Re: USB with SDHC card not recognized in 2.6.39 and 3.0rc4

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I used mkdosfs on the card in the following order, thus creating the attached 
output files.
I don't know if that is what you wanted, but I hope it could enlighten the case.

1. While running 3.0rc4 I used mkdosfs on the card and then the commands you 
asked for previously, creating: "using_mkdosfs_30rc4.txt"
2. Booting up on 2.6.38 I did the same, creating: "using_mkdosfs_2.6.38.txt"
3. Booted again on 3.0rc4 just running the commands, creating: 
"debug_usb_3.0rc4_after_mkdosfs.txt"
4. To see if it makes a difference I took the card to another host in the house, 
running Ubuntu 11.04, formatting the card there and then returning it to my 
present host, creating: "debug_usb_3.0rc4_after_ubuntu_mkdosfs.txt"

Should I make another 3.0rc4 kernel with some specific config options set? 
Would it be helpful to see all my config options in my 3.0rc4 kernel? It is a 
90KB file, so I won't just attach it unless needed.

Peter




________________________________
From: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
To: Peter Rasmussen <peterleifrasmussen@xxxxxxxxx>
Cc: Matthew Dharm <mdharm-usb@xxxxxxxxxxxxxxxxxx>; linux-usb@xxxxxxxxxxxxxxx
Sent: Tue, June 28, 2011 8:41:34 PM
Subject: Re: USB with SDHC card not recognized in 2.6.39 and 3.0rc4

On Tue, 28 Jun 2011, Peter Rasmussen wrote:

> I ran the commands that you suggested and attached files of the output.
> 
> In case the environment on my system has known issues I did a few things to 
>show 
>
> what I am running, and attached it.
> 
> When looking at the differences between the output from your commands of 2.6.38 
>
>
> and 3.0rc4 I didn't see anything that looked alarming.

No, there are no differences.  This means the data is getting through
correctly, but the kernel's interpretation of that data has changed.

> Would you want to have the commands run while I am also running usbmon, to see 


> what that gives?

No.

> Would it be helpful to run the SDHC flashcard with adapters that seem to have 
> problems on both 2.6.38 and 3.0rc4?

That's a separate problem.  Let's solve this one first.

> Should I format the SDHC card to another FS than FAT32, to flesh out possible 
> issues?

Can you try reformatting the card's first partition using mkdosfs?  
That alone might solve this problem.

Alan Stern
root@kultorvet:/home/plr# mkdosfs /dev/sda1
mkdosfs 2.11 (12 Mar 2005)
root@kultorvet:/home/plr# mount /dev/sda1 /mnt/usb
mount: wrong fs type, bad option, bad superblock on /dev/sda1,
       missing codepage or helper program, or other error
       In some cases useful info is found in syslog - try
       dmesg | tail  or so

