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中国DOS联盟论坛 The time now is 2026-08-19 13:59 |
47,814 topics / 349,908 posts / today 0 new / 48,259 members |
| DOS疑难解答 & 问题讨论 （解答室） » Does anyone know how to compress the IO.SYS and COMMAND.COM files in MS-DOS 7.x |
| Printable Version 4,308 / 19 |
| Floor1 Wengier | Posted 2003-02-23 00:00 |
| 系统支持 Posts 10,521 Credits 27,736 | |
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The IO.SYS and COMMAND.COM files in MS-DOS 7.x are especially large, more than 300K total. Can anyone compress them? I’ve tried UPX, PKLITE, APACK, DIET, and COMPREXE, but none of them worked.
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| Floor2 Roy | Posted 2003-02-24 00:00 |
| 管理员 Posts 1,633 Credits 4,869 | |
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To compress programs in DOS 7.x/8.x, you can use COMPREXE -h
But COMMAND.COM cannot be compressed |
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| Floor3 Wengier | Posted 2003-02-24 00:00 |
| 系统支持 Posts 10,521 Credits 27,736 | |
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I know, that person on the UPX forum already said so. But COMMAND.COM, IO.SYS, and FORMAT.COM and the like still won’t work.
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| Floor4 Roy | Posted 2003-02-24 00:00 |
| 管理员 Posts 1,633 Credits 4,869 | |
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I tried it. IO.SYS can be compressed with Comprexe -h, Command.com can be compressed but can’t be used, and for Format.com you should still use the one compressed by the author of APACK.
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| Floor5 Wengier | Posted 2003-02-24 00:00 |
| 系统支持 Posts 10,521 Credits 27,736 | |
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Which version of APACK was used to compress FORMAT.COM? I tried versions 0.91, 0.98, and 0.99, but none of them worked. Also, although IO.SYS can be compressed by COMPREXE, the compression ratio is too small, basically the same as not being compressed at all.
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| Floor6 Roy | Posted 2003-02-24 00:00 |
| 管理员 Posts 1,633 Credits 4,869 | |
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This FORMAT.COM was compressed by the author of APACK himself
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| Floor7 Roy | Posted 2003-02-24 00:00 |
| 管理员 Posts 1,633 Credits 4,869 | |
| Floor8 Wengier | Posted 2003-02-24 00:00 |
| 系统支持 Posts 10,521 Credits 27,736 | |
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Strange, did the author of APACK never release this version of APACK that can compress FORMAT?
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| Floor9 Wengier | Posted 2003-02-25 00:00 |
| 系统支持 Posts 10,521 Credits 27,736 | |
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Roy, do you have compressed versions of MODE.COM, SYS.COM, and CHKDSK.EXE and the like?
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| Floor10 Wengier | Posted 2003-02-25 00:00 |
| 系统支持 Posts 10,521 Credits 27,736 | |
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Also, I found that besides COMPREXE, EPACK 1.6 can also successfully compress files like EDIT.COM (although the compression ratio is not as high as COMPREXE), and it can also successfully compress files like FORMAT and MORE. Although the COMMAND.COM file compressed with it can run(!), it uses more than 70K more conventional memory.
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| Floor11 jssyq | Posted 2003-02-25 00:00 |
| 银牌会员 Posts 498 Credits 1,231 | |
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Compressed COMMAND.COM and IO.SYS files, experts and moderators please work on it
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| Floor12 Roy | Posted 2003-02-25 00:00 |
| 管理员 Posts 1,633 Credits 4,869 | |
The following is quoted from Wengier at 2003-2-25 1:38:44: I don’t have MODE.COM, but I do have SYS.COM and CHKDSK.EXE Open attachment |
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| Floor13 Wengier | Posted 2003-03-03 00:00 |
| 系统支持 Posts 10,521 Credits 27,736 | |
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That CHKDSK is the same size as the original one.
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| Floor14 ko20010214 | Posted 2003-03-13 00:00 |
| 版主 Posts 1,628 Credits 7,296 | |
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Compress command.com?
It is itself a command interpreter. If you compress it, who is going to interpret how to decompress it? Seems impossible. |
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| Floor15 wang6-6 | Posted 2003-03-26 00:00 |
| 初级用户 Posts 20 Credits 148 | |
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Why compress these programs? If it’s to fit more stuff onto a boot disk, that’s understandable, but what’s the point of compressing them for normal use? I don’t get it. Could it make them run a bit faster? I think it would only use more memory, right?
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