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Currently I'm using DOS 6.22. However, I was wondering what the differences are between it and DOS 7.1. So, would anyone mind enlightening me? Thanks.

FAT32 capability for one. Also fdisk support for large drives is another.
Wengier will be around soon to better explain.

Yes, there are many enhancements, new features and bugfixes in MS-DOS 7.10 since MS-DOS 6.x. For example:
* FAT32 and FAT32X drives support (*very* important nowadays)
* Extended FAT16 (a.k.a. FAT16X, type 0E, usually being the primary partition) drives support
* Large hard disk and LBA ExtendedX (Int 13x) partition (type 0F) support (*very* important nowadays)
* Native Long File Names (LFN) support
* Full Y2K (Year 2000) compliant and supports 4-digit years (e.g. DIR /4)
* Large memory (>64MB) and XXMS 3.0 support
* Efficient use of UMB memory (The DOS kernel and COMMAND.COM are loaded high automatically)
* Extended commands in CONFIG.SYS to use UMB memory, such as FILESHIGH, BUFFERSHIGH
* Environments variables can be used in the DOS command line directly, e.g. ECHO %PATH%
* The maximum length for path variable is expanded
* Some new commands added, such as ACCDATE, LOGO(in CONFIG.SYS)
* Volume LOCK/UNLOCK feature added to protect data and LFN on the (hard) disks
* EDIT can be used to edit both text and binary files and multiple files
* REN can rename a directory as well as files
* The locations of DOS system files (especially IO.SYS) are much more flexible
* Dual-boot with older versions of MS-DOS (e.g. DOS 6.x) feature added
* Animated startup logo support by using a custom LOGO.SYS file
* You can decide whether to execute a command using Enter/ESC key now while using the step-by-step feature
* Support for loading Win9x GUI (including all versions from Win95/95A to Win98SE GUI) on top added
* Many undocumented but useful options and switches added, such as COMMAND /Z
* Updated and newer versions of DOS commands and tools included, such as MORE, MSCDEX, MSDAnd of course many more.
Note: Most DOS-based versions of Windows, like Win3.x/95/98 GUI will work fine on top of MS-DOS 7.10, but not on MS-DOS 6.22.

Great, thanks for all the info! One quick question though... Does 7.1 have any backward-compatability issues; if I can run it in 6.22, will I still be able to run it in 7.1? Pretty sure I will, but just wanted to be sure, as I've read that Windows 3.1 has some problems there. Though I did find a patch for that paticular problem. Thanks for the help!

"Does DOS 7.1 have any backward-compatability issues? Pretty sure I will, but just wanted to be sure"
Not really, as I have used it on my computers for a couple of years. Also, there is no Win3.1 problems with it there(if there is any, then it's Win3.1's own bug, like the permanent swap file bug), so you don't need to patch anything.

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