root@kultorvet:/home/plr# dd if=/dev/sda count=1 | hexdump -C
00000000  fa 31 c0 8e d8 8e d0 bc  00 7c 89 e6 06 57 8e c0  |ú1À.Ø.м.|.æ.W.À|
1+0 records in
1+0 records out
00000010  fb fc bf 00 06 b9 00 01  f3 a5 ea 1f 06 00 00 52  |ûü¿..¹..ó¥ê....R|
00000020  52 b4 41 bb aa 55 31 c9  30 f6 f9 cd 13 72 13 81  |R´A»ªU1É0öùÍ.r..|
00000030  fb 55 aa 75 0d d1 e9 73  09 66 c7 06 8d 06 b4 42  |ûUªu.Ñés.fÇ...´B|
00000040  eb 15 5a b4 08 cd 13 83  e1 3f 51 0f b6 c6 40 f7  |ë.Z´.Í..á?Q.¶Æ@÷|
00000050  e1 52 50 66 31 c0 66 99  e8 66 00 e8 21 01 4d 69  |áRPf1Àf.èf.è!.Mi|
00000060  73 73 69 6e 67 20 6f 70  65 72 61 74 69 6e 67 20  |ssing operating |
00000070  73 79 73 74 65 6d 2e 0d  0a 66 60 66 31 d2 bb 00  |system...f`f1Ò».|
00000080  7c 66 52 66 50 06 53 6a  01 6a 10 89 e6 66 f7 36  ||fRfP.Sj.j..æf÷6|
00000090  f4 7b c0 e4 06 88 e1 88  c5 92 f6 36 f8 7b 88 c6  |ô{Àä..á.Å.ö6ø{.Æ|
000000a0  08 e1 41 b8 01 02 8a 16  fa 7b cd 13 8d 64 10 66  |.áA¸....ú{Í..d.f|
000000b0  61 c3 e8 c4 ff be be 7d  bf be 07 b9 20 00 f3 a5  |aÃèÄÿ¾¾}¿¾.¹ .ó¥|
000000c0  c3 66 60 89 e5 bb be 07  b9 04 00 31 c0 53 51 f6  |Ãf`.廾.¹..1ÀSQö|
000000d0  07 80 74 03 40 89 de 83  c3 10 e2 f3 48 74 5b 79  |..t.@.Þ.Ã.âóHt[y|
000000e0  39 59 5b 8a 47 04 3c 0f  74 06 24 7f 3c 05 75 22  |9Y[.G.<.t.$.<.u"|
000000f0  66 8b 47 08 66 8b 56 14  66 01 d0 66 21 d2 75 03  |f.G.f.V.f.Ðf!Òu.|
00000100  66 89 c2 e8 ac ff 72 03  e8 b6 ff 66 8b 46 1c e8  |f.Âè¬ÿr.è¶ÿf.F.è|
00000110  a0 ff 83 c3 10 e2 cc 66  61 c3 e8 62 00 4d 75 6c  | ÿ.Ã.âÌfaÃèb.Mul|
00000120  74 69 70 6c 65 20 61 63  74 69 76 65 20 70 61 72  |tiple active par|
00000130  74 69 74 69 6f 6e 73 2e  0d 0a 66 8b 44 08 66 03  |titions...f.D.f.|
00000140  46 1c 66 89 44 08 e8 30  ff 72 13 81 3e fe 7d 55  |F.f.D.è0ÿr..>þ}U|
00000150  aa 0f 85 06 ff bc fa 7b  5a 5f 07 fa ff e4 e8 1e  |ª...ÿ¼ú{Z_.úÿäè.|
00000160  00 4f 70 65 72 61 74 69  6e 67 20 73 79 73 74 65  |.Operating syste|
00000170  6d 20 6c 6f 61 64 20 65  72 72 6f 72 2e 0d 0a 5e  |m load error...^|
00000180  ac b4 0e 8a 3e 62 04 b3  07 cd 10 3c 0a 75 f1 cd  |¬´..>b.³.Í.<.uñÍ|
00000190  18 f4 eb fd 00 00 00 00  00 00 00 00 00 00 00 00  |.ôëý............|
000001a0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
000001b0  00 00 00 00 00 00 00 00  06 a0 05 00 00 00 80 01  |......... ......|
000001c0  01 00 0c f5 fe fb 3e 00  00 00 72 61 ed 00 00 00  |...õþû>...raí...|
000001d0  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  |..............Uª|
00000200
512 bytes (512 B) copied, 0.00161891 s, 316 kB/s
root@kultorvet:/home/plr# fdisk -l /dev/sda

Disk /dev/sda: 7969 MB, 7969177600 bytes
246 heads, 62 sectors/track, 1020 cylinders
Units = cylinders of 15252 * 512 = 7809024 bytes
Disk identifier: 0x0005a006

