Not really Microsofts fault but difficult to check for and explain that some disks that are already broken start to die or refuse to work after an Upgrade that

Not really Microsofts fault but difficult to check for and explain that some disks that are already broken start to die or refuse to work after an Upgrade that rewrites big parts of the disks. Bad sectors are getting remapped when beeing written to and likely writing 10-15gb on these disks caused the disk to reach it's reserved sectors and just giving up - or the new writes couldn't be read anymore after booting. However for someone that has no knowledge about computers and just uses them this issues might make them angry at Windows 10.