Contec CONPROSYS Linux SDK, User Manual

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Starting CONPROSYS
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CONPROSYS Linux SDK User’s Manual (Self -Build Edition)
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3. About File System
To prevent the system from crashing, the root file system (SD card) of CONPROSYS Linux SDK starts
up in Read Only mode. By assenting with the software license agreement to log in, you are permitted
to write into root file system. Once logging out, the system returns to Read Only mode. (Directory
on ramdisk such as /tmp is writable without logging in).
See the followings to write a file into SD card when you are not logged in.
Change two files where Read Only is set.
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Edit /etc/fstab file of rootfs partition.
Before change:
rootfs / rootfs ro,noatime 0 0
After change:
rootfs / rootfs rw,noatime 0 0
Other than rootfs ext4 partition, create a new partition by fdisk and
mount it to write a file.
See “ Create a new partition in the blank area of the memory. (page 37) ” in “ Expand the size of
the SD card memory. (page 37) ” .