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1        1020     7778489    c  W95 FAT32 (LBA)
root@kultorvet:/home/plr# dd if=/dev/sda1 count=1 | hexdump -C
1+0 records in
1+0 records out
00000000  eb 58 90 6d 6b 64 6f 73  66 73 00 00 02 08 20 00  |ëX.mkdosfs.... .|
512 bytes (512 B) copied00000010  02 00 00 00 00 f8 00 00  3e 00 f6 00 00 00 00 00  |.....ø..>.ö.....|
00000020  72 61 ed 00 3b 3b 00 00  00 00 00 00 02 00 00 00  |raí.;;..........|
, 0.00177487 s, 288 kB/s
00000030  01 00 06 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000040  00 00 29 51 48 0a 4e 20  20 20 20 20 20 20 20 20  |..)QH.N         |
00000050  20 20 46 41 54 33 32 20  20 20 0e 1f be 77 7c ac  |  FAT32   ..¾w|¬|
00000060  22 c0 74 0b 56 b4 0e bb  07 00 cd 10 5e eb f0 32  |"Àt.V´.»..Í.^ëð2|
00000070  e4 cd 16 cd 19 eb fe 54  68 69 73 20 69 73 20 6e  |äÍ.Í.ëþThis is n|
00000080  6f 74 20 61 20 62 6f 6f  74 61 62 6c 65 20 64 69  |ot a bootable di|
00000090  73 6b 2e 20 20 50 6c 65  61 73 65 20 69 6e 73 65  |sk.  Please inse|
000000a0  72 74 20 61 20 62 6f 6f  74 61 62 6c 65 20 66 6c  |rt a bootable fl|
000000b0  6f 70 70 79 20 61 6e 64  0d 0a 70 72 65 73 73 20  |oppy and..press |
000000c0  61 6e 79 20 6b 65 79 20  74 6f 20 74 72 79 20 61  |any key to try a|
000000d0  67 61 69 6e 20 2e 2e 2e  20 0d 0a 00 00 00 00 00  |gain ... .......|
000000e0  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  |..............Uª|
00000200
root@kultorvet:/home/plr# file -s /dev/sda1
/dev/sda1: x86 boot sector, mkdosfs boot message display, code offset 0x58, OEM-ID " mkdosfs", sectors/cluster 8, Media descriptor 0xf8, hea
ds 246, sectors 15556978 (volumes > 32 MB) , FAT (32 bit), sectors/FAT 15163, serial number 0x4e0a4851, label: "           "
root@kultorvet:/home/plr# 
root@kultorvet:/home/plr# mkdosfs /dev/sda1
mkdosfs 2.11 (12 Mar 2005)
root@kultorvet:/home/plr# mount -v /dev/sda1 /mnt/usb
mount: you didn't specify a filesystem type for /dev/sda1
       I will try type vfat
/dev/sda1 on /mnt/usb type vfat (rw)
root@kultorvet:/home/plr# df /dev/sda1
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/sda1              7763308         4   7763304   1% /mnt/usb
root@kultorvet:/home/plr# dd if=/dev/sda count=1 | hexdump -C
1+0 records in
1+0 records out
512 bytes (512 B) copied, 0.00145296 s, 352 kB/s
00000000  fa 31 c0 8e d8 8e d0 bc  00 7c 89 e6 06 57 8e c0  |ú1À.Ø.м.|.æ.W.À|
00000010  fb fc bf 00 06 b9 00 01  f3 a5 ea 1f 06 00 00 52  |ûü¿..¹..ó¥ê....R|
00000020  52 b4 41 bb aa 55 31 c9  30 f6 f9 cd 13 72 13 81  |R´A»ªU1É0öùÍ.r..|
00000030  fb 55 aa 75 0d d1 e9 73  09 66 c7 06 8d 06 b4 42  |ûUªu.Ñés.fÇ...´B|
00000040  eb 15 5a b4 08 cd 13 83  e1 3f 51 0f b6 c6 40 f7  |ë.Z´.Í..á?Q.¶Æ@÷|
00000050  e1 52 50 66 31 c0 66 99  e8 66 00 e8 21 01 4d 69  |áRPf1Àf.èf.è!.Mi|
00000060  73 73 69 6e 67 20 6f 70  65 72 61 74 69 6e 67 20  |ssing operating |
00000070  73 79 73 74 65 6d 2e 0d  0a 66 60 66 31 d2 bb 00  |system...f`f1Ò».|
00000080  7c 66 52 66 50 06 53 6a  01 6a 10 89 e6 66 f7 36  ||fRfP.Sj.j..æf÷6|
00000090  f4 7b c0 e4 06 88 e1 88  c5 92 f6 36 f8 7b 88 c6  |ô{Àä..á.Å.ö6ø{.Æ|
000000a0  08 e1 41 b8 01 02 8a 16  fa 7b cd 13 8d 64 10 66  |.áA¸....ú{Í..d.f|
000000b0  61 c3 e8 c4 ff be be 7d  bf be 07 b9 20 00 f3 a5  |aÃèÄÿ¾¾}¿¾.¹ .ó¥|
000000c0  c3 66 60 89 e5 bb be 07  b9 04 00 31 c0 53 51 f6  |Ãf`.廾.¹..1ÀSQö|
000000d0  07 80 74 03 40 89 de 83  c3 10 e2 f3 48 74 5b 79  |..t.@.Þ.Ã.âóHt[y|
000000e0  39 59 5b 8a 47 04 3c 0f  74 06 24 7f 3c 05 75 22  |9Y[.G.<.t.$.<.u"|
000000f0  66 8b 47 08 66 8b 56 14  66 01 d0 66 21 d2 75 03  |f.G.f.V.f.Ðf!Òu.|
00000100  66 89 c2 e8 ac ff 72 03  e8 b6 ff 66 8b 46 1c e8  |f.Âè¬ÿr.è¶ÿf.F.è|
00000110  a0 ff 83 c3 10 e2 cc 66  61 c3 e8 62 00 4d 75 6c  | ÿ.Ã.âÌfaÃèb.Mul|
00000120  74 69 70 6c 65 20 61 63  74 69 76 65 20 70 61 72  |tiple active par|
00000130  74 69 74 69 6f 6e 73 2e  0d 0a 66 8b 44 08 66 03  |titions...f.D.f.|
00000140  46 1c 66 89 44 08 e8 30  ff 72 13 81 3e fe 7d 55  |F.f.D.è0ÿr..>þ}U|
00000150  aa 0f 85 06 ff bc fa 7b  5a 5f 07 fa ff e4 e8 1e  |ª...ÿ¼ú{Z_.úÿäè.|
00000160  00 4f 70 65 72 61 74 69  6e 67 20 73 79 73 74 65  |.Operating syste|
00000170  6d 20 6c 6f 61 64 20 65  72 72 6f 72 2e 0d 0a 5e  |m load error...^|
00000180  ac b4 0e 8a 3e 62 04 b3  07 cd 10 3c 0a 75 f1 cd  |¬´..>b.³.Í.<.uñÍ|
00000190  18 f4 eb fd 00 00 00 00  00 00 00 00 00 00 00 00  |.ôëý............|
000001a0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
000001b0  00 00 00 00 00 00 00 00  06 a0 05 00 00 00 80 01  |......... ......|
000001c0  01 00 0c f5 fe fb 3e 00  00 00 72 61 ed 00 00 00  |...õþû>...raí...|
000001d0  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  |..............Uª|
00000200
root@kultorvet:/home/plr# fdisk -l /dev/sda

