Technical Documentation for Free. DOS Backup & Restore BACKUP &. RESTORE for the Free. DOS project. They are supposed to be compatible. Free. DOS. and any given DOS version. Unfortunately complete compatibility is no easy. As Free. DOS tries to achieve compatibility to MS- DOS 3. BACKUP and RESTORE of this DOS version was the primary. Extended compatibility will be. Free. DOS versions of BACKUP and. RESTORE. One of the biggest problems. BACKUP and RESTORE for Free. DOS was the fact that. Even different versions. DOS were not able to read each others backup files, giving the user. Consider using the backup program that came with your cd writer instead. Microsoft DOS (MS-DOS) Operating System In July 1980 IBM assigned Microsoft to develop a 16-bit operating system for the personal computer for the fee of 186,000 dollars. Although the company Digital Research of Gary Kildall. At least MS- DOS 6. RESTORE program. (beside the MSBACKUP. EXE) that is able to read at least backup files from. DOS versions 2. x- 5. The basic hints about the. MS- DOS version were found in an article of. German computer magazine c. The presented information were expanded by own reverse engineering. Borland Pascal, were improved to one. RESTORE program. All this work is the base for. Free. DOS versions of BACKUP and RESTORE, written in C (Borland C++ 3. Turbo. C++ 3. 0), as supposed for the Free. DOS development. Some additional information. Microsoft. The BACKUP program of Free. DOS writes only backward. RESTORE program. This avoids any. On at least one system that i aquiered. MS- DOS 3. 2 loaded, the backup files were written with the backward. DOS versions 3. 3. Each backup disk consist. A control file holding name. CONTROL.??? Sorry folks, but I had no interest. A backup file (BACKUP.???). Create a backup with the MS-DOS XCOPY command To display this content, you need a JavaScript. Now, double-click the backup.bat icon to start your backup. The MS-DOS startup disk you create will allow you to boot into MS-DOS. Insert a floppy disk into your computer's floppy drive. Open My Computer, and then click the floppy disk drive to select it. Run DOS programs in Windows 7. By Lincoln Spector, PCWorld. If the DOS program ran in XP, it will probably run in a 32-bit version of Windows 7. But no DOS program can ever run in a 64-bit version of. From Microsoft: Get step-up files for Microsoft MS-DOS 6,22. Microsoft MS-DOS 6.22 Step-Up files. Also available in the following languages: French (stepfrn.exe)German (stepger.exe)Portuguese (steppor.exe)Spanish (stepspa.exe. CONTROL.??? File, which is just one file copied after. The format of the control. Control. file header, 1. Offset. Size. Contents. B, length of the header. The signature ? File. Backup-With-MSDOS mini-HOWTO. Log out of the MS-DOS machine. If you're using the backup scripts. If you have a backup program. A1 byte. File attributes. B1 byte. Unknown. C4 bytes. 1 long, file time/date. DOS format, packed structure)End. Offset. Size. Contents. Data. format for the DOS versions 6. With the newer, more enhanced. DOS emerging, unfortunately compatibility between the different. DOS versions became an illusion. Not only that MS- DOS and PC- DOS went different. Microsoft and IBM, with. Digital Research/Novell there was a third player with an even more different. DOS version. The Backup programs for. DOS versions are actually licensed versions of the Norton (Symantec). Central Point (Symantec) backup programs. They use proprietary compression. All MS-DOS-type operating systems run on machines with the Intel x86 or compatible CPUs. Under DOS, this problem can be worked around by defining a SUBST drive and installing the DOS program into this logical drive.QIC- 1. 13), which are for copyright reasons not usable. Even though. the program became more sophisticated in their abilities, compatibility. DOS versions seems never to be an issue for their implementation. The. Free. DOS BACKUP & RESTORE and the Y2. K issue. Both programs use the DOS. These. timestamps can be considered Y2. K safe. Any date output of these two programs. Coding/Compiling. Requirements. The programs BACKUP and. RESTORE for Free. DOS have been developed using Borland C++ 3. Turbo. C++ 3. 0. They won't compile with the free available Turbo C 2. C++ style '//' comments. The sources. themself are otherwise written in straight ANSI C (with the necessary DOS. C++ code used. All source files use the . C extension. all header files use . They source distribution. PRJ files (in BC/TC 3x format). If time permits and I'm in a good mood (so I'm not getting too. PC- LINT (s. All date inputs have to be made in YYYY- MM- DD format. The current version of the BACKUP. Any backup is written. DOS. Any previous file on the backup. There has been no attempt yet. As soon. as the basic functionality of the programs is achieved, internationalization. German as the first available language. Formatting a new disk is not. Free. DOS format program is not able to support all. I didn. This information is expanded by own re- engineering. MS- DOS BACKUP and RESTORE. BACKUP and RESTORE for Free. DOS. are written in Borland C++ 3. Turbo C++ 3. 0 (. The Free. DOS programs are not compatible. BACKUP/RESTORE programs of these DOS versions! MS- DOS/Windows IBM/PC- DOSDR- DOS/Novell/Open. DOSv. 6. 0v. 6. 0. DR- DOS 6. 0v. 6. Windows 9. 5)v. 7. Novell DOS 7. 0v. Windows 9. 5SR2. Windows 9. PC- DOS 2. 00. 0 Road map for future. Introducing compressed backup.
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