Search found 14 matches

by kja70
Sat Jun 12, 2021 9:10 pm
Forum: LibreDrive drives
Topic: ddrescue shows 0 errors/100% rescued on Libre-enabled drive, but makemkv fails with hashcheck errors
Replies: 12
Views: 617

Re: ddrescue shows 0 errors/100% rescued on Libre-enabled drive, but makemkv fails with hashcheck errors

Thanks for the explanation. Is there any workaround with either factory or libre firmware? One problem with this feature is you have no way to know which sectors are actually bad so you couldn’t use ddrescue to create a good image (either just by trimming and scraping one disc, or by combining the g...
by kja70
Fri Jun 04, 2021 12:45 am
Forum: LibreDrive drives
Topic: ddrescue shows 0 errors/100% rescued on Libre-enabled drive, but makemkv fails with hashcheck errors
Replies: 12
Views: 617

Re: ddrescue shows 0 errors/100% rescued on Libre-enabled drive, but makemkv fails with hashcheck errors

So restoring the firmware (to DE_flash_HL-DT-ST_BD-RE_BU40N_BU10.bin) seems to have fixed the problem. With the Libre firmware, makemkv failed entirely when it hit the bad area and stopped copying. With the original firmware, makemkv is able to power through -- it successfully copied the file, notin...
by kja70
Thu Jun 03, 2021 3:44 pm
Forum: LibreDrive drives
Topic: ddrescue shows 0 errors/100% rescued on Libre-enabled drive, but makemkv fails with hashcheck errors
Replies: 12
Views: 617

Re: ddrescue shows 0 errors/100% rescued on Libre-enabled drive, but makemkv fails with hashcheck errors

You can use the de firmware i edited its all original except for 1 value change to allow downgrades Or go to lgs website and put the latest 1.04 of but I'm telling you it's a waste of time and your just risking your drive for no reason Sorry if I'm being dense--where do I find the de firmware? I se...
by kja70
Thu Jun 03, 2021 3:18 pm
Forum: LibreDrive drives
Topic: ddrescue shows 0 errors/100% rescued on Libre-enabled drive, but makemkv fails with hashcheck errors
Replies: 12
Views: 617

Re: ddrescue shows 0 errors/100% rescued on Libre-enabled drive, but makemkv fails with hashcheck errors

instructions for re-imaging the firmware that came with the drive? I have a tar file I created using sdftool dump before imaging Libre, but it's not clear to me what steps I take to restore those files to the drive. The tar file contains: fd_fwdate.bin fd_sn.bin inq.bin rom_003000.bin rom_1EC000.bi...
by kja70
Thu Jun 03, 2021 12:00 pm
Forum: LibreDrive drives
Topic: ddrescue shows 0 errors/100% rescued on Libre-enabled drive, but makemkv fails with hashcheck errors
Replies: 12
Views: 617

Re: ddrescue shows 0 errors/100% rescued on Libre-enabled drive, but makemkv fails with hashcheck errors

might be a bad memory issue. its also possible that libedrive itself mucks with the content. experiment with a disc that makemkv doesn't complain about and see if the same thing happens (i.e. that you get diffrent checksums each time) I have processed several other BD discs (using both MakeMKV and ...
by kja70
Wed Jun 02, 2021 12:53 pm
Forum: LibreDrive drives
Topic: ddrescue shows 0 errors/100% rescued on Libre-enabled drive, but makemkv fails with hashcheck errors
Replies: 12
Views: 617

Re: ddrescue shows 0 errors/100% rescued on Libre-enabled drive, but makemkv fails with hashcheck errors

Further update--I've now run ddrescue six times, some without "blessing" the disc first, some after. Each time results in a file with a different md5sum, despite the fact that ddrescue reports 100% rescued. Could this be a Libre firmware issue? Should I try to restore the original firmware?
by kja70
Tue Jun 01, 2021 1:40 pm
Forum: LibreDrive drives
Topic: ddrescue shows 0 errors/100% rescued on Libre-enabled drive, but makemkv fails with hashcheck errors
Replies: 12
Views: 617

ddrescue shows 0 errors/100% rescued on Libre-enabled drive, but makemkv fails with hashcheck errors