Disk /dev/sda: 7969 MB, 7969177600 bytes
246 heads, 62 sectors/track, 1020 cylinders
Units = cylinders of 15252 * 512 = 7809024 bytes
Disk identifier: 0x0005a006

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1        1020     7778489    c  W95 FAT32 (LBA)
root@kultorvet:/home/plr# dd if=/dev/sda1 count=1 | hexdump -C
1+0 records in
1+0 records out
00000000  eb 58 90 6d 6b 64 6f 73  66 73 00 00 02 08 20 00  |ëX.mkdosfs.... .|
512 bytes (512 B) copied00000010  02 00 00 00 00 f8 00 00  3e 00 f6 00 00 00 00 00  |.....ø..>.ö.....|
00000020  72 61 ed 00 3b 3b 00 00  00 00 00 00 02 00 00 00  |raí.;;..........|
, 0.00158269 s, 323 kB/s
00000030  01 00 06 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000040  00 00 29 96 4b 0a 4e 20  20 20 20 20 20 20 20 20  |..).K.N         |
00000050  20 20 46 41 54 33 32 20  20 20 0e 1f be 77 7c ac  |  FAT32   ..¾w|¬|
00000060  22 c0 74 0b 56 b4 0e bb  07 00 cd 10 5e eb f0 32  |"Àt.V´.»..Í.^ëð2|
00000070  e4 cd 16 cd 19 eb fe 54  68 69 73 20 69 73 20 6e  |äÍ.Í.ëþThis is n|
00000080  6f 74 20 61 20 62 6f 6f  74 61 62 6c 65 20 64 69  |ot a bootable di|
00000090  73 6b 2e 20 20 50 6c 65  61 73 65 20 69 6e 73 65  |sk.  Please inse|
000000a0  72 74 20 61 20 62 6f 6f  74 61 62 6c 65 20 66 6c  |rt a bootable fl|
000000b0  6f 70 70 79 20 61 6e 64  0d 0a 70 72 65 73 73 20  |oppy and..press |
000000c0  61 6e 79 20 6b 65 79 20  74 6f 20 74 72 79 20 61  |any key to try a|
000000d0  67 61 69 6e 20 2e 2e 2e  20 0d 0a 00 00 00 00 00  |gain ... .......|
000000e0  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  |..............Uª|
00000200
root@kultorvet:/home/plr# file -s /dev/sda1
/dev/sda1: x86 boot sector, mkdosfs boot message display, code offset 0x58, OEM-ID " mkdosfs", sectors/cluster 8, Media descriptor 0xf8, heads 246, sectors 15556978 (volumes > 32 MB) , FAT (32 bit), sectors/FAT 15163, serial number 0x4e0a4b96, label: "           "
root@kultorvet:/home/plr# 
root@kultorvet:/home/plr# mount -v /dev/sda1 /mnt/usb
mount: you didn't specify a filesystem type for /dev/sda1
       I will try type vfat
mount: wrong fs type, bad option, bad superblock on /dev/sda1,
       missing codepage or helper program, or other error
       In some cases useful info is found in syslog - try
       dmesg | tail  or so

root@kultorvet:/home/plr# dd if=/dev/sda count=1 | hexdump -C
1+0 records in
1+0 records out
512 bytes (512 B) copied, 0.00160636 s, 319 kB/s
