Closed HaleTom closed 8 years ago
I disagree. Old partitioning tools aligns partition to cylinder boundary. To recover lost partitions, a "correct" CHS geometry is needed. I will close this issue but you can reopen it and add a comment if necessary.
Hello, today I used ddrescue to rescue one customer's drives, newer model WD 1TB HDD, many thanks for your work!
In Deep Analysis I get a ton of these Warnings when opening the disk image similar to those described by HaleTom:
An excerpt follows:
TestDisk 7.0, Data Recovery Utility, April 2015
Christophe GRENIER <grenier@cgsecurity.org>
http://www.cgsecurity.org
Disk customer.hddimage.ddrescue - 1000 GB / 931 GiB - CHS 121602 255 63
Analyse cylinder 33588/121601: 27%
Warning: number of sectors per track mismatches 18 (FAT) != 63 (HD)
MS Data 111728512 111731391 2880 [EFISECTOR]
Warning: number of heads/cylinder mismatches 2 (FAT) != 255 (HD)
Warning: number of sectors per track mismatches 18 (FAT) != 63 (HD)
MS Data 121808464 121811343 2880 [EFISECTOR]
Warning: number of heads/cylinder mismatches 16 (NTFS) != 255 (HD)
Warning: number of sectors per track mismatches 2 (NTFS) != 63 (HD)
MS Data 126806067 126812240 6174
Warning: number of heads/cylinder mismatches 16 (NTFS) != 255 (HD)
Warning: number of sectors per track mismatches 2 (NTFS) != 63 (HD)
MS Data 126812240 126818413 6174 [Boot]
Warning: number of heads/cylinder mismatches 16 (NTFS) != 255 (HD)
Warning: number of sectors per track mismatches 2 (NTFS) != 63 (HD)
MS Data 150319139 150325312 6174
Warning: number of heads/cylinder mismatches 16 (NTFS) != 255 (HD)
Warning: number of sectors per track mismatches 2 (NTFS) != 63 (HD)
MS Data 150325312 150331485 6174 [Boot]
Warning: number of heads/cylinder mismatches 16 (NTFS) != 255 (HD)
Warning: number of sectors per track mismatches 2 (NTFS) != 63 (HD)
MS Data 153092627 153098800 6174
Warning: number of heads/cylinder mismatches 16 (NTFS) != 255 (HD)
Warning: number of sectors per track mismatches 2 (NTFS) != 63 (HD)
MS Data 153098800 153104973 6174 [Boot]
Warning: number of heads/cylinder mismatches 16 (NTFS) != 255 (HD)
Warning: number of sectors per track mismatches 2 (NTFS) != 63 (HD)
MS Data 157120947 157127120 6174
Warning: number of heads/cylinder mismatches 16 (NTFS) != 255 (HD)
Warning: number of sectors per track mismatches 2 (NTFS) != 63 (HD)
MS Data 157127120 157133293 6174 [Boot]
Warning: number of heads/cylinder mismatches 16 (NTFS) != 255 (HD)
Warning: number of sectors per track mismatches 2 (NTFS) != 63 (HD)
MS Data 165788235 165794408 6174
Warning: number of heads/cylinder mismatches 16 (NTFS) != 255 (HD)
Warning: number of sectors per track mismatches 2 (NTFS) != 63 (HD)
MS Data 165794408 165800581 6174 [Boot]
Warning: number of heads/cylinder mismatches 2 (FAT) != 255 (HD)
Warning: number of sectors per track mismatches 18 (FAT) != 63 (HD)
MS Data 174763744 174766623 2880 [EFISECTOR]
Warning: number of heads/cylinder mismatches 2 (FAT) != 255 (HD)
Warning: number of sectors per track mismatches 18 (FAT) != 63 (HD)
MS Data 174766624 174769503 2880 [EFISECTOR]
Warning: number of heads/cylinder mismatches 16 (NTFS) != 255 (HD)
Warning: number of sectors per track mismatches 2 (NTFS) != 63 (HD)
MS Data 174875283 174881456 6174
Warning: number of heads/cylinder mismatches 16 (NTFS) != 255 (HD)
Warning: number of sectors per track mismatches 2 (NTFS) != 63 (HD)
MS Data 174881456 174887629 6174 [Boot]
MS Data 379507502 395025901 15518400
MS Data 379507504 395025903 15518400
check_FAT: Bad number of sectors per cluster
MS Data 450424454 465942853 15518400
MS Data 450424456 465942855 15518400
I am confused right now, as to if I can simply ignore those now after what you said.
OS: GNU/Linux Debian 9 (Stretch).
Could you please elaborate? Thank you in advance!
I asked on askubuntu.com about warnings of geometry mismatches, and apparently these warnings don't make sense for partitions over 8GB in size.
I tried to build to see if the warnings still appear on the latest version, but I got stuck at Issue #10.