Problems and solutions of U-Disk read-only in FAT32 format under Linux

Source: Internet
Author: User

Here are the solutions you see online:http://blog.csdn.net/heqiuya/article/details/7870554

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  1. In fact, it is a power-down protection, the SD card before it becomes a system file, just need to re-mount the SD cards again OK.
  2. Fat:filesystem Panic (Dev mmcblk0p4)
  3. Fat_free_clusters:deleting FAT Entry Beyond EOF
  4. File system has been set read-only
  5. JFFS2 Notice: (410) Check_node_data:wrong data CRC in data node at 0x0a6537b8:read 0x989975b, calculated 0x9b01bd19.
  6. You can use Mount to view
  7. /DEV/MMCBLK0P4 on/mnt/sd type VFAT (ro,relatime,fmask=0000,dmask=0000,allow_utime=0022,codepage=cp437,iocharset= cp936)
  8. /DEV/MMCBLK0P4 on/home/sd type VFAT (ro,relatime,fmask=0000,dmask=0000,allow_utime=0022,codepage=cp437,iocharset= cp936)
  9. Add a sentence to the/etc/init.d/rcs
  10. Mount-o REMOUNT,RW/DEV/MMCBLK0P4

Another way of saying online, change FAT32 format to ext2 file system format:

I tried to solve my problem with the method above, but I had a problem.

I am using the DMESG command to view the U disk error message,

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    1. Fat:filesystem Panic (Dev sda1)
    2. Fat_free_clusters:deleting FAT Entry Beyond EOF
    3. File system has been set read-only

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    1. Use the Mount command to print out the mounted format as RO is read-only mode.
    2. Add the Remount parameter to the Mount command and modify the/etc/fstab file to mount successfully.
    3. Mount-o REMOUNT,RW/MNT/SD
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    1. There is no way to use the second way, format u disk for ext2 format.
    2. First confirm whether the kernel supports ext2 file system, my kernel is 2.6.24, the default does not support ext2, so I added ext2 support in the Kernel menu item, take static mode, update the kernel after compiling.
    3. Then format the U-disk
    4. #mkfs. ext2/dev/sda1
    5. The current test situation is normal.



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Problems and solutions of U-Disk read-only in FAT32 format under Linux

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