00000000  fa 31 c0 8e d8 8e d0 bc  00 7c 89 e6 06 57 8e c0  |ú1À.Ø.м.|.æ.W.À|
00000010  fb fc bf 00 06 b9 00 01  f3 a5 ea 1f 06 00 00 52  |ûü¿..¹..ó¥ê....R|
00000020  52 b4 41 bb aa 55 31 c9  30 f6 f9 cd 13 72 13 81  |R´A»ªU1É0öùÍ.r..|
00000030  fb 55 aa 75 0d d1 e9 73  09 66 c7 06 8d 06 b4 42  |ûUªu.Ñés.fÇ...´B|
00000040  eb 15 5a b4 08 cd 13 83  e1 3f 51 0f b6 c6 40 f7  |ë.Z´.Í..á?Q.¶Æ@÷|
00000050  e1 52 50 66 31 c0 66 99  e8 66 00 e8 21 01 4d 69  |áRPf1Àf.èf.è!.Mi|
00000060  73 73 69 6e 67 20 6f 70  65 72 61 74 69 6e 67 20  |ssing operating |
00000070  73 79 73 74 65 6d 2e 0d  0a 66 60 66 31 d2 bb 00  |system...f`f1Ò».|
00000080  7c 66 52 66 50 06 53 6a  01 6a 10 89 e6 66 f7 36  ||fRfP.Sj.j..æf÷6|
00000090  f4 7b c0 e4 06 88 e1 88  c5 92 f6 36 f8 7b 88 c6  |ô{Àä..á.Å.ö6ø{.Æ|
000000a0  08 e1 41 b8 01 02 8a 16  fa 7b cd 13 8d 64 10 66  |.áA¸....ú{Í..d.f|
000000b0  61 c3 e8 c4 ff be be 7d  bf be 07 b9 20 00 f3 a5  |aÃèÄÿ¾¾}¿¾.¹ .ó¥|
000000c0  c3 66 60 89 e5 bb be 07  b9 04 00 31 c0 53 51 f6  |Ãf`.廾.¹..1ÀSQö|
000000d0  07 80 74 03 40 89 de 83  c3 10 e2 f3 48 74 5b 79  |..t.@.Þ.Ã.âóHt[y|
000000e0  39 59 5b 8a 47 04 3c 0f  74 06 24 7f 3c 05 75 22  |9Y[.G.<.t.$.<.u"|
000000f0  66 8b 47 08 66 8b 56 14  66 01 d0 66 21 d2 75 03  |f.G.f.V.f.Ðf!Òu.|
00000100  66 89 c2 e8 ac ff 72 03  e8 b6 ff 66 8b 46 1c e8  |f.Âè¬ÿr.è¶ÿf.F.è|
00000110  a0 ff 83 c3 10 e2 cc 66  61 c3 e8 62 00 4d 75 6c  | ÿ.Ã.âÌfaÃèb.Mul|
00000120  74 69 70 6c 65 20 61 63  74 69 76 65 20 70 61 72  |tiple active par|
00000130  74 69 74 69 6f 6e 73 2e  0d 0a 66 8b 44 08 66 03  |titions...f.D.f.|
00000140  46 1c 66 89 44 08 e8 30  ff 72 13 81 3e fe 7d 55  |F.f.D.è0ÿr..>þ}U|
00000150  aa 0f 85 06 ff bc fa 7b  5a 5f 07 fa ff e4 e8 1e  |ª...ÿ¼ú{Z_.úÿäè.|
00000160  00 4f 70 65 72 61 74 69  6e 67 20 73 79 73 74 65  |.Operating syste|
00000170  6d 20 6c 6f 61 64 20 65  72 72 6f 72 2e 0d 0a 5e  |m load error...^|
00000180  ac b4 0e 8a 3e 62 04 b3  07 cd 10 3c 0a 75 f1 cd  |¬´..>b.³.Í.<.uñÍ|
00000190  18 f4 eb fd 00 00 00 00  00 00 00 00 00 00 00 00  |.ôëý............|
000001a0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
000001b0  00 00 00 00 00 00 00 00  06 a0 05 00 00 00 80 01  |......... ......|
000001c0  01 00 0c f5 fe fb 3e 00  00 00 72 61 ed 00 00 00  |...õþû>...raí...|
000001d0  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  |..............Uª|
00000200
root@kultorvet:/home/plr# fdisk -l /dev/sda

