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发表于 2019-10-12 10:25:11
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特权模式下，第一步就不行了，然后ls -l /dev/mtd* 可以看到
! @7 u9 ]: Y$ ~) Mcrw------- 1 root root 90, 0 Jan 1 08:00 /dev/mtd0
6 E. z+ ~9 x2 g) f F- mcrw------- 1 root root 90, 1 Jan 1 08:00 /dev/mtd0ro
9 s) I8 h" }+ `0 f, n# c, H" Kcrw------- 1 root root 90, 2 Jan 1 08:00 /dev/mtd1
" T# P& Z" y! ycrw------- 1 root root 90, 3 Jan 1 08:00 /dev/mtd1ro
0 o; u7 I. l1 P" }3 v+ D4 Qcrw------- 1 root root 90, 4 Jan 1 08:00 /dev/mtd2
$ E7 C0 L7 T$ V/ ]5 a( w% ^& o ocrw------- 1 root root 90, 5 Jan 1 08:00 /dev/mtd2ro
; W4 w1 G/ _' ncrw------- 1 root root 90, 6 Jan 1 08:00 /dev/mtd3
6 y8 [( l7 S& C( [6 }crw------- 1 root root 90, 7 Jan 1 08:00 /dev/mtd3ro
: ?4 |, D# t+ ]% G7 Zbrw------- 1 root root 31, 0 Jan 1 08:00 /dev/mtdblock0
8 @! k# C* V# h& v2 Nbrw------- 1 root root 31, 1 Jan 1 08:00 /dev/mtdblock1
7 E0 C) M6 q: [0 _brw------- 1 root root 31, 2 Jan 1 08:00 /dev/mtdblock2
4 |) F% m% F w: u( g5 |" f/ Wbrw------- 1 root root 31, 3 Jan 1 08:00 /dev/mtdblock3
/ X( m4 k$ k0 G" n6 J但是执行有如下错误
* t! m. Y* C0 |/ _) v. ?sh-4.3# dd if=fullcat.bin of=/dev/mtd0 7 {# v- ], w" M" |0 W3 w
dd: writing to '/dev/mtd0': No space left on device * c K# a6 l8 a7 ^
1601+0 records in
+ x- H- L$ f$ e4 P" y. s1600+0 records out
* m' E6 H$ w( N! Q* l7 Z5 o* v819200 bytes (819 kB, 800 KiB) copied, 1.40157 s, 584 kB/s
. k* O( G) d* Xsh-4.3# dd if=fullcat.bin of=/dev/mtd0ro - A2 D0 ]' }: b- I# L# H# h
dd: failed to open '/dev/mtd0ro': Permission denied 7 V u0 @. N4 R
sh-4.3# chmod 777 /dev/mtd0ro 8 H7 o! R1 J: O1 y) J* N9 Q0 T$ l
sh-4.3# dd if=fullcat.bin of=/dev/mtd0ro
) K4 |' k- ^# W9 E4 R: X0 ~& \6 \dd: failed to open '/dev/mtd0ro': Permission denied & v% D) G1 r; z6 E1 b1 w
sh-4.3# : i" C" g d3 \5 W' P4 s* u
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