Eee PC in the primary question - the file system
October 31, 2007 - 11:10 am 1. AMI BIOS
2. Startup screen (Grub bar)
3. Load (read-only) / dev/sda1 for the / file system, the implementation of / sbin / fastinit
4. Unionfs the use of load (write) / dev/sda2 for the / file system overlay *
5. Fastinit beginning will be recorded in the hardware drivers (LAN, wifi, etc.)
6. Run startx, startx will icewm and the implementation of ASUS own GUI - AsusLauncher
7. Boot, about 16 seconds
* The overlay
For a long time before the Linux Live CD are read-only system, many programs that do not like the restrictions on the environment,
And only about 650M place to the file, not enough.
Later, there have been compressed file system - squashfs, much of the compression ratio to solve the space problem,
But only read-only.
Finally, there is a solution to the best of both worlds - squashfs add unionfs, unionfs
The practice is the two partitions or file system stack (stack) together, there is no write / delete actions have done in the last stack up the file system, the Live CD can be used squashfs
Bottom do then do memory RAM Disk put above to simulate a "normal" to the file system
Live with the operating system.
In the Eee PC, Asus has made use of this principle can also end the alternative is for the system's default on sda1, loaded into a read-only (like the Live CD), and then stacked up into sda2 Write, no matter how users of the system to play dead, sda1 also like the original, only to restore the so-called re-format sda2 on the line.
The design is really smart and ASUS!
3 Responses to "Eee PC in the primary question - the file system"
A further advantage of this is to save hard disk space. NB generally do not like the practice of raw Patition also in a system, take out the initial system with the same room.
Of course, this is the hard disk only 4 - 8GB in the EeePC is all the more important.
By Gator Liu on Nov 2, 2007
Hello, I have now encountered a problem. As I have repeatedly uninstall software to install, small e disk space has been covered, and how to release ah? Who can tell me, I am very grateful!
By sbabybird on Jul 17, 2008