brock@arden:~/sysadmin/notes/tryit2$ BPB_SecPerClus=16
brock@arden:~/sysadmin/notes/tryit2$ 
brock@arden:~/sysadmin/notes/tryit2$ FirstDataSection=97
brock@arden:~/sysadmin/notes/tryit2$ od -A d -j 26 -N 2 -t d2 issue.txt.direntry.txt
0000026   2545
0000028
brock@arden:~/sysadmin/notes/tryit2$ IssueTxtCluster1=2545
brock@arden:~/sysadmin/notes/tryit2$ od -A d -j 28 -N 4 -t d4 issue.txt.direntry.txt
0000028         103
0000032
brock@arden:~/sysadmin/notes/tryit2$ IssueTxtSize=103
brock@arden:~/sysadmin/notes/tryit2$ function DataSector2Cluster()
> {
>    

brock@arden:~/sysadmin/notes/tryit2$ 
brock@arden:~/sysadmin/notes/tryit2$ FirstDataSector=97
brock@arden:~/sysadmin/notes/tryit2$ function DataSector2Cluster()
> {
>    local result=$(( ( ( $1 - 2 ) * $BPB_SecPerClus ) + $FirstDataSection ))
>    echo "${result}"
> }
brock@arden:~/sysadmin/notes/tryit2$ function DataSector2Cluster($FirstDataSectytor)
bash: syntax error near unexpected token `$FirstDataSectytor'
brock@arden:~/sysadmin/notes/tryit2$ function DataSector2Cluster($FirstDataSecttor)
bash: syntax error near unexpected token `$FirstDataSecttor'
brock@arden:~/sysadmin/notes/tryit2$ DataSector2Cluster($FirstDataSector)
bash: syntax error near unexpected token `$FirstDataSector'
brock@arden:~/sysadmin/notes/tryit2$ DataSector2Cluster $FirstDataSector
1617
brock@arden:~/sysadmin/notes/tryit2$ dc
1617 8192 *
f
13246464
brock@arden:~/sysadmin/notes/tryit2$ dd if=boot.img of=issue.txt.sect bs=512 count=1 skip=1617
1+0 records in
1+0 records out
512 bytes (512 B) copied, 0.0306697 s, 16.7 kB/s
brock@arden:~/sysadmin/notes/tryit2$ grep -q 2016-03-18 boot.img 
brock@arden:~/sysadmin/notes/tryit2$ echo $?
0
brock@arden:~/sysadmin/notes/tryit2$ ls -lL boot.img
-rw-r--r-- 2 brock users 62914560 Feb 19 14:48 boot.img
brock@arden:~/sysadmin/notes/tryit2$ dc
2 20 ^ f
1048576
brock@arden:~/sysadmin/notes/tryit2$ split -b 1048576 boot.img imageblocks
brock@arden:~/sysadmin/notes/tryit2$ ls -l
total 61508
-rw-r--r-- 1 brock users     512 Apr 24 16:20 boot.BPB.img
lrwxrwxrwx 1 brock users      11 Apr 24 16:19 boot.img -> ../boot.img
-rw-r--r-- 1 brock users    9586 Apr 24 17:27 boot.rootdir.asc
-rw-r--r-- 1 brock users   16384 Apr 24 17:17 boot.rootdir.img
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksaa
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksab
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksac
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksad
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksae
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksaf
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksag
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksah
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksai
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksaj
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksak
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksal
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksam
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksan
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksao
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksap
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksaq
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksar
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksas
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksat
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksau
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksav
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksaw
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksax
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksay
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksaz
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksba
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksbb
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksbc
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksbd
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksbe
