e2recover
# dev=/dev/hda2 # or whatever
# echo lsdel | debugfs $dev > lsdel.out
# e2recover --guess-indirects --device=$dev lsdel.out

hddtemp,gkrellm-hddtemp	Hard disk temperature
http://www.tldp.org/LDP/LGNET/current/TWDT.html#chirico
======================================	Virtual Disk
modprobe loop
modprobe cryptoloop
modprobe aes
dd if=/dev/urandom of=disk-aes count=102400
losetup -e aes /dev/loop1 ./disk-aes
Password:
mkfs -t reiserfs /dev/loop1
mkdir /fs
mount -o loop,encryption=aes,acl ./disk-aes /fs
Password:
======================================
dd if=/dev/zero of=disk.img count=100M
/sbin/mkfs -t ext3 -q disk.img

mkdir fs
mount -o loop=/dev/loop0 disk.img fs
======================================	drive parameters
-------------	drive info
hdparm -g /dev/hda
hdparm -i /dev/hdb
hdparm -I /dev/sdb
-------------	speed
hdparm -tT /dev/hda