SQUASHFS error

when i do flashcp operation, and there are some errors happen asbelow:

 SQUASHFS error: xz_dec_run error, data probably corrupt
SQUASHFS error: squashfs_read_data failed to read block 0x1feda
SQUASHFS error: Unable to read data cache entry [1feda]
SQUASHFS error: Unable to read page, block 1feda, size 7b80
SQUASHFS error: Unable to read data cache entry [1feda]
SQUASHFS error: Unable to read page, block 1feda, size 7b80
SQUASHFS error: Unable to read data cache entry [1feda]
SQUASHFS error: Unable to read page, block 1feda, size 7b80
SQUASHFS error: Unable to read data cache entry [1feda]
SQUASHFS error: Unable to read page, block 1feda, size 7b80
SQUASHFS error: Unable to read data cache entry [1feda]
SQUASHFS error: Unable to read page, block 1feda, size 7b80
SQUASHFS error: xz_dec_run error, data probably corrupt
SQUASHFS error: squashfs_read_data failed to read block 0xf292e
SQUASHFS error: Unable to read data cache entry [f292e]
SQUASHFS error: Unable to read page, block f292e, size 8bf8
SQUASHFS error: xz_dec_run error, data probably corrupt
SQUASHFS error: squashfs_read_data failed to read block 0xcf982

 

surf from the net, get below:

these errors can be due to a variety of reasons:
bad media (solution try burning the iso image to a new disc)
a bad dvd drive(solution if possible , try usring a different cd/dvd drive)
bad memory modules(solution use tool to check your memory)
a corrupted iso image(solution run an md5 checksum, and if they don't match ,download the image again)

the Linux MTD layer doesn't do any maintenance on the NAND/NOR memory.
For example, when a bitflip happens on your NAND, it's corrected by the ECC. The MTD layer is aware of that, but it doesn't DO anything about it. It just returns the error.

you can refer the link:

http://stackoverflow.com/questions/20551600/squashfs-error-unable-to-read-page-size

and

https://help.ubuntu.com/community/SquashfsErrors

for more info

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