[問題] 使用dd備份SD卡發生錯誤..

看板Linux作者BIAO (超越自己)時間12年前 (2014/01/07 18:39)推噓7(7推 0噓 13→)

留言20則, 6人參與討論串1/2 (看更多)

板上的先進大家好，小弟使用dd指令想將16g SD卡完整備份至32g SD卡，不過複製了兩次.. 都是出現以下錯誤... dd: writing to `/dev/sda': Input/output error 1392393+0 records in 1392392+0 records out 712904704 bytes (713 MB) copied, 626.021 s, 1.1 MB/s (唯這行有些微不同) 請問這是代表32g SD卡損壞嗎!? 將此32g SD卡拿至windows XP系統，依舊可以正常格式化，剛才也放了2GB的檔案，顯示正常@@ (其中16g SD卡是系統碟，32g SD卡是透過讀卡機再和Linux電腦連接) 還請板上的先進不吝回答，謝謝哦.. -- -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 140.124.42.70 ※ 編輯: BIAO 來自: 140.124.42.70 (01/07 19:05)

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lantw44

01/07 19:34, , 1^F

01/07 19:34, 1^F

感謝您的回答，謝謝您的提醒，有關32g SD卡的訊息如下.. [ 7781.739807] sd 2:0:0:0: [sda] 62333952 512-byte logical blocks: (31.9 GB/29.7 GiB) [ 7781.743988] sd 2:0:0:0: Attached scsi generic sg0 type 0 [ 7781.744506] sd 2:0:0:0: [sda] Write Protect is off [ 7781.744506] sd 2:0:0:0: [sda] Mode Sense: 03 00 00 00 [ 7781.746887] sd 2:0:0:0: [sda] No Caching mode page present [ 7781.757446] sd 2:0:0:0: [sda] Assuming drive cache: write through [ 7781.769439] sd 2:0:0:0: [sda] No Caching mode page present [ 7781.775329] sd 2:0:0:0: [sda] Assuming drive cache: write through [ 7781.787322] sda: unknown partition table [ 7781.789581] smsc95xx 1-1.1:1.0: eth0: link up, 100Mbps, full-duplex, lpa 0x41E1 [ 7781.792388] sd 2:0:0:0: [sda] No Caching mode page present [ 7781.798583] sd 2:0:0:0: [sda] Assuming drive cache: write through [ 7781.806274] sd 2:0:0:0: [sda] Attached SCSI removable disk ※ 編輯: BIAO 來自: 140.124.42.70 (01/07 19:44) 還有包含如下訊息... 訊息太多，只貼上相似類似的訊息 [ 7778.600463] sd 1:0:0:0: [sda] Unhandled error code [ 7778.600524] sd 1:0:0:0: [sda] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK [ 7778.600524] sd 1:0:0:0: [sda] CDB: Write(10): 2a 00 00 16 43 c0 00 00 f0 00 [ 7778.600524] end_request: I/O error, dev sda, sector 1459136 [ 7778.764556] sd 1:0:0:0: [sda] Unhandled error code [ 7778.764617] sd 1:0:0:0: [sda] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK [ 7778.764617] sd 1:0:0:0: [sda] CDB: Write(10): 2a 00 00 16 44 b0 00 00 f0 00 [ 7778.764617] end_request: I/O error, dev sda, sector 1459376 ※ 編輯: BIAO 來自: 140.124.42.70 (01/07 19:46)

推

shihchiang

01/08 01:37, , 2^F

01/08 01:37, 2^F

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Debian

01/08 03:11, , 3^F

01/08 03:11, 3^F

回D大的話..我是直接將32g SD卡直接插上讀卡機，然後使用fdisk -l確認當前有沒有32g SD卡這個設備，就直接使用dd了哦... 補充一下..我的16g SD卡是系統碟 XDDD 剛剛查到了這篇.. http://www.williamsang.com/archives/1764.html 我的/dev/sda設備並沒有分割區..所以我並沒有卸載.. 現在再dd一次..再上來回報結果!! sudo dd bs=1M if=/dev/mmcblk0 of=/dev/sda ※ 編輯: BIAO 來自: 140.124.42.70 (01/09 15:07) 剛才使用dd指令，加上 bs=1M後，已可順利複製，不過32g SD卡無法像16g SD卡一樣可以開機，請問有板友可協助解決嗎!? ------------------------------------------------ ubuntu@localhost:~$ sudo fdisk -l [sudo] password for ubuntu: Disk /dev/mmcblk0: 16.1 GB, 16138633216 bytes 128 heads, 32 sectors/track, 7695 cylinders, total 31520768 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Device Boot Start End Blocks Id System /dev/mmcblk0p1 * 32 147455 73712 c W95 FAT32 (LBA) /dev/mmcblk0p2 147456 31520767 15686656 83 Linux Disk /dev/sda: 31.9 GB, 31914983424 bytes 64 heads, 32 sectors/track, 30436 cylinders, total 62333952 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x39e25831 Disk /dev/sda doesn't contain a valid partition table ubuntu@localhost:~$ sudo dd bs=1M if=/dev/mmcblk0 of=/dev/sda 15391+0 records in 15391+0 records out 16138633216 bytes (16 GB) copied, 2858.22 s, 5.6 MB/s ubuntu@localhost:~$ -------------------------------------------------------- 以上為操作過程及內容.. 謝謝大家^^ ※ 編輯: BIAO 來自: 140.124.42.70 (01/09 16:52) ※ 編輯: BIAO 來自: 140.124.42.70 (01/09 16:56)

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BIAO

01/09 17:22, , 4^F

01/09 17:22, 4^F

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BIAO

01/09 17:22, , 5^F

01/09 17:22, 5^F

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BIAO

01/09 17:22, , 6^F

01/09 17:22, 6^F

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yvb

01/09 17:32, , 7^F

01/09 17:32, 7^F

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BIAO

01/09 17:36, , 8^F

01/09 17:36, 8^F

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BIAO

01/09 17:37, , 9^F

01/09 17:37, 9^F

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yvb

01/09 18:05, , 10^F

01/09 18:05, 10^F

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BIAO

01/09 19:05, , 11^F

01/09 19:05, 11^F

問題已經解決了，試了多次dd後，終於..複製好系統了 ^^ (先前不曉得是怎麼回事就是了...) 我愛dd，dd好用~~~ ※ 編輯: BIAO 來自: 140.124.42.70 (01/09 19:07)

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yvb

01/09 19:57, , 12^F

01/09 19:57, 12^F

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jimmytzeng

01/09 20:14, , 13^F

01/09 20:14, 13^F

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jimmytzeng

01/09 20:14, , 14^F

01/09 20:14, 14^F

回y大:開的起來喔..32g SD卡插進讀卡機時是/dev/sda，插進系統插槽時，變成/dev/mmcblk0喔，目前用ssh遠端測試，還有samba都ok! 謝謝j大:我沒有格式化耶，直接就dd了.. 據鳥哥的書是說會直接複製磁碟分割表 XD ※ 編輯: BIAO 來自: 140.124.42.70 (01/09 20:28)

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yvb

01/10 01:01, , 15^F

01/10 01:01, 15^F

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yvb

01/10 01:02, , 16^F

01/10 01:02, 16^F

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yvb

01/10 01:02, , 17^F

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