Hey, I'm working on a CD reformatting project for Pratt Institute Libraries, and I came across a batch of CDs with a Device Block Size of 2352 Bytes, as noted in the text document attached. Our usual command has been the following:
ddrescue -r4 -b 2048 -v /dev/disk# /path/to/diskImageName.iso /path/to/diskImageName.log I tried changing 2048 to 2352, but the response was the same, "Unaligned read error. Is sector size correct?" Let me know how I should troubleshoot this issue? Many thanks, Xavi Danto -- Xavi Danto (pron. zay-vee dan-toe) [They/Them/Their] Pratt Institute 200 Willoughby Avenue · · Brooklyn, NY 11205 [email protected] <https://www.pratt.edu/>
Device Identifier: disk4 Device Node: /dev/disk4 Whole: Yes Part of Whole: disk4 Device / Media Name: HL-DT-ST BD-RE BH16NS40 Volume Name: Not applicable (no file system) Mounted: Not applicable (no file system) File System: None Content (IOContent): CD_partition_scheme OS Can Be Installed: No Media Type: Protocol: USB SMART Status: Not Supported Disk Size: 846.4 MB (846360144 Bytes) (1653047 512-Byte-Units + 80 Byte(s)) Device Block Size: 2352 Bytes Media OS Use Only: No Media Read-Only: Yes Volume Read-Only: Not applicable (no file system) Device Location: External Removable Media: Removable Media Removal: Software-Activated Solid State: Info not available Virtual: No Optical Drive Type: CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-R, DVD-R DL, DVD-RW, DVD-RAM, DVD+R, DVD+R DL, DVD+RW, BD-ROM, BD-R, BD-RE Optical Media Type: CD-R Optical Media Erasable: No
