How can we use Linux from a small storage pen drive? Does it work on micro-controllers also? -

i hear linux os can downloaded on flash, pen drive (floppy disk?) etc. how can that?

i have rhel 5.4 source code - how can download pen drive , how space required?

what other functionality can add apart os - when boot storage device can make use of them?

can download linux os micro-controllers also?

i hear linux os can downloaded on flash, pen drive (floppy disk?) etc. how > can that?

if can't work on own, can buy ready made linux on usb drive site http://www.osdisc.com or http://www.cheapbytes.com

not pcs, older pcs, can boot usb drive. newer pcs beginning ship security features can interfere booting code. when work, have find out proper way boot usb drive. might have few seconds during reboot enter right key, or boot windows (if windows installed). key bios boot menu might delete or escape or f10 or other key (varies pc motherboard manufacturer). message on screen flashes rather might mention keys can press. boot specific device or changing boot order can found in bios setup.

there linux utility called unetbootin create usb drive boot linux. not create usb boot drive source code distribution, rather iso file representing live cd or live cd itself.

since large usb drives (e.g. 32gb) relatively inexpensive, if want compare systems or have multiple systems there way have multiple linux , other operating systems on 1 usb drive , able choose boot into. see, instance, http://www.pendrivelinux.com/ has wide variety of procedures making bootable usb using either windows or linux set usb , booting variety of systems.

i have rhel 5.4 source code - how can download pen drive , how space required?

rhel 5.4 bit old. need live cd, if there one.

the iso file can take 600+mb. want space left on use system. 2gb pen drive ok. can less.

what other functionality can add apart os - when boot storage device can make use of them?

upon boot operating system recognize sound cards, other usb devices, hard drives, etc. need know how use these things within linux, , how enable them if not configured. linux distributions have place put packages autoinstalled when usb pen drive based system initializes. in way can "install" software distribution archives not included on standard live system, if don't have internet access.

can download linux os micro-controllers also?

people run on raspberry pi , such, versions of linux on non-pc hardware has low memory quite tiny compared desktop version. can tiny enough challenging work or expand.