Zitat von Gordon Messmer <gordon.messmer at gmail.com>: > On 11/4/21 09:23, Ralf Prengel wrote: >> has anyone a working tutoring how to migrate a centos 7 system from >> mbr to gpt without loosing data. > > > Do you mean the boot volume, or some other disk? > > I think your ability to do this, in any scenario, will depend > heavily on your partition alignment. Where does your first > partition begin? > > _______________________________________________ Hallo, solved. ttps://polarclouds.co.uk/mbr-gpt-no-data-loss/ Ich tried it using disk sda for fisr tests. Using sdb as a non boot disk worked. Thanks for yours answer. Ralf