The device comes with an internal 2.5" IDE PATA Hard Disk.
It is Usually an Hitachi Endurastar J4K30 or a Toshiba MK3029GAC with 30Gb Capacity.
The disk is divided in 4 Logical Partitions :
APPLI
Type - FAT (FAT16)
Size - 2.101.572.608=2004MB
Free - Approx 1.584MB
Active partition
This partition holds the Application Software and the TTS (Text-To-Speech) Databases
NAV
Type - FAT32 (LBA)
Size - 12.001.810.432=11445MB or 114446MB
Free - Approx 9.187MB
This partition holds the maps Database
Type - FAT (FAT16)
Size - 1.200.179.200=1144MB or 1145MB
Free - Approx 1.191MB
This partition holds the user data such as:
- General device configuration
- PhoneBook
- User POI's
- …
It also stores Logging data
JBX
Type - FAT32 (LBA)
Size - 14.702.213.120=14021MB or 14026MB
Free - Depends on the quantity of MP3's.
This partition holds the Jukebox Files (MP3 Audio and Playlists)
Hard Drive Restore
Please bear in mind that it is important to be able to properly restore the backups you made.
Hard Drive Backup
Suggestion: Copy the files as they are accessible from the disk and use an imaging tool to make a full backup of your disk.
A customized script to copy the entire contents of a partition to USB Flash disk is being tested.
It is posible to backup and restore the HDD simply copying all the files in each partition. Also you can erase an recreate the partitions winth the same size and type. I have tested it using fdisk on linux, and setting manually the start an end blocks of each partition, so the size would be exactly the same.
I don't know if Master Boot Record is used, i think it isn't.
Hard Drive Replacement
If you restore the partitions to a different hard drive, the system should be able to accept it without problems.
(not tested yet)
Just don't expect the same reliability from a 'regular' laptop hard drive.
I have tested a 160 Gb HDD, with all the partitions exactly equal but the Juke Box one. It was resized to 32 Gb (max in FAT32). The RT4 didn't boot. Maybe with a smaller disk…
To use another hard-drive than the original one in the RT4, you have to :
- save the MBR of the original hard-drive
- format the new one with the same partitionning as the original one
- put in the new disk the saved MBR (with for example the latest version of mbrtool : DIY DataRecovery)
Do not forget a Windows MBR for an Intel processor is not very useful for a VxWorks system with a PowerPC processor. I did it with a 80Gb Wersten Digital 2" 1/2 hdd and it works.
Could you use a more than 32 Gb FAT32 partition for jukebox?
