Partition error saving solution

The partition error saving solution has recently installed a black apple. At present, the computer is a single hard drive three systems, respectively win7 + ubuntu + mac. Mac boot always boot0 error, each time only through the U disk boot up. If it is inconvenient, try to fix it. Www.2cto.com has a fdisk command on Mac. You can set MBR (Master Boot ). The Java code fdisk-e/dev/rdisk0 is used to go to fdisk management. You can use help to view its detailed commands. Use print to print the partition status and flag to indicate the target to be guided. I am confused with an auto command. I thought this command would be "automatic", but the result was a big mistake. Boot fails after restart. You can use the USB flash drive boot to view the hard disk information, which turns white. It becomes a white disk with no content to read! Www.2cto.com was very anxious to ask a colleague from the IT department for help. The USB flash drive moves into WinPE and uses DiskGenius to search for the partition table. In less than 2 seconds, the partition information is retrieved again. Save and restart, and everything is back to normal. Finally, I would like to thank DiskGenius for being very strong, professional, and domestic software. It is a pity that the price of the Professional Edition is a little high, or you really want to buy a life-saving. However, the free basic version can solve most of the problems. Back up data after retrieval. It is recommended to save important data to the cloud disk, which is more secure.