Acronis Disk Director 12 - User Guide - Manual (Page 42)

42 Copyright © Acronis International GmbH, 2002-2014
Unhiding a hidden a volume means changing the volume type so that it will be visible by the
operating system. You may want to unhide a volume in order to:

Make a previously hidden volume again visible to the operating system.

Access data and make changes to files stored on a hidden OEM volume.
If you have Acronis OS Selector installed on your computer, you need to mark a volume you want to unhide as
unhidden in Acronis OS Selector also.
To unhide a volume
1. Right-click the hidden volume you need to unhide, and then click Unhide volume. The program
automatically assigns the first vacant drive letter to this volume.
2. Click OK to add the pending volume unhiding operation.
The results of the pending operation are immediately displayed as if the operation had been
performed.
To perform the pending operation you will have to commit it (p. 22). Exiting the program without
committing the pending operations will effectively cancel them.
5.25 Specifying i-node density
This operation applies to volumes whose file systems are Ext2 or Ext3.
The i-node is the main data structure for Linux Ext2/Ext3. All of a files information, with the
exception of its actual name and data, is stored in the i-node. Each file has its own i-node. Each
i-node contains a file description, including number, file type, size, data block pointers, etc. Space for
i-nodes is allocated when you install the operating system or when a new file system is created. The
maximum number of i-nodes, and hence the maximum number of files, is set at file system creation.
Running out of i-nodes prohibits the creation of additional files and directories on the volume even if
there is sufficient disk space. I-nodes themselves consume disk space, so specifying the i-node
density lets you organize disk space in the optimal way. I-node density is determined by specifying
the number of bytes per i-node. Usually, the default value is 4096 bytes per i-node.
Important: If you change the i-node density of a boot volume the operating system will become unbootable. To
restore the system bootability use a boot loader.
To specify i-node density
1. Right-click the Ext2/Ext3 volume, and then click Change i-node density.
2. In Bytes per i-node, specify the required value.

Use lower i-node density (that is, increased Bytes per i-node value) for a volume that
contains just a few large files. This will allocate more space for files and less for i-nodes. The
less i-nodes there are the in the system, the faster the “file system check” operation will be
performed.

Use higher i-node density (that is, reduced Bytes per i-node value) for volumes that contain a
large number of small files. This will allocate more space for i-nodes and less for data. The
more i-nodes there are in the file system, the less likely you will not run of i-nodes. But, the
“file system check” operation will be performed slower.
3. Click OK to add the pending i-node density changing operation.
The results of the pending operation are immediately displayed as if the operation had been
performed.