===== INDEX =====

LaCie disk see [[SATA]]


===== HOW TO ======

Backup :

 sfdisk -d  /dev/sdb -O sfdisk-sdb.txt



===  how to recreate partitions from "/proc/partitions" ===

photorec can help

  * http://prefetch.net/blog/index.php/2009/12/20/using-the-linux-parted-utility-to-re-create-a-lost-partition-table/
  * http://unix.stackexchange.com/questions/35681/accidentally-deleted-the-partitions-on-my-boot-disk-the-system-is-still-running
  * http://www.brzitwa.de/mb/gpart/



=== Partition vs [[FileSystem]]===

  * Important : 1st part must be <= 1023 cyl (+4024M on my USB key)

  * [[DVD]] size 4.7 *10^9 bytes = 4700000000.0 bytes = 4.37721610069274902344 * 16^9 bytes
  * vfat 32 Go, 4 Go max file
  * [[Linux]] System : 5 Go
  * [[WindowS7]] : 5545MB+ to be inst # then 7G
  * [[WindowsXP]] requieres=1371MB
  * [[WindowsXP]] OEM = 1255
  * [[Windows]] 2000Pro installed=950MB

http://linuxfr.org/tips/381.html


==== Howto [[Partition]] a  [[USB]] [[HardDisk]] : Fragmentation /  20 GB and more (250GB here) ====

  * 1 : 1GB : swap or [[Boot]] + LiveCD ... :
  * 2 : 8GB: (can be reused to install [[BSD]] or other [[Windows]])
  * 3 : 8GB: [[Linux]] (ext3)
  * 4 : Extended ( 240 GB )
  ** 5 : data = remaining space ..  : /home 
  ** 6 : swap
  ** opt: 7 / n-m : Other [[OS]] 1  [[Linux]] [[Gentoo]] .. 4GB
  ** opt: 8 / n : swap or CD : 1GB


=== Howto [[Partition]] a  [[USB]] [[HardDisk]]===

  * 1 : 1000 MB  live
  * 2 : Extended
  * 3? : 8 GB  [[Windows]] Eventually
  * 4? : 8 GB  
  ** 5 : remaining data


==== Howto [[Partition]] a  [[USB]] [[HardDisk]] : 20 GB and less ====

  * 1 : 1 GB: [[Boot]] / LiveCD can be reused for [[swap]]
  * 2 : 4 GB : ntfs : [[Windows]]  = 4294967296
  * 3 : 1 GB : [[swap]] or temp or [[LiveCD]]
  * 4 : Extended :
  ** 5 : 6+ GB : vfat : home / data = remaining space ..
  ** 6 : 8  GB : ext3 : [[Linux]] / [[Debian]] : 8GB



===== Recovery =====

  * http://www.cgsecurity.org/wiki/Data_Recovery_Examples#Recovery_of_reformated_partition
  * https://superuser.com/questions/891993/how-to-recover-exfat-partition# ExFat


===== MISC =====

Slow write operation using usbmount (because it uses sync not async) :

  * https://www.redhat.com/archives/fedora-test-list/2005-May/msg01102.html
  * http://bugs.debian.org/298184# [[Community]]
  * http://gparted.sourceforge.net/livecd.php
  * http://www.thelinuxdaily.com/2010/05/sfdisk-the-scriptable-fdisk/# SfDisk
  * http://www.hermann-uwe.de/blog/resizing-ext3-partitions-with-parted
  * https://en.wikipedia.org/wiki/Logical_Disk_Manager
===== MORE =====

@TaG: [[FileSystem]] [[Boot]] [[USB]] [[HardDisk]] [[Drive]] [[Root]] [[Recover]] [[SCSI]] [[SMART]] [[IDE]] [[SATA]]