Disk /dev/sda: 7969 MB, 7969177600 bytes
246 heads, 62 sectors/track, 1020 cylinders
Units = cylinders of 15252 * 512 = 7809024 bytes
Disk identifier: 0x0005a006

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1        1020     7778489    c  W95 FAT32 (LBA)
root@kultorvet:/home/plr# dd if=/dev/sda1 count=1 | hexdump -C
00000000  eb 58 90 6d 6b 64 6f 73  66 73 00 00 02 08 20 00  |ëX.mkdosfs.... .|
1+0 records in
1+0 records out
00000010  02 00 00 00 00 f8 00 00  3e 00 f6 00 00 00 00 00  |.....ø..>.ö.....|
512 bytes (512 B) copied00000020  72 61 ed 00 3b 3b 00 00  00 00 00 00 02 00 00 00  |raí.;;..........|
00000030  01 00 06 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
, 0.00176194 s, 291 kB/s
00000040  00 00 29 96 4b 0a 4e 20  20 20 20 20 20 20 20 20  |..).K.N         |
00000050  20 20 46 41 54 33 32 20  20 20 0e 1f be 77 7c ac  |  FAT32   ..¾w|¬|
00000060  22 c0 74 0b 56 b4 0e bb  07 00 cd 10 5e eb f0 32  |"Àt.V´.»..Í.^ëð2|
00000070  e4 cd 16 cd 19 eb fe 54  68 69 73 20 69 73 20 6e  |äÍ.Í.ëþThis is n|
00000080  6f 74 20 61 20 62 6f 6f  74 61 62 6c 65 20 64 69  |ot a bootable di|
00000090  73 6b 2e 20 20 50 6c 65  61 73 65 20 69 6e 73 65  |sk.  Please inse|
000000a0  72 74 20 61 20 62 6f 6f  74 61 62 6c 65 20 66 6c  |rt a bootable fl|
000000b0  6f 70 70 79 20 61 6e 64  0d 0a 70 72 65 73 73 20  |oppy and..press |
000000c0  61 6e 79 20 6b 65 79 20  74 6f 20 74 72 79 20 61  |any key to try a|
000000d0  67 61 69 6e 20 2e 2e 2e  20 0d 0a 00 00 00 00 00  |gain ... .......|
000000e0  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  |..............Uª|
00000200
root@kultorvet:/home/plr# file -s /dev/sda1
/dev/sda1: x86 boot sector, mkdosfs boot message display, code offset 0x58, OEM-ID " mkdosfs", sectors/cluster 8, 
Media descriptor 0xf8, heads 246, sectors 15556978 (volumes > 32 MB) , FAT (32 bit), sectors/FAT 15163, serial num
ber 0x4e0a4b96, label: "           "
root@kultorvet:/home/plr# 
root@kultorvet:/home/plr# mount /dev/sda1 /mnt/usb
mount: wrong fs type, bad option, bad superblock on /dev/sda1,
       missing codepage or helper program, or other error
       In some cases useful info is found in syslog - try
       dmesg | tail  or so

