How-TomacOS Limitations
August 25, 2025
Resource Fork Files
Resource fork files cannot be restored with AhsayOBM installation on macOS 10.8 above.
Case-Insensitive File System
For volumes with a case-insensitive file system, target file of a symbolic link will be backed up twice (in both upper case and in lower case), hence, doubling the backup quota storage requirement.
Non-Compressible Files
The following is a list of non-compressible files:
| Non-Compressible Files | |
|---|---|
| Archive | |
| .7z | .bz2 |
| .gz | .rar |
| .xz | .zip |
| Audio | |
| .aac | .ac3 |
| .aifc | .amr |
| .flac | .m4a |
| .mka | .mp2 |
| .mp3 | .mpa |
| .ogg | .ra |
| .rm | .snd |
| .ssm | .wma |
| Graphics | |
| .gif | .jfif |
| .jpeg | .jpg |
| .png | .wim |
| .wmp | .wmz |
| Video | |
| .3gp | .asf |
| .divx | .ivf |
| .m4v | .mkv |
| .mp2v | .mp4 |
| .mpeg | .mpg |
| .mts | .qt |
| .rv | .smil |
| .vob | .webm |
| .wmd | .wmv |
| .avi | .m1v |
| .mov | .mpe |
| .mpv2 | .rmvb |
| .swf | .wm |