Hi, I connected my windows removable disk to my colleague's mac to transfer some data. Accidentally her system started a time machine backup on my removable disk. Although we stopped it during middle of the process, now my disk is no longer recognizable in windows and all I can see under a mac system is her backup file. The process took a very short time. I wonder if it has deleted everything. Is there any chance I can get the overwritten data back? They are very important to me. Besides, is it a common problem of time machine backup? It is too dangerous for the removable disks.