Because normal read operation on a disk presenting error (physivcal or logical) may cause data corruption, destruction and even writing to recover bad blocks.

You have to keep in mind that even the read operation may lead to physical damage or data modification.

Because normal read operation on a disk presenting error (physical or logical) may cause data corruption, destruction and even writing to recover bad blocks.

You have to keep in mind that even the read operation may lead to physical damage or data modification.

Because normal read operation on a disk presenting error may cause data corruption, destruction and even writing to recover bad blocks.

You have to keep in mind that even the read operation may lead to physical damage.

Because normal read operation on a disk presenting error (physivcal or logical) may cause data corruption, destruction and even writing to recover bad blocks.

You have to keep in mind that even the read operation may lead to physical damage or data modification.