acrs recovery with testdisk page 1

acrs recovery with testdisk page 1
Lost Data & Format Recovery
ACRS
Advanced Computer Repair System
Recover Lost Data and Formatted drives with the ACRS
Boot your system off the ACRS boot disc and make sure you arrive at the main menu.
Go to Hard drive tools >> Data Recovery >> TestDisk
Select Enter to start Testdisk
and then use the Default
setting, once the system has
booted, you will want to select
“Test Disk as shown in the
screenshot to the right >>
Continue on through the
prompts of the program, it will
analyze and recover your
drive, you may need an
external hard drive to copy
data to depending on the state
of your drive.
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Lost Data & Format Recovery
ACRS
Advanced Computer Repair System
Log creation
■ Choose Create to instruct Testdisk to create a log file containing technical information and messages, unless you
have a reason to append data to the log or you execute TestDisk from read only media and must create the log
elsewhere.
■ Choose None if you do not want messages and details of the process to be written into a log file (useful if for
example Testdisk was started from a read-only location).
■ Press Enter to proceed.
Disk selection
All hard drives should be detected and listed with the correct size by TestDisk:
■ Use up/down arrow keys to select your hard drive with the lost partition/s.
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Lost Data & Format Recovery
ACRS
Advanced Computer Repair System
■ Press Enter to Proceed.
If available, use raw device /dev/rdisk* instead of /dev/disk* for faster data transfer.
Partition table type selection
TestDisk displays the partition table types.
■ Select the partition table type - usually the default value is the correct one as TestDisk auto-detects the partition
table type.
■ Press Enter to Proceed.
Current partition table status
TestDisk displays the menus (also see TestDisk Menu Items).
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Lost Data & Format Recovery
ACRS
Advanced Computer Repair System
■ Use the default menu "Analyse" to check your current partition structure and search for lost partitions.
■ Confirm at Analyse with Enter to proceed.
Now, your current partition structure is listed. Examine your current partition structure for missing partitions and
errors.
The first partition is listed twice which points to a corrupted partition or an invalid partition table entry.
Invalid NTFS boot points to a faulty NTFS boot sector, so it's a corrupted filesystem.
Only one logical partition (label Partition 2) is available in the extended partition. One logical partition is missing.
■ Confirm at Quick Search to proceed.
Quick Search for partitions
■ Confirm according to your OS and created partitions to proceed.
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Lost Data & Format Recovery
TestDisk displays the first results in real time.
ACRS
Advanced Computer Repair System
(click on thumb to display the image).
During the Quick Search, TestDisk has found two partitions including the missing logical partition labeled Partition
3.
■ Highlight this partition and press p to list your files (to go back to the previous display, press q to Quit).
All directories and data are correctly listed.
■ Press Enter to proceed.
Save the partition table or search for more partitions?
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ilovepetras.com
Lost Data & Format Recovery
ACRS
Advanced Computer Repair System
■ When all partitions are available and data correctly listed, you should go to the menu Write to save the partition
structure. The menu Extd Part gives you the opportunity to decide if the extended partition will use all available
disk space or only the required (minimal) space.
■ Since a partition, the first one, is still missing, highlight the menu Deeper Search (if not done automatically
already) and press Enter to proceed.
A partition is still missing: Deeper Search
Deeper Search will also search for FAT32 backup boot sector, NTFS backup boot superblock, ext2/ext3 backup
superblock to detect more partitions,
it will scan each cylinder
After the Deeper Search, the results are displayed as follows:
The first partition "Partition 1" was found by using backup boot sector. In the last line of your display, you can read
the message "NTFS found using backup sector!" and the size of your partition. The "partition 2" is displayed twice
with different size.
Both partitions are listed with status D for deleted, because they overlap each other.
■ Highlight the first partition Partition 2 and press p to list its data.
The file system of the upper logical partition (label Partition 2) is damaged
■
■
■
■
(click on thumb).
Press q for Quit to go back to the previous display.
Let this partition Partition 2 with a damaged file system marked as D(deleted).
Highlight the second partition Partition 2 below
Press p to list its files.
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Lost Data & Format Recovery
ACRS
Advanced Computer Repair System
It works, you have found the correct partition!
■ Use the left/right arrow to navigate into your folders and watch your files for more verification
Note: FAT directory listing is limited to 10 clusters - some files may not appear but it doesn't affect recovery.
■ Press q for Quit to go back to the previous display.
■ The available status are Primary, * bootable, Logical and Deleted.
Using the left/right arrow keys, change the status of the selected partition to L(ogical)
Hint: read How to recognize primary and logical partitions?
Note: If a partition is listed *(bootable) but if you don't boot from this partition, you can change it to Primary partition.
■ Press Enter to proceed.
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Lost Data & Format Recovery
ACRS
Advanced Computer Repair System
Partition table recovery
It's now possible to write the new partition structure.
Note: The extended partition is automatically set. TestDisk recognizes this using the different partition structure.
■ If all partitions are listed and only in this case, confirm at Write with Enter, y and OK.
Now, the partitions are registered in the partition table.
NTFS Boot sector recovery
The boot sector of the first partition named Partition 1 is still damaged. It's time to fix it. The status of the NTFS
boot sector is bad and the backup boot sector is valid. Boot sectors are not identical.
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ilovepetras.com
Lost Data & Format Recovery
ACRS
Advanced Computer Repair System
■ To copy the backup of the boot sector over the boot sector, select Backup BS, validate with Enter, use y to
confirm and next OK.
More information about repairing your boot sector under TestDisk Menu Items. The following message is displayed:
The boot sector and its backup are now both OK and identical: the NTFS boot sector has been successfully recovered.
■ Press Enter to quit.
■ TestDisk displays You have to restart your Computer to access your data so press Enter a last time and reboot
your computer.
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