Issues with recovering PDF files
Posted: 12 Aug 2014, 04:53
Hi,
I'm recently hit by the Synolocker ransomware and I'm trying to use PhotoRec to recover my files. I had pretty good success recovering jpegs, but I have issues with PDFs. What I observed when recovering PDFs is that PhotoRec would sometimes create, as recovered files, very large files (~1GB), then after a while, these large files are deleted, and PhotoRec would retrogress on the sectors read. After the deletion, PhotoRec usually creates a new recovered file (usually much smaller, sometimes with readable content, sometimes not). It seems that initially PhotoRec didn't know where the file would end, so it kept on reading and writing, and then at some point it realized it has read too much/or encountered some kind of error, and bailed out.
As a result of this behaviour (writing large files and deleting them, and retrogressing), the recovery process becomes excruciatingly long (thousands of hours ETA, and who knows how long it would actually take!) on a 3TB disk
Can anyone shed some light on what's happening behind the scene, and what I can do to speed up the process??
Thank you!!
Jia
I'm recently hit by the Synolocker ransomware and I'm trying to use PhotoRec to recover my files. I had pretty good success recovering jpegs, but I have issues with PDFs. What I observed when recovering PDFs is that PhotoRec would sometimes create, as recovered files, very large files (~1GB), then after a while, these large files are deleted, and PhotoRec would retrogress on the sectors read. After the deletion, PhotoRec usually creates a new recovered file (usually much smaller, sometimes with readable content, sometimes not). It seems that initially PhotoRec didn't know where the file would end, so it kept on reading and writing, and then at some point it realized it has read too much/or encountered some kind of error, and bailed out.
As a result of this behaviour (writing large files and deleting them, and retrogressing), the recovery process becomes excruciatingly long (thousands of hours ETA, and who knows how long it would actually take!) on a 3TB disk
Can anyone shed some light on what's happening behind the scene, and what I can do to speed up the process??
Thank you!!
Jia