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksbf
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksbg
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksbh
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksbi
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksbj
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksbk
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksbl
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksbm
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksbn
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksbo
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksbp
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksbq
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksbr
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksbs
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksbt
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksbu
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksbv
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksbw
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksbx
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksby
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksbz
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksca
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblockscb
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblockscc
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblockscd
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksce
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblockscf
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblockscg
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksch
-rw-r--r-- 1 brock users      32 Apr 24 17:35 issue.txt.direntry.txt
-rw-r--r-- 1 brock users     512 Apr 24 20:48 issue.txt.sect
-rw-r--r-- 1 brock users    6727 Apr 24 20:32 RUNOUT-00.TXT
-rw-r--r-- 1 brock users    6707 Apr 24 17:36 RUNOUT-00.TXT~
-rw-r--r-- 1 brock users    1611 Apr 24 20:49 #RUNOUT-01.TXT#
-rw-r--r-- 1 brock users    1436 Apr 24 20:46 RUNOUT-01.TXT
-rw-r--r-- 1 brock users     521 Apr 24 20:39 RUNOUT-01.TXT~
brock@arden:~/sysadmin/notes/tryit2$ find imageblocks* -exec grep {} -q 2016-03-18 {} \; -print
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
grep: 2016-03-18: No such file or directory
brock@arden:~/sysadmin/notes/tryit2$ find imageblocks* -exec grep -q 2016-03-18 {} \; -print
imageblocksat
brock@arden:~/sysadmin/notes/tryit2$ rm imageblocksb*
brock@arden:~/sysadmin/notes/tryit2$ rm imageblocksa[a-s]*
brock@arden:~/sysadmin/notes/tryit2$ rm imageblocksa[u-z]*
brock@arden:~/sysadmin/notes/tryit2$ ls -l
total 9292
-rw-r--r-- 1 brock users     512 Apr 24 16:20 boot.BPB.img
lrwxrwxrwx 1 brock users      11 Apr 24 16:19 boot.img -> ../boot.img
-rw-r--r-- 1 brock users    9586 Apr 24 17:27 boot.rootdir.asc
-rw-r--r-- 1 brock users   16384 Apr 24 17:17 boot.rootdir.img
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksat
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksca
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblockscb
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblockscc
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblockscd
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksce
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblockscf
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblockscg
-rw-r--r-- 1 brock users 1048576 Apr 24 20:53 imageblocksch
-rw-r--r-- 1 brock users      32 Apr 24 17:35 issue.txt.direntry.txt
-rw-r--r-- 1 brock users     512 Apr 24 20:48 issue.txt.sect
-rw-r--r-- 1 brock users    6727 Apr 24 20:32 RUNOUT-00.TXT
-rw-r--r-- 1 brock users    6707 Apr 24 17:36 RUNOUT-00.TXT~
-rw-r--r-- 1 brock users    9152 Apr 24 20:55 #RUNOUT-01.TXT#
-rw-r--r-- 1 brock users    1436 Apr 24 20:46 RUNOUT-01.TXT
-rw-r--r-- 1 brock users     521 Apr 24 20:39 RUNOUT-01.TXT~
brock@arden:~/sysadmin/notes/tryit2$ rm imageblocksc*
brock@arden:~/sysadmin/notes/tryit2$ grep -q 2016-03-18 imageblocksat 
brock@arden:~/sysadmin/notes/tryit2$ echo $?
