Ext3 format requirements

Introduction

The HMP200 & HMP130 models can use as permanent storage extension, any external USB storage device having a size up to 2 TB. However, they are only able to format USB storage devices of maximum 500 GB - for larger sizes, the USB storage needs to be formatted on a PC using the ext3 file system - see the format requirements below.

The ext3 is natively supported on Linux, though there are some tools allowing to perform the ext3 format operation under other operating systems, like GNOME Partition Editor, EaseUS Partition Master, Paragon ExtFS Professional etc.

Ext3 format requirements

This instructions apply to HMP200 & HMP130 models only!

To be correctly used for read-write, an ext3 filesystem should be made as follows:

1. Set the maximal mount count to 0.
2. Set the interval between checks to 0.
3. Have a journal (i.e. ext3, not ext2).
4. Have the root directory group writable.
5. Have the root directory have group ID 18.

In addition it is recommended that:

• The reserved block count be set to 1% (default is 5%).
• The lost+found directory is removed.