This page shows how I installed Linux on a Medion Akoya E1210 Netbook using a USB memory stick. Since the E1210 is a clone of the MSI Wind U100, this howto might work with it too.
The way outlined at Debian GNU/Linux Installation Guide didn't work for me.
Disclaimer: use this HOWTO at your own risk :-)
The Netbook comes with recovery media and if you have a USB-CD/DVD drive or just don't care, you may skip backup and proceed with installing Linux. But if you have a USB-CD/DVD drive, you probably don't need this HOWTO.
For the backup, I used System Rescue CD, because it includes ntfsprogs and I'm familiar with it.
Download an image from Debian -- Network install from a minimal CD. I use this businesscard image debian-40r3-i386-businesscard.iso, but any netinst image should work as well.
# mke2fs /dev/sdX1
Change /dev/sdX1 to whatever your memory stick device is. On my system
/dev/sda is my hard disk and /dev/sdb is my memory stick.
# mkdir /mnt/usbstick
# mount /dev/sdX1 /mnt/usbstick
# mkdir /mnt/isoimage
# mount -o loop,ro /path/to/debian-40r3-i386-businesscard.iso /mnt/isoimage
# cp -a /mnt/isoimage/* /mnt/usbstick
# cp -a /mnt/isoimage/.disk /mnt/usbstick
# extlinux -i /mnt/usbstick/
# sed -e 's![a-z][a-z0-9]*\.txt!/isolinux/&!' /mnt/usbstick/isolinux/isolinux.cfg >/mnt/usbstick/extlinux.conf
# umount /mnt/usbstick
Boot->Boot Option #1->USB HardDisk->F10->yes
<return>.
Alt-F2
and return for a root prompt. At the root
prompt enter
# mount -o ro /dev/sdc1 /cdrom
(/dev/sda is the hard disk and /dev/sdb is the memory
slot) and return to the main menu Alt-F1.
Press return to continue the installation.
# umount /mnt/isoimage
# rmdir /mnt/isoimage
# rmdir /mnt/usbstick