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datarecovery [2016/08/16 21:13] – created niziakdatarecovery [2025/01/31 10:08] (current) – niziak
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-====== safecopy ====== +====== Data recovery ======
-There are some predefined settings: +
-  * stage1: Preset to rescue most of the data fast,  using  no  retries  and avoiding bad areas. +
-  * stage2: Preset to rescue more data, using no retries but  searching  for exact ends of bad areas. +
-  * stage3: Preset to rescue everything that can be  rescued  using  maximum retries, head realignment tricks and low level access.+
  
-In current working directory, safecopy will create files with badblocks map: stage#.badblocks, which are used in next stages. 
-Typical usage is: 
 <code bash> <code bash>
-safecopy --stage1 /dev/source output.img +hdparm -c0 /dev/sdi 
-safecopy --stage2 /dev/source output.img +hdparm -X1 /dev/sdi 
-safecopy --stage3 /dev/source output.img+hdparm -d0 /dev/sdi 
 +echo 1 > /sys/block/sdi/device/queue_depth
 </code> </code>
  
-===== on usb drives ===== +===== fast erase whole disc ===== 
-Not all USB adapters can handle SATA low level operations.+ 
 +search tags: "secure erase" 
 <code bash> <code bash>
-safecopy --forceopen -L 0 --stage1 /dev/source /dev/destination+sudo hdparm --user-master u --security-set-pass ABC /dev/sdX 
 +sudo hdparm --user-master u --security-erase ABC /dev/sdX 
 + 
 +# check if device security is "not enabled" 
 +hdparm -I /dev/sdX
 </code> </code>
 +
 +
 +====== sata hotplug  ======
 +
 +===== Plug =====
 +
 +<code bash>
 +echo 0 - 0 > /sys/class/scsi_host/host5/scan
 +</code>
 +
 +Rescan all ports:
 +<code>
 +exec tee /sys/class/scsi_host/host*/scan <<<'- - -' >/dev/null
 +</code>
 +===== Unplug =====
 +
 +<code bash>echo 1 > /sys/block/(whatever)/device/delete</code>
 +
 +