Are you in a situation where you are getting volume bitmap needs minor repair message on your Mac. You system was working fine but from some time you have notices that there is some inconsistency in the drive performance like the information of the free space on the drive is seeming wrong, some of the files are not getting saved and hence getting lost. You are not able to create a new partition or use the boot camp process to install the Windows operating system. When you use the disk utility of Mac to check for the Mac drive health you get the volume bitmap needs minor repair error. You may use the tool to repair it but there can be case where it will get fail to fix it then you may have to format the drive. This will solve the problem but you will lose your precious data while formatting. The time machine backup can be used to recover data but if it is not available then you can use the Mac data recovery software which will throughly scan the Mac drive and all the files can be restored from the preview. So download the software and use it.