Comment 1 for bug 221684

Just FYI: even if you have 2 windows installations they are not able to see files encrypted under other system. EFS-encrypted data has much higher risk of being lost due to key stored in windows registry. Reading EFS would involve scanning for windows installations and reading their registries until corresponding key is found. Also EFS probably contains a backdoor to allow FBI (and potentially anyone when their key is leaked) to decrypt everyones data.