michael watterson uvtjseircomnet gavin mccullagh wrote hi fri 26 oct 2007 gavin mccullagh wrote said always fixable ive never actually reinstalled however suggesting ordinary user could unrealistic rereading sounds awful meant nontechnical user comparison macs windows nontechnical users os upgrades reasonable safety expert technical users backup data settings clean install inc reinstall apps restore data settings true tested win30 31 311 311wfwg nt35 nt351 nt40 win2k xp win 95a b win98 win98se never tested upgrade vista wiped replaced win98se nt40 depending hw wiped good vista xp always something messes official ms upgrades many later os cant installed upgrades anyway mac os9 os10 upgrades two machines simply resulted dual boot os9osx nt40 os2 results dual boot nt able read os2 fs ntfs nt ver 3 ms os2 anyway cromenco cromix z80 unix 68k unix progressive upgrade dual cpu box version upgrade dr multidos successful upgrades remember even dos 33 dos622 fraught better delete mbr dos files mike thu 07 aug 2008 044108 0100 ubuntu upgrades ilug linux pcs tesco