1 00:00:06,450 --> 00:00:12,900 The operating system environment doing reverse engineering requires the analyst to understand where 2 00:00:12,900 --> 00:00:19,890 the software being used in being run in major powers the software requires in order to work in an operating 3 00:00:19,890 --> 00:00:23,130 system or the memory and the file system. 4 00:00:26,150 --> 00:00:33,740 In Windows operating systems besides in-memory and the fire system, Microsoft introduced the registry 5 00:00:33,740 --> 00:00:39,890 system, which is actually stored in protected files called Registry Hy's. 6 00:00:42,990 --> 00:00:43,920 The fire system. 7 00:00:45,000 --> 00:00:50,880 The fire system is a very data is stored directly to the physical disk drive. 8 00:00:51,820 --> 00:01:00,070 These systems manage how files and directories are stored in the disk varis disk systems have their 9 00:01:00,070 --> 00:01:04,500 own variation of effusions, reading and writing data. 10 00:01:05,440 --> 00:01:15,550 There are different Esquire systems such as Ford Interface X two x three, expensive as an AP if as 11 00:01:16,180 --> 00:01:25,520 common filesystems used by Windows are for 32 and NTFS stored in the file system is information about 12 00:01:25,520 --> 00:01:27,580 the director of parts and fires. 13 00:01:27,760 --> 00:01:33,100 It includes the file names, size of the files, data systems and permissions. 14 00:01:35,500 --> 00:01:44,460 In a previous make with or six versions, while information and data are stored in resource for US, 15 00:01:45,340 --> 00:01:51,850 efforts are actually duplicated by backward compatibility, still exist on our recent versions of Make 16 00:01:51,880 --> 00:01:56,520 OS, a file has to fork stored in the file system. 17 00:01:56,800 --> 00:02:04,690 The data fork and resource for the data for contains unstructured data, while the resource for contains 18 00:02:04,690 --> 00:02:05,760 structured data. 19 00:02:06,250 --> 00:02:13,990 There is a resource for contains information such as the executable machine code icons, shape of an 20 00:02:13,990 --> 00:02:18,190 alert box string used in the file and so forth. 21 00:02:18,700 --> 00:02:27,040 For instance, if you wanted to make up a make application by simply moving it to the Windows hard drive, 22 00:02:27,040 --> 00:02:34,240 then moving at the back to make application will no longer open while transferring onto the file gets 23 00:02:34,240 --> 00:02:34,750 transferred. 24 00:02:34,750 --> 00:02:37,870 But the resource for gets tripped up in the process. 25 00:02:38,680 --> 00:02:46,210 Simply competence and respect, of course, is that many developers developed tools to synchronize files 26 00:02:46,480 --> 00:02:49,060 to and from external disks.