I need easily updatable troubleshooting LiveUSB distro. By troubleshooting I mean that it should not have nothing fancy (X is used o display gparted etc.) but should have access to file archivers/undeleting etc. tools.
Unfortunately most LiveUSB distros are modified LiveCD ones so they assume sequential and slow base device (as opposed to USB flash disk which is fast compared to CD, have 0 latency and have much number of writes to it). The only method of updating is overwriting the previous content.
I'd like to have 'easy' package manager on distro to allow installing tools I need and from time to time an update which would not destroy any customisation. On the other hand I still would like to have autodetection scripts etc.