> Hi,
>
> I have two questions regarding the read-only file system in Linux.
>
> 1) Where can I get any documents which explain the read-only file system for
> Linux?
> 2) Is it possible to switch between the modes (i.e. change the file system
> to read/write, install an application and get back to the read only mode
> without rebooting).
I see others have answered yoru question adequately.
However you CAN go a stage further in making a whole drive ro: man hdparm for
details.
and you can mount filesystems to apply other limitations:
nodev Can't make/use devices on this filesystems
nosuid Can;t run setuid programs from this filesystem
noexec Can't run programs at all from this filesystem
Here's ho I mount my CD with autofs:
cd -fstype=iso9660,ro,noexec,nodev,nosuid :/dev/hdd
It's a good antivirus/antitrojan measure, especially now that "autorun" has
come to Linux.
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