0
brock@arden:~/sysadmin/notes/tryit2$ split -b 8192 imageblocksat sectors
brock@arden:~/sysadmin/notes/tryit2$ find sectors* -exec grep -q 2016-03-18 {} \; -print
sectorsen
brock@arden:~/sysadmin/notes/tryit2$ python
Python 2.7.6 (default, Oct 26 2016, 20:30:19) 
[GCC 4.8.4] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> 't'-'a'
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: unsupported operand type(s) for -: 'str' and 'str'
>>> ord('t')-ord('a')
19
>>> 1048576/8192
128
>>> 19*128+118
2550
>>> 
brock@arden:~/sysadmin/notes/tryit2$ dd if=boot.img of=qsect bs=8192 skip=2550 count=1
1+0 records in
1+0 records out
8192 bytes (8.2 kB) copied, 0.0710741 s, 115 kB/s
brock@arden:~/sysadmin/notes/tryit2$ dd if=boot.img of=rsect bs=8192 skip=2545 count=1
1+0 records in
1+0 records out
8192 bytes (8.2 kB) copied, 0.0330153 s, 248 kB/s
brock@arden:~/sysadmin/notes/tryit2$ dd if=boot.img of=sect1 bs=8192 skip=2000
5680+0 records in
5680+0 records out
46530560 bytes (47 MB) copied, 0.809085 s, 57.5 MB/s
brock@arden:~/sysadmin/notes/tryit2$ grep -q 2016-03-18 sect1
brock@arden:~/sysadmin/notes/tryit2$ echo $?
0
brock@arden:~/sysadmin/notes/tryit2$ dd if=boot.img of=sect1 bs=8192 skip=3000
4680+0 records in
4680+0 records out
38338560 bytes (38 MB) copied, 0.640111 s, 59.9 MB/s
brock@arden:~/sysadmin/notes/tryit2$ grep -q 2016-03-18 sect1
brock@arden:~/sysadmin/notes/tryit2$ echo $?
1
brock@arden:~/sysadmin/notes/tryit2$ dd if=boot.img of=sect1 bs=8192 skip=2500
5180+0 records in
5180+0 records out
42434560 bytes (42 MB) copied, 0.714611 s, 59.4 MB/s
brock@arden:~/sysadmin/notes/tryit2$ grep -q 2016-03-18 sect1
brock@arden:~/sysadmin/notes/tryit2$ echo $?
0
brock@arden:~/sysadmin/notes/tryit2$ dd if=boot.img of=sect1 bs=8192 skip=2500 count=500
500+0 records in
500+0 records out
4096000 bytes (4.1 MB) copied, 0.0935691 s, 43.8 MB/s
brock@arden:~/sysadmin/notes/tryit2$ grep -q 2016-03-18 sect1
brock@arden:~/sysadmin/notes/tryit2$ echo $?
0
brock@arden:~/sysadmin/notes/tryit2$ dd if=boot.img of=sect1 bs=8192 skip=2500 count=200
200+0 records in
200+0 records out
1638400 bytes (1.6 MB) copied, 0.0748317 s, 21.9 MB/s
brock@arden:~/sysadmin/notes/tryit2$ grep -q 2016-03-18 sect1
brock@arden:~/sysadmin/notes/tryit2$ echo $?
0
brock@arden:~/sysadmin/notes/tryit2$ dd if=boot.img of=sect1 bs=8192 skip=2500 count=64
64+0 records in
64+0 records out
524288 bytes (524 kB) copied, 0.0584425 s, 9.0 MB/s
brock@arden:~/sysadmin/notes/tryit2$ grep -q 2016-03-18 sect1
brock@arden:~/sysadmin/notes/tryit2$ echo $?
0
brock@arden:~/sysadmin/notes/tryit2$ dd if=boot.img of=sect1 bs=8192 skip=2500 count=16
16+0 records in
16+0 records out
131072 bytes (131 kB) copied, 0.0482949 s, 2.7 MB/s
brock@arden:~/sysadmin/notes/tryit2$ grep -q 2016-03-18 sect1
brock@arden:~/sysadmin/notes/tryit2$ echo $?
1
brock@arden:~/sysadmin/notes/tryit2$ dd if=boot.img of=sect1 bs=8192 skip=2520 count=30
30+0 records in
30+0 records out
245760 bytes (246 kB) copied, 0.0501758 s, 4.9 MB/s
brock@arden:~/sysadmin/notes/tryit2$ grep -q 2016-03-18 sect1
brock@arden:~/sysadmin/notes/tryit2$ echo $?