root@kultorvet:/home/plr# dd if=/dev/sda count=1 | hexdump -C
1+0 records in
1+0 records out
00000000  fa 31 c0 8e d8 8e d0 bc  00 7c 89 e6 06 57 8e c0  |ú1À.Ø.м.|.æ.W.À|
512 bytes (512 B) copied00000010  fb fc bf 00 06 b9 00 01  f3 a5 ea 1f 06 00 00 52  |ûü¿..¹..ó¥ê....R|
, 0.00161472 s, 317 kB/s
00000020  52 b4 41 bb aa 55 31 c9  30 f6 f9 cd 13 72 13 81  |R´A»ªU1É0öùÍ.r..|
00000030  fb 55 aa 75 0d d1 e9 73  09 66 c7 06 8d 06 b4 42  |ûUªu.Ñés.fÇ...´B|
00000040  eb 15 5a b4 08 cd 13 83  e1 3f 51 0f b6 c6 40 f7  |ë.Z´.Í..á?Q.¶Æ@÷|
00000050  e1 52 50 66 31 c0 66 99  e8 66 00 e8 21 01 4d 69  |áRPf1Àf.èf.è!.Mi|
00000060  73 73 69 6e 67 20 6f 70  65 72 61 74 69 6e 67 20  |ssing operating |
00000070  73 79 73 74 65 6d 2e 0d  0a 66 60 66 31 d2 bb 00  |system...f`f1Ò».|
00000080  7c 66 52 66 50 06 53 6a  01 6a 10 89 e6 66 f7 36  ||fRfP.Sj.j..æf÷6|
00000090  f4 7b c0 e4 06 88 e1 88  c5 92 f6 36 f8 7b 88 c6  |ô{Àä..á.Å.ö6ø{.Æ|
000000a0  08 e1 41 b8 01 02 8a 16  fa 7b cd 13 8d 64 10 66  |.áA¸....ú{Í..d.f|
000000b0  61 c3 e8 c4 ff be be 7d  bf be 07 b9 20 00 f3 a5  |aÃèÄÿ¾¾}¿¾.¹ .ó¥|
000000c0  c3 66 60 89 e5 bb be 07  b9 04 00 31 c0 53 51 f6  |Ãf`.廾.¹..1ÀSQö|
000000d0  07 80 74 03 40 89 de 83  c3 10 e2 f3 48 74 5b 79  |..t.@.Þ.Ã.âóHt[y|
000000e0  39 59 5b 8a 47 04 3c 0f  74 06 24 7f 3c 05 75 22  |9Y[.G.<.t.$.<.u"|
000000f0  66 8b 47 08 66 8b 56 14  66 01 d0 66 21 d2 75 03  |f.G.f.V.f.Ðf!Òu.|
00000100  66 89 c2 e8 ac ff 72 03  e8 b6 ff 66 8b 46 1c e8  |f.Âè¬ÿr.è¶ÿf.F.è|
00000110  a0 ff 83 c3 10 e2 cc 66  61 c3 e8 62 00 4d 75 6c  | ÿ.Ã.âÌfaÃèb.Mul|
00000120  74 69 70 6c 65 20 61 63  74 69 76 65 20 70 61 72  |tiple active par|
00000130  74 69 74 69 6f 6e 73 2e  0d 0a 66 8b 44 08 66 03  |titions...f.D.f.|
00000140  46 1c 66 89 44 08 e8 30  ff 72 13 81 3e fe 7d 55  |F.f.D.è0ÿr..>þ}U|
00000150  aa 0f 85 06 ff bc fa 7b  5a 5f 07 fa ff e4 e8 1e  |ª...ÿ¼ú{Z_.úÿäè.|
00000160  00 4f 70 65 72 61 74 69  6e 67 20 73 79 73 74 65  |.Operating syste|
00000170  6d 20 6c 6f 61 64 20 65  72 72 6f 72 2e 0d 0a 5e  |m load error...^|
00000180  ac b4 0e 8a 3e 62 04 b3  07 cd 10 3c 0a 75 f1 cd  |¬´..>b.³.Í.<.uñÍ|
00000190  18 f4 eb fd 00 00 00 00  00 00 00 00 00 00 00 00  |.ôëý............|
000001a0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
000001b0  00 00 00 00 00 00 00 00  06 a0 05 00 00 00 80 01  |......... ......|
000001c0  01 00 0c f5 fe fb 3e 00  00 00 72 61 ed 00 00 00  |...õþû>...raí...|
000001d0  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  |..............Uª|
00000200
root@kultorvet:/home/plr# fdisk -l /dev/sda

