy ~
# 
/home/dpchrist/sandbox/syslinux/thomas-schmitt/block_seq-20170321-0141/block_seq
| dd iflag=fullblock bs=1M count=647 of=/dev/sdb
647+0 records in
647+0 records out
678428672 bytes (678 MB) copied, 133.741 s, 5.1 MB/s

2017-03-21 13:47:30 root at hd-tracy ~
# dd if=/dev/sdb count=4 2>/dev/null | hexdump -C
00000000  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00 
|................|
*
00000200  00 00 00 01 00 00 00 01  00 00 00 01 00 00 00 01 
|................|
*
00000400  00 00 00 02 00 00 00 02  00 00 00 02 00 00 00 02 
|................|
*
00000600  00 00 00 03 00 00 00 03  00 00 00 03 00 00 00 03 
|................|
*
00000800

2017-03-21 13:47:41 root at hd-tracy ~
# dd 
if=/home/dpchrist/src/syslinux/syslinux-6.03+dfsg+dpchrist/bios/mbr/martins_mbr.bin
of=/dev/sdb
0+1 records in
0+1 records out
432 bytes (432 B) copied, 0.00657437 s, 65.7 kB/s

2017-03-21 14:07:23 root at hd-tracy ~
# dd 
if=/mnt/samba/data/dpchrist/iso/debian/8.7.1/i386/debian-8.7.1-i386-xfce-CD-1.iso
bs=1 count=80 skip=432 of=/dev/sdb seek=432
80+0 records in
80+0 records out
80 bytes (80 B) copied, 0.0361075 s, 2.2 kB/s

2017-03-21 14:09:04 root at hd-tracy ~
# dd if=/dev/sdb count=1 2>/dev/null | hexdump -C
00000000  33 ed fa 8e d5 bc 00 7c  fb fc 66 31 db 66 31 c9 
|3......|..f1.f1.|
00000010  66 53 66 51 06 57 8e dd  8e c5 52 be 00 7c bf 00 
|fSfQ.W....R..|..|
00000020  06 b9 00 01 f3 a5 ea 2b  06 00 00 52 b4 41 bb aa 
|.......+...R.A..|
00000030  55 31 c9 30 f6 f9 cd 13  72 1d 81 fb 55 aa 75 17 
|U1.0....r...U.u.|
00000040  83 e1 01 74 12 66 c7 06  0d 07 b4 42 eb 15 56 e8 
|...t.f.....B..V.|
00000050  26 01 45 0d 0a eb 07 56  e8 1d 01 43 0d 0a 5e 5a 
|&.E....V...C..^Z|
00000060  51 b4 08 cd 13 83 e1 3f  5b 51 0f b6 c6 40 50 f7 
|Q......?[Q... at P.|
00000070  e1 53 52 50 bb 00 7c b9  04 00 66 a1 b0 07 e8 71 
|.SRP..|...f....q|
00000080  00 0f 82 ad 00 66 40 80  c7 02 e2 f2 60 bf 00 7c 
|.....f at .....`..||
00000090  ba 10 00 b9 10 00 8a 05  47 e8 c6 00 e2 f8 e8 d7 
|........G.......|
000000a0  00 0d 0a 4a 75 ed e8 cf  00 4b 65 79 3f 0d 0a 31 
|...Ju....Key?..1|
000000b0  c0 cd 16 61 66 81 3e 40  7c fb c0 78 70 75 09 fa 
|...af.>@|..xpu..|
000000c0  bc ec 7b ea 44 7c 00 00  e8 ad 00 69 73 6f 6c 69 
|..{.D|.....isoli|
000000d0  6e 75 78 2e 62 69 6e 20  6d 69 73 73 69 6e 67 20  |nux.bin 
missing |
000000e0  6f 72 20 63 6f 72 72 75  70 74 2e 0d 0a cd 18 f4  |or 
corrupt......|
000000f0  eb fd 66 60 66 31 d2 66  03 06 f8 7b 66 13 16 fc 
|..f`f1.f...{f...|
00000100  7b 66 52 66 50 06 53 6a  01 6a 10 89 e6 66 f7 36 
|{fRfP.Sj.j...f.6|
00000110  e8 7b c0 e4 06 88 e1 88  c5 92 f6 36 ee 7b 88 c6 
|.{.........6.{..|
00000120  08 e1 41 b8 01 02 8a 16  f2 7b cd 13 8d 64 10 66 
|..A......{...d.f|
00000130  61 c3 e8 43 00 4f 70 65  72 61 74 69 6e 67 20 73 
|a..C.Operating s|
00000140  79 73 74 65 6d 20 6c 6f  61 64 20 65 72 72 6f 72  |ystem load 
error|
00000150  2e 0d 0a eb 98 53 b4 0e  8a 3e 62 04 b3 07 cd 10 
|.....S...>b.....|
00000160  5b c3 50 c0 e8 04 e8 01  00 58 24 0f 3c 09 76 02 
|[.P......X$.<.v.|
00000170  04 07 04 30 e8 de ff c3  5e 55 50 53 ac e8 d5 ff 
|...0....^UPS....|
00000180  3c 0a 75 f8 5b 58 5d 56  c3 00 00 00 00 00 00 00 
|<.u.[X]V........|
00000190  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00 
|................|
*
000001b0  fc 20 00 00 00 00 00 00  72 40 f5 59 00 00 80 00  |. 
......r at .Y....|
000001c0  01 00 00 3f a0 86 00 00  00 00 00 38 14 00 00 fe 
|...?.......8....|
000001d0  ff ff ef fe ff ff 4c 21  00 00 60 02 00 00 00 00 
|......L!..`.....|
000001e0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00 
|................|
000001f0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 55 aa 
|..............U.|
00000200

