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( \4 z1 d+ R, c4 a G
特权模式下，第一步就不行了，然后ls -l /dev/mtd* 可以看到
' a6 l* Y6 r5 t U& tcrw------- 1 root root 90, 0 Jan 1 08:00 /dev/mtd0
o4 b/ [9 B5 f, g. ecrw------- 1 root root 90, 1 Jan 1 08:00 /dev/mtd0ro 5 j$ z1 j6 R5 [
crw------- 1 root root 90, 2 Jan 1 08:00 /dev/mtd1 / B, `5 C# K! M4 U% p' {
crw------- 1 root root 90, 3 Jan 1 08:00 /dev/mtd1ro . B( H% r3 b9 q [! `2 g
crw------- 1 root root 90, 4 Jan 1 08:00 /dev/mtd2 3 S. H2 J* b7 H+ p. [ `; p' J2 e* q1 _$ `0 h
crw------- 1 root root 90, 5 Jan 1 08:00 /dev/mtd2ro ( F2 ]& j! ?6 O4 s" D" z7 V
crw------- 1 root root 90, 6 Jan 1 08:00 /dev/mtd3 5 F) X0 {4 r9 D' F
crw------- 1 root root 90, 7 Jan 1 08:00 /dev/mtd3ro
& p- |8 F' L6 Z( c; i: rbrw------- 1 root root 31, 0 Jan 1 08:00 /dev/mtdblock0 v Q$ T2 b0 f& p% M6 _# A
brw------- 1 root root 31, 1 Jan 1 08:00 /dev/mtdblock1
3 ?- B: Y+ y7 r9 r/ t+ Qbrw------- 1 root root 31, 2 Jan 1 08:00 /dev/mtdblock2 4 s4 S: I R! z) w1 u- H2 A
brw------- 1 root root 31, 3 Jan 1 08:00 /dev/mtdblock3
: A- o% D$ e4 s但是执行有如下错误& H$ ]- M! o1 e5 K
sh-4.3# dd if=fullcat.bin of=/dev/mtd0
, h' j7 a4 z; S* ldd: writing to '/dev/mtd0': No space left on device + U4 V7 \5 X5 Y
1601+0 records in : f* Z+ B/ `) d0 p y
1600+0 records out * p6 L% ^; x+ E+ |, o8 H0 A* ?+ G2 x
819200 bytes (819 kB, 800 KiB) copied, 1.40157 s, 584 kB/s " }1 U1 z( u1 k0 Q! \" |0 k
sh-4.3# dd if=fullcat.bin of=/dev/mtd0ro % Y& u2 X& v3 s o& |% d
dd: failed to open '/dev/mtd0ro': Permission denied : |" y4 u. S: `- f/ L* c% L
sh-4.3# chmod 777 /dev/mtd0ro
: o6 V; q4 ^, l4 tsh-4.3# dd if=fullcat.bin of=/dev/mtd0ro & X l7 { D+ b' k- u8 U
dd: failed to open '/dev/mtd0ro': Permission denied
9 Y: P; P$ \/ }, v: Osh-4.3# ( I: p2 y' E( ~# {
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