Disk /dev/sda: 7969 MB, 7969177600 bytes
246 heads, 62 sectors/track, 1020 cylinders
Units = cylinders of 15252 * 512 = 7809024 bytes
Disk identifier: 0x0005a006

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1        1020     7778489    c  W95 FAT32 (LBA)
root@kultorvet:/home/plr# dd if=/dev/sda1 count=1 | hexdump -C
1+0 records in
1+0 records out
00000000  eb 58 90 6d 6b 64 6f 73  66 73 00 00 02 08 20 00  |ëX.mkdosfs.... .|
512 bytes (512 B) copied00000010  02 00 00 00 00 f8 00 00  3e 00 f6 00 00 00 00 00  |.....ø..>.ö.....|
00000020  72 61 ed 00 40 3b 00 00  00 00 00 00 02 00 00 00  |raí.@;..........|
, 0.00211989 s, 242 kB/s
00000030  01 00 06 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000040  00 00 29 8d 9e da e8 55  42 55 4e 54 55 20 46 4f  |..)..ÚèUBUNTU FO|
00000050  52 4d 46 41 54 33 32 20  20 20 0e 1f be 77 7c ac  |RMFAT32   ..¾w|¬|
00000060  22 c0 74 0b 56 b4 0e bb  07 00 cd 10 5e eb f0 32  |"Àt.V´.»..Í.^ëð2|
00000070  e4 cd 16 cd 19 eb fe 54  68 69 73 20 69 73 20 6e  |äÍ.Í.ëþThis is n|
00000080  6f 74 20 61 20 62 6f 6f  74 61 62 6c 65 20 64 69  |ot a bootable di|
00000090  73 6b 2e 20 20 50 6c 65  61 73 65 20 69 6e 73 65  |sk.  Please inse|
000000a0  72 74 20 61 20 62 6f 6f  74 61 62 6c 65 20 66 6c  |rt a bootable fl|
000000b0  6f 70 70 79 20 61 6e 64  0d 0a 70 72 65 73 73 20  |oppy and..press |
000000c0  61 6e 79 20 6b 65 79 20  74 6f 20 74 72 79 20 61  |any key to try a|
000000d0  67 61 69 6e 20 2e 2e 2e  20 0d 0a 00 00 00 00 00  |gain ... .......|
000000e0  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  |..............Uª|
00000200
root@kultorvet:/home/plr# file -s /dev/sda1
/dev/sda1: x86 boot sector, mkdosfs boot message display, code offset 0x58, OEM-ID " mkdosfs", sectors/cluster 8, Media descriptor 0xf8, heads 246, sectors 15556978 (volumes > 32 MB) , FAT (32 bit), sectors/FAT 15168, serial number 0xe8da9e8d, label: "UBUNTU FORM"
root@kultorvet:/home/plr# 

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