/

The / directory is the root of the pathname space. Usually your primary hard disk or flash filesystem is mounted here.

On a QNX 4 filesystem, this directory includes the following files:

/.altboot

Contains an alternate OS image that's loaded if you press ESC during bootup and you're using the QNX 4 filesystem; see Controlling How Neutrino Starts.

/.bitmap

A system file that contains a bitmap representing the disk regions in use by the filesystem. Each block is represented by one bit; if the bit is set, the filesystem is using the block.

You must preserve the integrity of this file to prevent disk corruption. After an unexpected shutdown, run chkfsys to walk through the entire filesystem and validate this file's contents, correcting them if necessary. For more information, see "QNX 4 filesystem" in Working with Filesystems, and chkfsys in the Utilities Reference.

/.boot

This item depends on the filesystem you're using:

• On a bootable Power-Safe (fs-qnx6.so) filesystem, it's a directory that contains the OS images that the secondary boot loader can load on bootup.
• On a bootable QNX 4 (fs-qnx4.so) filesystem, it's a file that contains the primary OS image.

For more information, see Controlling How Neutrino Starts, as well as "QNX Neutrino and QNX 4 bootloader partitions" in the Neutrino Technical Notes.

/.diskroot

A file that indicates which QNX 4 filesystem to mount as /. For more information, see Controlling How Neutrino Starts.

/.inodes

Contains additional data pointing to extra inode blocks required by files that device). For more information, see "QNX 4 filesystem" in Working with Filesystems.

The / directory also contains platform-specific directories (e.g., armle, ppcbe, x86), as well as the directories described in the sections that follow.