0
brock@arden:~/sysadmin/notes/tryit2$ dd if=boot.img of=sect1 bs=8192 skip=2520 count=20
20+0 records in
20+0 records out
163840 bytes (164 kB) copied, 0.0502236 s, 3.3 MB/s
brock@arden:~/sysadmin/notes/tryit2$ grep -q 2016-03-18 sect1
brock@arden:~/sysadmin/notes/tryit2$ echo $?
1
brock@arden:~/sysadmin/notes/tryit2$ dd if=boot.img of=sect1 bs=8192 skip=2540 count=10
10+0 records in
10+0 records out
81920 bytes (82 kB) copied, 0.0418955 s, 2.0 MB/s
brock@arden:~/sysadmin/notes/tryit2$ grep -q 2016-03-18 sect1
brock@arden:~/sysadmin/notes/tryit2$ echo $?
0
brock@arden:~/sysadmin/notes/tryit2$ dd if=boot.img of=sect1 bs=8192 skip=2540 count=5
5+0 records in
5+0 records out
40960 bytes (41 kB) copied, 0.0361088 s, 1.1 MB/s
brock@arden:~/sysadmin/notes/tryit2$ grep -q 2016-03-18 sect1
brock@arden:~/sysadmin/notes/tryit2$ echo $?
1
brock@arden:~/sysadmin/notes/tryit2$ dd if=boot.img of=sect1 bs=8192 skip=2545 count=5
5+0 records in
5+0 records out
40960 bytes (41 kB) copied, 0.033932 s, 1.2 MB/s
brock@arden:~/sysadmin/notes/tryit2$ grep -q 2016-03-18 sect1
brock@arden:~/sysadmin/notes/tryit2$ echo $?
0
brock@arden:~/sysadmin/notes/tryit2$ dd if=boot.img of=sect1 bs=8192 skip=2545 count=3
3+0 records in
3+0 records out
24576 bytes (25 kB) copied, 0.035746 s, 688 kB/s
brock@arden:~/sysadmin/notes/tryit2$ grep -q 2016-03-18 sect1
brock@arden:~/sysadmin/notes/tryit2$ echo $?
1
brock@arden:~/sysadmin/notes/tryit2$ dd if=boot.img of=sect1 bs=8192 skip=2548 count=2
2+0 records in
2+0 records out
16384 bytes (16 kB) copied, 0.0359826 s, 455 kB/s
brock@arden:~/sysadmin/notes/tryit2$ grep -q 2016-03-18 sect1
brock@arden:~/sysadmin/notes/tryit2$ echo $?
0
brock@arden:~/sysadmin/notes/tryit2$ ls sect1
sect1
brock@arden:~/sysadmin/notes/tryit2$ ls -l sect1
-rw-r--r-- 1 brock users 16384 Apr 24 21:13 sect1
brock@arden:~/sysadmin/notes/tryit2$ dd if=boot.img of=sect1 bs=8192 skip=2548 count=1
1+0 records in
1+0 records out
8192 bytes (8.2 kB) copied, 0.0336721 s, 243 kB/s
brock@arden:~/sysadmin/notes/tryit2$ grep -q 2016-03-18 sect1
brock@arden:~/sysadmin/notes/tryit2$ echo $?
1
brock@arden:~/sysadmin/notes/tryit2$ dd if=boot.img of=cluster2549 bs=8192 skip=2549 count=1
1+0 records in
1+0 records out
8192 bytes (8.2 kB) copied, 0.0339259 s, 241 kB/s
brock@arden:~/sysadmin/notes/tryit2$ grep -q 2016-03-18 sect1
brock@arden:~/sysadmin/notes/tryit2$ echo $?
1
brock@arden:~/sysadmin/notes/tryit2$ grep -q 2016-03-18 cluster2549 
brock@arden:~/sysadmin/notes/tryit2$ echo $?
