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Old 06-19-2009, 01:21 AM   #1
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Unhappy Difference between Readonly Filesystem and Mounting filesystem as readonly

Hello ,

I had CF card ..on which I had Linux Debian 4.0 which runs as
Linux kernel in RAM(ofcourse) with rootfilesystem on RAM ext3 partation on CF card with contains kernel image and rootfilesystem image.other partation is also ext3 type.with home and usr directory...

I mount first partation as readonly ...and other read write..

I would like to know what is difference between
Mounting a filesystem (ext3,ext2) read-write filesystem as Read only
And mounting a readonly type filesystem (cromfs,cramfs) ....

I want to protect my CF card..
Old 06-19-2009, 01:26 AM   #2
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There won't be any write commands for the mounted filesystem itself. One may be able to write to the raw device however, e.g. /dev/mmcblk0.
The mount command won't accept the the rw mount option if you are mounting it with a read only filesystem.


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