Editing COMMAND.COM (section)

==Further reading==
{{quote box|width=60%|source={{cite web |title=Re: Random Lockups with DR-DOS 7.03 |date=2004-06-17 |number=3 |author-first=Matthias R. |author-last=Paul |work=[[FidoNet]] conference: ALT_DOS |url=https://fidonet.ozzmosis.com/echomail.php/alt_dos/e812a919c10339d0.html |access-date=2019-04-28 |url-status=dead |archive-url=https://archive.today/20190428181749/https://fidonet.ozzmosis.com/echomail.php/alt_dos/e812a919c10339d0.html |archive-date=2019-04-28}} |quote=[...] all MS-DOS versions prior to Windows 95 [...] used a COM style COMMAND.COM file which has a special signature at the start of the file [...] queried by the MS-DOS BIOS before it loads the shell, but not by the DR-DOS BIOS [...] COMMAND.COM would [...] check that it is running on the "correct" DOS version, so if you would load their COMMAND.COM under DR-DOS, you would receive a "Bad version" error message and their COMMAND.COM would exit, so DR-DOS would [...] display an error message "Bad or missing command interpreter" (if DR-DOS was trying to load the SHELL= command processor after having finished CONFIG.SYS processing). In this case, you could enter the path to a valid DR-DOS COMMAND.COM (C:\DRDOS\COMMAND.COM) and everything was fine. Now, things have changed since MS-DOS 7.0 [...] COMMAND.COM has internally become an EXE style file, so there is no magic [...] signature [...] to check [...] thus no way for DR-DOS to rule out an incompatible COMMAND.COM. Further, their COMMAND.COM no longer does any version checks, but [...] does not work under DR-DOS [...] just crashes [...] the PC DOS COMMAND.COM works fine under DR-DOS [...] }}
* {{Cite book |author-last=Cooper |author-first=Jim |title=Special Edition Using MS-DOS 6.22 |edition=3 |date=2001 |publisher=[[Que Publishing]] |isbn=978-0-78972573-8}}
* {{Cite book |author-last=Wolverton |author-first=Van |title=MS-DOS Commands: Microsoft Quick Reference |edition=4th revised |date=1990 |publisher=[[Microsoft Press]] |isbn=978-1-55615289-4}}
* {{webarchive |url=https://archive.today/20190501023329/http://www.delorie.com/opendos/archives/browse.cgi?p=opendos/2004/06/17/06:23:16}}
* {{webarchive |url=https://archive.today/20190428182007/http://www.fybertech.com/misc/qwkview/qwkview.pl?conf=3010}}