I have a BD-RE HL-DT-ST BD-RE BU40N flashed with Libre firmware 1.04 (21200506). I own a slightly scratched BD that I am trying to backup with the method recommended here — first use makemkvcon to “bless” the disc, then ddrescue -b2048 to make an ISO copy. ddrescue completes with 0 errors, and repor...
by kja70
Wed Jun 17, 2020 1:04 pm
Forum: Advanced MakeMKV usage
Topic: Possible to create a decrypted backup from an encrypted ISO?
Replies: 14
Views: 19601

Re: Possible to create a decrypted backup from an encrypted ISO?

How would you mount the ISO as a "virtual drive" in Linux? The conventional method is to mount an ISO as a loopback device, in which case makemkv doesn't have an option to open the device, only a file within the already mounted filesystem. Once you open a file like discatt.dat, makemkv gr...
by kja70
Tue Jun 16, 2020 2:29 pm
Forum: Advanced MakeMKV usage
Topic: Possible to create a decrypted backup from an encrypted ISO?
Replies: 14
Views: 19601

Re: Possible to create a decrypted backup from an encrypted ISO?

One clunky solution that works -- I created a Linux VM and added the ddrescued ISO as an optical device, so it shows up as /dev/cdrom. makemkv from within the VM is then able to rip/decrypt it normally from that device node. Seems like it should be possible, then, to do this without a VM.
by kja70
Tue Jun 16, 2020 2:06 pm
Forum: Advanced MakeMKV usage
Topic: Possible to create a decrypted backup from an encrypted ISO?
Replies: 14
Views: 19601

Re: Possible to create a decrypted backup from an encrypted ISO?

Enable LibreDrive before you use dd rescue. Then mount the resulting iso as a virtual drive, open makemkv and select the backup option to make a decrypted folder backup. How would you mount the ISO as a "virtual drive" in Linux? The conventional method is to mount an ISO as a loopback dev...
by kja70
Tue Jun 16, 2020 11:31 am
Forum: Advanced MakeMKV usage
Topic: Possible to create a decrypted backup from an encrypted ISO?
Replies: 14
Views: 19601

Re: Possible to create a decrypted backup from an encrypted ISO?

You need to provide information that MakeMKV usually gets from asking the drive for. Search for "discatt" here on the forum for how to obtain it (assuming you have the original disk). Right, I do have the relevant discatt.dat file. But how do I tell makemkvcon (or makemkv) to make a decry...
by kja70
Mon Jun 15, 2020 9:40 pm
Forum: Advanced MakeMKV usage
Topic: Possible to create a decrypted backup from an encrypted ISO?
Replies: 14
Views: 19601

Re: Possible to create a decrypted backup from an encrypted ISO?

https://makemkv.com/forum/viewtopic.php?f=12&t=17087&p=60530&hilit=discatt#p60530 This appears to be something slightly different -- if I make a decrypted backup of a physical disc, I can use other tools like VLC, ffmpeg, etc, directly on the m2ts files that have been thus decrypted. Th...
by kja70
Mon Jun 15, 2020 8:43 pm
Forum: Advanced MakeMKV usage
Topic: Possible to create a decrypted backup from an encrypted ISO?
Replies: 14
Views: 19601

Re: Possible to create a decrypted backup from an encrypted ISO?

You need to provide information that MakeMKV usually gets from asking the drive for. Search for "discatt" here on the forum for how to obtain it (assuming you have the original disk). Right, I do have the relevant discatt.dat file. But how do I tell makemkvcon (or makemkv) to make a decry...
by kja70
Mon Jun 15, 2020 7:45 pm
Forum: Advanced MakeMKV usage
Topic: Possible to create a decrypted backup from an encrypted ISO?
Replies: 14
Views: 19601

Possible to create a decrypted backup from an encrypted ISO?

I often create ISO files from old/scratched media using ddrescue. I understand the workflow to generate an MKV of a title from the ISO file, but have not been able to find a way to obtain the same functionality as "makemkvcon backup --decrypt" with an ISO file as the source, rather than a ...