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发表于 2019-10-12 10:25:11
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2 m# b7 ]$ s0 Y6 `. a+ F$ b
特权模式下，第一步就不行了，然后ls -l /dev/mtd* 可以看到
3 L/ M0 H+ S; P8 W( w) l( Y- s# Xcrw------- 1 root root 90, 0 Jan 1 08:00 /dev/mtd0 ' h! ]0 }8 X' [
crw------- 1 root root 90, 1 Jan 1 08:00 /dev/mtd0ro
- Q$ M" r, W- f I7 y( I% Y# g* Qcrw------- 1 root root 90, 2 Jan 1 08:00 /dev/mtd1
]! t6 [7 i9 p( K" K: icrw------- 1 root root 90, 3 Jan 1 08:00 /dev/mtd1ro / u8 I; o6 e Q6 g7 K
crw------- 1 root root 90, 4 Jan 1 08:00 /dev/mtd2
" @; C3 ?0 ^" g4 @# [crw------- 1 root root 90, 5 Jan 1 08:00 /dev/mtd2ro , {" l7 m- y5 s P7 m
crw------- 1 root root 90, 6 Jan 1 08:00 /dev/mtd3
$ D+ x5 [8 H. I+ ocrw------- 1 root root 90, 7 Jan 1 08:00 /dev/mtd3ro # v( U! p0 l- d+ L$ Y2 `
brw------- 1 root root 31, 0 Jan 1 08:00 /dev/mtdblock0
# Q5 \8 p, m* J1 J1 U# y; i) abrw------- 1 root root 31, 1 Jan 1 08:00 /dev/mtdblock1
& E* m( }& h# O+ Obrw------- 1 root root 31, 2 Jan 1 08:00 /dev/mtdblock2 % D+ f" ]& l6 Q# ]- T1 I: @
brw------- 1 root root 31, 3 Jan 1 08:00 /dev/mtdblock3
2 Z5 V' I/ O# j! F1 N) A% |但是执行有如下错误2 A( c+ G9 Y' M* B9 J
sh-4.3# dd if=fullcat.bin of=/dev/mtd0 : V+ Q% I+ ~' K X/ U6 M6 @" z5 h8 G
dd: writing to '/dev/mtd0': No space left on device 7 ]3 k& {5 X# t h5 O* ^- d
1601+0 records in
6 w7 y' ^) a1 ^% V9 N% L0 L1600+0 records out
( M7 L- r k; `3 w5 ^" w819200 bytes (819 kB, 800 KiB) copied, 1.40157 s, 584 kB/s 8 n% E8 Z2 n/ E: C9 A) P" o3 W
sh-4.3# dd if=fullcat.bin of=/dev/mtd0ro 4 x* i' w, E5 W# r
dd: failed to open '/dev/mtd0ro': Permission denied - L, ~5 n: t5 G% c7 N3 f
sh-4.3# chmod 777 /dev/mtd0ro
0 i9 i9 q' S P' g* u7 T4 Ish-4.3# dd if=fullcat.bin of=/dev/mtd0ro
" e# R% i3 j$ [- y: u& O+ sdd: failed to open '/dev/mtd0ro': Permission denied
' T, K; i2 Z! r( y5 ush-4.3# ; r$ ~- C% B2 v, |7 f. e
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