0
brock@arden:~/sysadmin/notes/tryit2$ dd if=cluster2549 of=cluster2549-sector1 bs=512 skip=1 count=1
1+0 records in
1+0 records out
512 bytes (512 B) copied, 0.0423916 s, 12.1 kB/s
brock@arden:~/sysadmin/notes/tryit2$ BPB_SecPerClus=16
brock@arden:~/sysadmin/notes/tryit2$ function DataSector2Cluster()
> {
>    local result=$(( ( ( $1 - 2 ) * $BPB_SecPerClus ) + $FirstDataSector ))
>    echo "$result"
> }
brock@arden:~/sysadmin/notes/tryit2$ DataSector2Cluster(2545)
bash: syntax error near unexpected token `2545'
brock@arden:~/sysadmin/notes/tryit2$ DataSector2Cluster 2545
40785
brock@arden:~/sysadmin/notes/tryit2$ echo $BPB_SecPerClus 
16
brock@arden:~/sysadmin/notes/tryit2$ echo $FirstDataSector
97
brock@arden:~/sysadmin/notes/tryit2$ dc
2545 2 - f
2543
16 * f
40688
97 + f
40785
brock@arden:~/sysadmin/notes/tryit2$ dd if=boot.img of=sectors.from.40785 bs=512 skip=40785 count=20
20+0 records in
20+0 records out
10240 bytes (10 kB) copied, 0.0287472 s, 356 kB/s
brock@arden:~/sysadmin/notes/tryit2$ grep 2016-03-18 sectors.from.40785 
Binary file sectors.from.40785 matches
brock@arden:~/sysadmin/notes/tryit2$ dd if=boot.img of=issue.txt.cluster skip=40785 bs=512 count=8
8+0 records in
8+0 records out
4096 bytes (4.1 kB) copied, 0.0377886 s, 108 kB/s
brock@arden:~/sysadmin/notes/tryit2$ echo $BPB_ResvcdSecCnt

brock@arden:~/sysadmin/notes/tryit2$ od -A d -j 14 -N 2 -t d2 boot.BPB.img
0000014      1
0000016
brock@arden:~/sysadmin/notes/tryit2$ BPB_RsvdSecCnt=1
brock@arden:~/sysadmin/notes/tryit2$ od -A d -j 22 -N 2 -t d2 boot.BPB.img
0000022     32
0000024
brock@arden:~/sysadmin/notes/tryit2$ BPB_FATSz16=32
brock@arden:~/sysadmin/notes/tryit2$ FATSz=$BPB_FATSz16
brock@arden:~/sysadmin/notes/tryit2$ echo dd if=boot.img of=boot.fat.img bs=512 skip=$BPB_RsvdSecCnt count=$FATSz
dd if=boot.img of=boot.fat.img bs=512 skip=1 count=32
brock@arden:~/sysadmin/notes/tryit2$ echo dd if=boot.img of=boot.fat.img bs=512 skip=$BPB_RsvdSecCnt count=$FATSz
dd if=boot.img of=boot.fat.img bs=512 skip=1 count=32
brock@arden:~/sysadmin/notes/tryit2$ od -A d -j 0 -N 80 -t d2 boot.fat.img 
od: boot.fat.img: No such file or directory
brock@arden:~/sysadmin/notes/tryit2$ dd if=boot.img of=boot.img.fat bs=512 skip=$BPB_RsvdSecCnt count=$FATSz
32+0 records in
32+0 records out
16384 bytes (16 kB) copied, 0.0369708 s, 443 kB/s
brock@arden:~/sysadmin/notes/tryit2$ od -A d -j 0 -N 80 -t d2 boot.img.fat 
0000000     -8     -1     -1      0      0     -1      7      8
0000016      9     10     11     12     13     14     15     16
0000032     17     18     19     20     21     22     23     24
0000048     25     26     27     28     30   4234     31     32
0000064     33     34     35     36     37     38     39     40
0000080
brock@arden:~/sysadmin/notes/tryit2$ od -A d -j $IssueTxtCluster1 -N 1 -t d2 boot.img.fat 
0002545      0
0002546
brock@arden:~/sysadmin/notes/tryit2$