Since a year I have been installing Linux using USB. So far never felt like creating image for later use as usb creation using Unetbootin & Fedora LiveUsb creator is very easy and hardly takes time. My colleague is been using Komku-SP-usb.exe for WinXP installation. Creating XP USB installer takes time & requires intervention, one might feel to keep image ready for later use.
This is where USB image tool works, it takes backup of entire usb disk which can be restored. The only downside is it creates image for the size of usb drive, meaning if you are using 4Gb drive and have utilized only 1Gb, this tool will create image of 4Gb. Which is fine, we can use smaller drives while creating images.
Note: I have not tested restoring same image on diff make / size usb, but it should work.
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