|
When using the ATmission Live CD, all modifications issued to
the filesystem on the CD are stored by the
cowloop driver
in a so-called cowfile. By default, this cowfile is located in a
writable filesystem in RAM. This implies that all modifications are lost
as soon as you reboot your system.
With the power and versatility of the cowloop driver,
it is easy to preserve your session data in a cowfile on
a USB memory stick or on a hard disk.
Procedure
Preserving data is very simple. Just follow these steps:
- Create a file, called
saved.cow in the root directory of a
FAT/FAT32/NTFS/ext2/ext3 filesystem (on USB memory stick or hard disk).
- On a Linux system you could use the command
dd
to create a file with a size of e.g. 64 Mbytes:
dd if=/dev/zero of=/saved.cow bs=1M count=64
- On Windows you could take a large file (>32 MB) and copy it
to
c:\saved.cow
Copy the file multiple times to create a larger file.
In the DOS command prompt, type e.g.:
copy a-big-file+another-big-file c:\saved.cow
The ATmission CD-rom contains a script named Setup_Savefile.bat that provides an automated way to create a saved.cow file.
- Alternatively: download one of the saved.cow zip files below and extract the saved.cow file to the root directory of your hard disk or USB stick.
- Make sure the device where the
saved.cow resides
is available when the ATmission Live CD is booted.
- When ATmission boots, it checks if a file called
saved.cow
can be found in the root directory of your harddisk or USB memory
stick.
If such a file is present, it is mounted as an ext2 filesystem.
After finishing these preparations, insert the ATmission CD in your CD-ROM drive and boot from it.
You can specify the name of the cowfile on the boot prompt. When the boot screen with the numbers 1-3 appears, type the number and add cowsave=XXXXX,
where XXXX is the name of your cowsave file. E.g.
1 cowsave=mycow
You cannot specify the device name, so the first file found with that name will be used.
To prevent the boot process to pick up a saved.cow file, add
nocowsave
to the boot prompt.
Downloadable saved.cow zip files
Warning
Be very careful.
If you do have a file called saved.cow and you start
the ATmission CD, this file will be used.
This could result in data loss if the file saved.cow
contains valuable data for other applications.
|