Can I Increase the Speed of Recovery by Adjusting Initial Parameters

Using PhotoRec to recover lost data
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malcolm
Posts: 2
Joined: 04 Oct 2019, 02:24

Can I Increase the Speed of Recovery by Adjusting Initial Parameters

#1 Post by malcolm » 04 Oct 2019, 02:48

I'm using PhotoRec to recover files from an external USB 125GB. The recovery process has been running for several days and the estimated duration is another week. That is a little bit longer than I anticipated the job would take when I began. :)

I'm wondering if I should stop the process and start again. Is it possible to get better performance by modifying the initial parameters?

In addition, I have some questions about the current process.

The first few lines of the output at the moment are:

Code: Select all

PhotoRec 7.2-WIP, Data Recovery Utility, July 2019
Christophe GRENIER <grenier@cgsecurity.org>
https://www.cgsecurity.org

Disk /dev/rdisk3 - 123 GB / 114 GiB (RO)
     Partition                  Start        End    Size in sectors
 1 * HFS                     32   0  1 240254975   0  1  240254944

Destination /Volumes/Seagate Backup Plus Drive/space_bak/recup_dir

Pass 1 - Reading sector   71756960/240254944, 21104300 files found
Elapsed time 73h33m10s - Estimated time to completion 172h42m53
Several items in the output stand out for me:
  • The line beginning with "Pass 1 - Reading sector" has two numbers "71756960/240254944". The number 71756960, which I assume is the current sector, has not changed, although the number of files found climbs steadily.
  • The estimated time to completion increases approximately 2 seconds for each second that the program has been running.
For both items, is that normal behaviour or does it indicate an issue?

thanks,

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Re: Can I Increase the Speed of Recovery by Adjusting Initial Parameters

#2 Post by cgrenier » 05 Oct 2019, 09:33

What are the names of the latest files recovered by PhotoRec ?

malcolm
Posts: 2
Joined: 04 Oct 2019, 02:24

Re: Can I Increase the Speed of Recovery by Adjusting Initial Parameters

#3 Post by malcolm » 07 Oct 2019, 04:29

The last directory to be created is empty but the one before that contains a file. Here's the output.

Code: Select all

| /Volumes/Seagate Backup Plus Drive/space_bak @ MacBook-Pro-3 (malcolm)
| => ls recup_dir.43093
________________________________________________________________________________
| /Volumes/Seagate Backup Plus Drive/space_bak @ MacBook-Pro-3 (malcolm)
| => ls recup_dir.43092
f71756960.fp12
________________________________________________________________________________
| /Volumes/Seagate Backup Plus Drive/space_bak @ MacBook-Pro-3 (malcolm)
| => ls recup_dir.43091
f71756960.fp12
________________________________________________________________________________
| /Volumes/Seagate Backup Plus Drive/space_bak @ MacBook-Pro-3 (malcolm)
| => ls recup_dir.43090
f71756960.fp12
________________________________________________________________________________
| /Volumes/Seagate Backup Plus Drive/space_bak @ MacBook-Pro-3 (malcolm)
| => ls recup_dir.43089
f71756960.fp12

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