How to Install Windows 7 using just a USB Drive
This one I have tried on my brother-in-law's netbook that, today, is a Windows 7 happy user and he doesn't own a DVD drive.
Hands at work:
You need to have an USB drive that fits Windows 7 (aprox. 2,5GB);
Have your USB drive connected and properly detected with a drive letter, access Command Prompt (cmd) and run DISKPART;
At DISKPART prompt, run LIST DISK to identify your USB drive;
Write down the number DISKPART gave to your USB drive. Run SELECT DISK n (where n is the drive number);
From now, all command refers to the USB drive. Run CLEAN to eliminate any partition and volume info;
Create a new primary partition running CREATE PARTITION PRIMARY and activate it with the ACTIVE command. Now BIOS will recognize your USB drive as bootable;
Format your partition with FORMAT FS=FAT32 QUICK or FORMAT FS=NTFS QUICK;
Once formatted, run ASSIGN to give a letter to your USB drive;
Finally, copy all content from Windows 7 DVD to the USB drive and restart your computer. Try to boot from USB (each BIOS has its way to do it) and follow Windows 7 Setup normally, as if it was from DVD and believe me: it will be a little slower but much faster that other Windows versions (XP, 2000, etc).
Command Prompt (cmd)
SELECT DISK n (n = USB drive number)
CREATE PARTITION PRIMARY
FORMAT FS=FAT32 QUICK or FORMAT FS=NTFS QUICK
Copy DVD to USB drive
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