Only ADFS L images are non-sequential. So the default should be to auto-detect: if disk size (as reported by catalogue) implies ADFS L, assume trackwise; otherwise, assume sequential.
Then --sequential is always there if you need it.
Use the catalogue's reported disk size as the file could be a hard disk image that's smaller than the actual total size.
Only ADFS L images are non-sequential. So the default should be to auto-detect: if disk size (as reported by catalogue) implies ADFS L, assume trackwise; otherwise, assume sequential.
Then
--sequentialis always there if you need it.Use the catalogue's reported disk size as the file could be a hard disk image that's smaller than the actual total size.