Monday, November 24, 2014

How To Backup BootSector/MBR for Windows Boot

Backup the BootSector/MBR

Some guides show only taking the first 512 bytes (MBR), others show the
first 63 blocks (MBR + Bootloader).

# dd if=/dev/sda of=/mnt/storage/sda.mbr bs=512 count=1
# dd if=/dev/sda of=/mnt/storage/sda.vbr bs=512 count=63

Friday, November 21, 2014

how to delete samba session on windows

control keymgr.dll

พอลบ user แล้วก็ใช้คำสั่ง net use ดูว่าเราค้างอยู่ในแชร์ไหนของ samba ก็ delete ออก
อย่างเมื่องเช้าค้างอยู่ใน folder share ก็ใช้ net use \\samba\share /delete

Sunday, November 16, 2014

how to permanently set max_user_watches of inotify in debian

add the following lines:

> fs.inotify.max_user_watches=200000

into this file: /etc/sysctl.d/local.conf

Saturday, November 15, 2014

how to get serial number of harddisk on dell server

Dell server uses PERC controller so...

smartctl -a -d megaraid,$a /dev/sda

$a is 0, 1, 2 and 3 for disk #0, #1, #2 and #3, expectively

Sunday, November 9, 2014


useful rsync command line

rsync -avz --delete --append src/ dst