(Copied from andoid stackexchange)
Many people install Linux-based distros on USB drives to use for, largely, basic PC troubleshooting. Has anyone tried installing such a thing on their Android phone's SD card? That way instead of carrying about both a USB drive and a phone, one could simply plug their phone in, boot the PC from USB, and set about performing whatever actions are necessary. Does anyone have any recommendations for particular flavors of Linux which are best suited to this task?