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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
6 _. E0 H" \4 z. q0 ~crw------- 1 root root 90, 0 Jan 1 08:00 /dev/mtd0 2 M( O3 ?4 s7 D! M) y
crw------- 1 root root 90, 1 Jan 1 08:00 /dev/mtd0ro ; |5 f5 L: e. T! F
crw------- 1 root root 90, 2 Jan 1 08:00 /dev/mtd1
3 |( E& ~6 q- ~crw------- 1 root root 90, 3 Jan 1 08:00 /dev/mtd1ro & Q T6 H8 R: ]% ^2 i
crw------- 1 root root 90, 4 Jan 1 08:00 /dev/mtd2 / f2 z% o1 V- x2 d
crw------- 1 root root 90, 5 Jan 1 08:00 /dev/mtd2ro 8 V" D1 i5 |! V5 @" Z8 s, u( b' {
crw------- 1 root root 90, 6 Jan 1 08:00 /dev/mtd3 6 ]! |& ]* D1 `, h, E2 e- q. z" [
crw------- 1 root root 90, 7 Jan 1 08:00 /dev/mtd3ro % g3 T6 I( o$ x4 o1 ?, e
brw------- 1 root root 31, 0 Jan 1 08:00 /dev/mtdblock0
$ q' Y% s @( qbrw------- 1 root root 31, 1 Jan 1 08:00 /dev/mtdblock1 " E/ ^; x2 M6 j1 I' s. [' q6 m' l
brw------- 1 root root 31, 2 Jan 1 08:00 /dev/mtdblock2
/ C- C4 S+ X8 R0 S6 Q- u' F( R; F% dbrw------- 1 root root 31, 3 Jan 1 08:00 /dev/mtdblock3 ; L1 b0 v- e) K' @% i( g
但是执行有如下错误
. V9 u; ]5 h7 Osh-4.3# dd if=fullcat.bin of=/dev/mtd0 ! r% m& i) G& u0 |
dd: writing to '/dev/mtd0': No space left on device : H# J, \% ]( c: M( q) m5 n
1601+0 records in & f7 C. t! x1 f4 x( q% V
1600+0 records out ( |# F( ]2 F2 H% Q
819200 bytes (819 kB, 800 KiB) copied, 1.40157 s, 584 kB/s
& K( k0 B1 s- U2 y( F/ Q+ E% ~( qsh-4.3# dd if=fullcat.bin of=/dev/mtd0ro * E# _2 z: _9 e4 H8 j
dd: failed to open '/dev/mtd0ro': Permission denied
/ P ^! }9 Y) I; p9 W1 x- a2 Gsh-4.3# chmod 777 /dev/mtd0ro
1 g! {: U# `" F( a: P& ~1 D5 j9 Esh-4.3# dd if=fullcat.bin of=/dev/mtd0ro
6 X9 @/ c0 m5 g, K/ tdd: failed to open '/dev/mtd0ro': Permission denied
# y. y- C7 C- T6 jsh-4.3#
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