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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
, `+ M' ^( I) w0 z4 k7 E4 Lcrw------- 1 root root 90, 0 Jan 1 08:00 /dev/mtd0 ; R5 C) Y/ n1 b. ?3 ]4 r
crw------- 1 root root 90, 1 Jan 1 08:00 /dev/mtd0ro , z- U; J, z4 _. E
crw------- 1 root root 90, 2 Jan 1 08:00 /dev/mtd1
& v$ P' p6 Q. u( m. b8 U1 scrw------- 1 root root 90, 3 Jan 1 08:00 /dev/mtd1ro # n- H* k) _' Z& h% U" y+ Q& H
crw------- 1 root root 90, 4 Jan 1 08:00 /dev/mtd2
) E& b. w7 |1 T; P, r6 Jcrw------- 1 root root 90, 5 Jan 1 08:00 /dev/mtd2ro " j& B9 V5 M9 ]% R% }4 y" l
crw------- 1 root root 90, 6 Jan 1 08:00 /dev/mtd3
8 A! V! B. ?2 Y- L6 ]crw------- 1 root root 90, 7 Jan 1 08:00 /dev/mtd3ro 3 A L0 i1 l2 ]3 \- Y: P
brw------- 1 root root 31, 0 Jan 1 08:00 /dev/mtdblock0
: ~) L/ d$ W+ Q/ k, n5 X9 rbrw------- 1 root root 31, 1 Jan 1 08:00 /dev/mtdblock1 * n7 V7 X* L- r# A! t3 j8 ]
brw------- 1 root root 31, 2 Jan 1 08:00 /dev/mtdblock2 + w$ b* x' A& ~) e5 Z6 f, W" e) Z
brw------- 1 root root 31, 3 Jan 1 08:00 /dev/mtdblock3
8 v: N$ Y. l; ?. ]% z \但是执行有如下错误
6 }5 e2 N, @: Y7 z3 Csh-4.3# dd if=fullcat.bin of=/dev/mtd0
3 p' H2 w% o" \: _dd: writing to '/dev/mtd0': No space left on device ) o- Y4 d; s0 m9 `. ~7 T
1601+0 records in 5 u) \" Z( J/ e, i* W6 M
1600+0 records out ! U+ j, R7 ~. v V3 Z; o% s! }" u
819200 bytes (819 kB, 800 KiB) copied, 1.40157 s, 584 kB/s
7 r8 P% g* c: A% f; |& T9 ash-4.3# dd if=fullcat.bin of=/dev/mtd0ro
& _* Q Y; V9 ^! o. d+ }5 wdd: failed to open '/dev/mtd0ro': Permission denied
# H& f8 B% h/ k; X) \9 Ush-4.3# chmod 777 /dev/mtd0ro ; b" D" ~4 }: W) a
sh-4.3# dd if=fullcat.bin of=/dev/mtd0ro 7 L2 ]& J; s/ y
dd: failed to open '/dev/mtd0ro': Permission denied
# f/ T% N0 |5 N0 i3 t% psh-4.3#
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