2017-03-21 14:09:10 root at hd-tracy ~
# fdisk -l /dev/sdb

Disk /dev/sdb: 3.6 GiB, 3887595520 bytes, 7592960 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
Disklabel type: dos
Disk identifier: 0x59f54072

Device     Boot Start     End Sectors  Size Id Type
/dev/sdb1  *        0 1325055 1325056  647M  0 Empty
/dev/sdb2        8524    9131     608  304K ef EFI (FAT-12/16/32)


Boot the USB flash drive in computer with Intel D865GBFLK motherboard 
and Intel Pentium 4 3.4E GHz processor:

C
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
Key?


If I press the 'a' key, I see:

isolinux.bin missing or corrupt

Reboot and Select proper Boot device
or Insert Boot Media in selected Boot device


David

Thomas Schmitt

2017-Mar-21 22:10 UTC

head link

[syslinux] "isolinux.bin missing or corrupt" when booting USB flash drive in old PC

Hi,

David Christensen had Martin's MBR write:> C
That means the LBA 8444 has to be converted to a Cylinder/Head/Sector
address.
It would be interesting to learn by which heads/cylinder and sectors/head
factors.

> 00000000000000000000000000000000
> ...
> 00000000000000000000000000000000
Well, this is none of the block contents which was written to the stick.
Neither the MBR parts nor the data dummy.

Do you get the same result if you fill the entire stick with block_seq
by omitting dd option count=647 ?

  /home/dpchrist/sandbox/syslinux/thomas-schmitt/block_seq-20170321-0141/block
_seq | dd iflag=fullblock bs=1M of=/dev/sdb

which will end intentionally by i/o error.
And then again

  dd
if=/home/dpchrist/src/syslinux/syslinux-6.03+dfsg+dpchrist/bios/mbr/martins_mbr.bin
of=/dev/sdb
  dd
if=/mnt/samba/data/dpchrist/iso/debian/8.7.1/i386/debian-8.7.1-i386-xfce-CD-1.iso
bs=1 count=80 skip=432 of=/dev/sdb seek=432

> Key?
> If I press the 'a' key, I see:
Now i understand what "Key?" shall mean. INT 16 AH 0 fetches a
keypress.
Is "xor %ax, %ax" a typical way to say "ax = 0;" ?

> isolinux.bin missing or corrupt
This was expected. But the zeros which cause the message were not expected.


Have a nice day :)

Thomas

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