Last night, I have downloaded another EeePC Linux 1.6 iso (English version for 701) to try out and as usual I need to first create an Asus EeePC System Recovery USB disk. For me, this procedure is very simple but I don't know why many people have problem doing this. So I take this opportunity to generate some screenshots of the steps to serve as a guidance for others.
Download alternative recovery disk for Asus. Our recovery and repair disk. It’s an ISO download image ready to be burned directly to a CD, DVD or a USB flash drive.
My EeePC 4G come with 1 no. Support DVD which contains the P701L.gz Linux system image, winxp drivers, user manual and some utilities. Just put this DVD into the DVDROM of your Windows XP desktop and the tool AsSetup.exe will autorun. [NB. If your Windows have been set to disallow CD autorun, you can navigate into the folder Bin and double-click to run it]
From the 2nd tab on the left, you can find the 'ASUS Linux USB Flash Utility', with which you can make a USB bootable disk with the Linux system image for EeePC system recovery.
Please note that some EeePC come with 2 DVDs: the Support DVD (with the winxp drivers, manuals and tools), and the Linux Recovery DVD (with the Linux system image). The 'ASUS Linux USB Flash Utility' is in the 1st DVD while the Linux system image is in the 2nd DVD. So you may need to swap DVDs during the process to create the Asus EeePC System Recovery USB disk.
If you don't have an original Linux Recovery DVD (e.g. if you have bought the winxp version), there are quite a no of places you can download the iso of this disk. Here are some links I know of:
Asus Recovery Dis Iso Download Torrent
http://downloads.k0k0.de/index.php?dir=EeePC%2F
http://www.eeepc-logiciels.com/downloads/xandrosFR16http://www.asustreiber.de/downloads/eeepc/618-images
Asus Recovery Dis Iso Download Software
EeePC 701 ISO on SourceForge.net
In this case, you will also need to download the 'ASUS Linux USB Flash Utility' (BootTool.rar) which will help you format and configure a detected USB flash stick to boot, then copy the Linux system image to it.
After you have decompressed the package, you will find a folder BootTool. Click on any of the .exe files, and you will end up with the same FreeOSTool.exe window.The screenshots below show the steps how this is run:
If BootTool can detect an USB flash drive, then it should directly arrive at the next screenshot:
Select the 1st line and click on [Run]. You will arrive at a 'Confirm Dialog'.
Click on [Yes] to continue, and the progress bar will show up.
After formatting is completed, the utility will ask you to unplug and re-plug the USB flash disk, then click on [Retry].
There it will proceed to copy the Linux system image files to the USB flash disk.
Success!
In the end, you should have the System Recovery USB disk with volume label 'EEEPC' (or 'EEEPC-701' depending on your model), and some folders and files like this in the disk:
Out of these files, P701L.gz is the Linux system image. It is less than 1GB for 701 and those models with a 4GB 1st SSD. But for those models with a harddisk, e.g. 1000H, it will be as big as 1.5 GB. So for those SSD models, theoretically 1GB should be enough for the System Recovery Disk. This is also what I use to use. But some people have reported problem with 1GB USB flash disks, and now even Asus recommends 2GB flash disk.
Another file of interest is the file /boot/initrd.gz. This is the initial RAM disk image. After the Linux kernel (vmlinuz) is loaded by the grub bootloader, grub will look for, unpack and load this initrd.gz according to the default entry (or the entries you select) in the grub boot menu config file (/boot/grub/menu.lst). This is where the actual bootscript is.
In all those of my hacks: Boot Xandros from USB for Dummies and Restore EeePC with unionfs, what I am doing is just to replace the original bootscript here with a custom bootscript (that loads required kernel modules, seeks the USB flash disk by volume label, mount it in /xan and run another script) and another script that performs all the operations as required.
Some other files, in particular blockcount.dat and user_start.dat, are also vital to the restore process. So check and verify if all the files are here. If you run into problem, you may want to check this wiki: Howto: USB Restore.
Asus Recovery Download
If you don't have a Windows XP desktop, you can still do this in Linux. I won't cover it here. Check these wiki:
http://wiki.eeeuser.com/howto:usbrestore#in_linux
HOWTO Make a Standard USB Image under Linux
Now you are ready to restore your EeePC. Plug the System Recovery USB disk into your EeePC, power it up and press [ESC] as soon as you see the Asus BIOS splash screen, then select the USB flash disk as 1st boot device at the BIOS screen similiar to this.
Asus Support Recovery Disk
Here is a picture of the screen display during the restore process. You will be prompted to enter 'yes' in the middle of the process.
The restore process takes about 5 minutes if you have a fast enough USB flash disk. On some old USB devices, e.g. multi-card reader + mini-SD card, it may take longer. The longest I have experienced is 40 minutes!