On 2013.08.03 22:58, useris wrote:
> Idomu man labiau teoriskai, kaip gali dingti visas folderis ir is kur tie
> kiti senesni failai ten atsirecoverino.

Flash based media does two basic operations and there are several design 
concerns that put data at risk in the event of a power failure. Flash 
based devices typically write data in two 16KB pages simultaneously. In 
other words flash devices write data in 32KB chunks. If a 40KB file is 
written to the flash device, the flash controller needs to decide what 
to do with the extra 8KB of data. If the controller writes data to the 
flash immediately, this will waste 28KB of flash capacity, which when 
multiplied over thousands of writes would be very inefficient.

In order to address this most flash devices will hold this data in a 
small volatile buffer until the proper condition occurs that forces a 
RAM flush. It is this data that’s at risk and even though only a small 
amount, losing it can lead to complete data loss.