Magic number

[Rochik]

GROMACS version: 2023
Hello all,
I finished a 1-micro-sec MD simulation, and I have 3 trajectories (because of some reasons the calculation stopped and I had to restart from the last point), now I need to concatenate the three trajectories by this command:
gmx trjcat -f md_0_1.part0001.xtc md_0_1.part0002.xtc md_0_1.part0003.xtc -o total.xtc
but i faced this error:
Fatal error:
Magic Number Error in XTC file (read 0, should be 1995)
Do you know how I can solve it?
Thank you

[FarzaneJP]

comments from Erik Lindahl on this error:

Magic number error in xtc file

The header of each XTC frame contains this number to designate it as an XTC frame. For whatever reason, your file has completely different data there. If this happens half-way through the file, you can still rescue the earlier parts by reading and then writing to another file. Unfortunately this means your file (i.e., disk storage) is corrupted in a major way. This can be due to a number of reasons, all of which are not part of GROMACS (Bad disk, bad controller, corrupted file system, multiple …

[Rochik]

Thank you so much for your help.