rAM диск инициализирован загрузчиком (boot loader initialized RAM disk)
Примечание (Note)
1. With the current kernel, any filesystems that remain mounted
when /dev/ram0 is moved from / to /initrd continue to be
accessible. However, the /proc/mounts entries are not
updated.
2. With the current kernel, if directory /initrd does not exist,
then /dev/ram0 will not be fully unmounted if /dev/ram0 is
used by any process or has any filesystem mounted on it. If
/dev/ram0 is not fully unmounted, then /dev/ram0 will remain
in memory.
3. Users of /dev/initrd should not depend on the behavior given
in the above notes. The behavior may change in future
versions of the Linux kernel.
