内核版本：3.4.91
OS：WindRiver IDP-XT 2.0.4.29
CPU：Intel Quark
您好，
该设备在我身边很好用。但是，当我将它发送给我在不同国家的朋友时，系统无法启动，并且出现了一些奇怪的消息。
mmcblk0: error -84 transferring data, sector 675376, nr 8, cmd response 0x900, card status 0xb00
mmcblk0: retrying using single block read
EXT3-fs (mmcblk0p2): warning: mounting fs with errors, running e2fsck is recommended
EXT3-fs (mmcblk0p2): using internal journal
mmcblk0: error -84 transferring data, sector 1575944, nr 8, cmd response 0x900, card status 0xb00
mmcblk0: retrying using single block read
mmcblk0: error -84 transferring data, sector 2774816, nr 160, cmd response 0x900, card status 0xb00
mmcblk0: retrying using single block read
mmcblk0: error -84 transferring data, sector 2774837, nr 139, cmd response 0x900, card status 0x0
end_request: I/O error, dev mmcblk0, sector 2774837
mmcblk0: error -110 sending status command, retrying
mmcblk0: timed out sending r/w cmd command, card status 0x800900
mmcblk0: error -110 sending stop command, original cmd response 0x900, card status 0x40800b00
mmcblk0: error -84 transferring data, sector 2363904, nr 16, cmd response 0x900, card status 0xc00
end_request: I/O error, dev mmcblk0, sector 2363905
end_request: I/O error, dev mmcblk0, sector 2363912
Aborting journal on device mmcblk0p2.
EXT3-fs (mmcblk0p2): error: ext3_journal_start_sb: Detected aborted journal
EXT3-fs (mmcblk0p2): error: remounting filesystem read-only
症状：整个系统变为“只读”。
显然SD卡有问题。 但是，这不会发生在这里。 我不知道调试的起点在哪里，因为我给他发了另一张SD卡而故事没有改变。
电压是否可能是此问题的根本原因？ （电源？）
请告知。