China DOS Union

-- Unite DOS · Advance DOS · Grow DOS --
Union site: www.cn-dos.net　Forum site: www.cn-dos.net/forum

中国DOS联盟论坛
The time now is 2026-08-18 02:13

47,814 topics / 349,907 posts / today 4 new / 48,259 members

DOS疑难解答 & 问题讨论（解答室） » [Closed] How to Improve DOS Disk Performance (Speed Up File Copying, Compression and Decompression Speed)

Printable Version 　2,573 / 16

Floor1　shella	Posted 2006-04-09 17:28
初级用户　Posts 31　Credits 187
rt The advantage of DOS lies in disk management, but at least the file copying speed I use in DOS is not as fast as Windows 5 times slower than Windows Copying a file takes 2 minutes in Windows and 10 minutes in DOS Except for ghost Are there any tips to speed it up? Experts, please give some advice I have already loaded smartdrv [ Last edited by shella on 2006-4-10 at 21:05 ]

Floor2　dato	Posted 2006-04-10 00:32
高级用户　Posts 377　Credits 916
Originally posted by shella at 2006-4-9 05:28 PM: rt The advantage of DOS lies in disk management, but at least the file copying speed I use in DOS is not as fast as Windows 5 times slower than Windows It takes 2 minutes in Windows to copy a file, and 10 minutes in DOS ... Previously, it was XDMA, now it's QDMA. Enabling the hard disk's DMA mode, the speed is good http://johnson.tmfc.net/freedos/qdma.html

Floor3　shella	Posted 2006-04-10 00:43
初级用户　Posts 31　Credits 187
Thanks, is there a simple introduction on how to use it and the parameter descriptions? Those are all in English, can't understand. I followed the instructions to set up: DEVICE=QDBOOT.SYS DEVICE=UMBPCI.SYS I=CC00-EFFF NOEMS DEVICEHIGH=/L:1 QDMA.SYS /O /D /F /L It doesn't work. It shows: QDBOOT V1.0... UltraDMA controller... Primary-master disk is ST380011A. Then it freezes. [ Last edited by shella on 2006-4-10 at 01:59 ]

Floor4　Wengier	Posted 2006-04-10 03:05
系统支持　Posts 10,521　Credits 27,736
Just add this line: DEVICEHIGH=QDMA.SYS Additionally, you can load SMARTDRV to further improve disk speed.

Floor6　shella	Posted 2006-04-10 07:07
初级用户　Posts 31　Credits 187
Originally posted by Wengier at 2006-4-10 03:05 AM: Try adding this line directly: DEVICEHIGH=QDMA.SYS Additionally, you can load SMARTDRV to further improve disk speed. It works! It can already reach 1/2 the speed of Windows. I tried again DEVICEHIGH=LOWDMA.SYS DEVICEHIGH=UDMA.SYS It seems a bit faster than QDMA.SYS [ Last edited by shella on 2006-4-10 at 07:15 ]

Floor7　DOSforever	Posted 2006-04-10 10:39
金牌会员　Posts 2,239　Credits 4,639
Originally posted by dato at 2006-4-10 00:32: The previous XDMA and now QDMA, one is to enable the hard disk's DMA mode, which has a good speed Have you compared which is better between QDMA and UDMA? Refer to: XDMA vs. UDMA

Floor8　shella	Posted 2006-04-10 11:09
初级用户　Posts 31　Credits 187
Originally posted by DOSforever at 2006-4-10 10:39 AM: Have you compared which is better between QDMA and UDMA? Refer to: XDMA vs. UDMA Where can I download NCache2? How to use it? Is it faster than smartdrv?

Floor9　DOSforever	Posted 2006-04-10 11:31
金牌会员　Posts 2,239　Credits 4,639
NCache2 is in NU, but NCache2 needs to recognize the DOS version number. The NCache2 in NU 8.0 can only be used in MS-DOS 6.22.

Floor10　shella	Posted 2006-04-10 14:59
初级用户　Posts 31　Credits 187
It seems that only using UDMA + SMARTDRV. His disk performance is already very high, but there is still a gap with Windows. The last question: Without considering other factors of the driver (memory usage, DOS version number, etc.), can the disk performance of DOS reach the level of Windows? How to set it?

Floor11　DOSforever	Posted 2006-04-10 16:58
金牌会员　Posts 2,239　Credits 4,639
PC-Cache is also better than Smartdrv The second question I think it can't be achieved

Floor12　wl00560	Posted 2006-04-10 17:04
银牌会员　Posts 709　Credits 1,384
Ask, can this software speed up the speed of ghost?

Floor13　zjnbwdj	Posted 2006-04-10 20:01
中级用户　Posts 137　Credits 300
The speed of copying files? Compared with WINDOWS? When DOS's memory management can be as good as WINDOWS, then we can compare again.

Floor14　shella	Posted 2006-04-10 21:04
初级用户　Posts 31　Credits 187
What the person above said is also correct. Well, this matter is like this.

Floor15　DOSforever	Posted 2006-04-10 23:18
金牌会员　Posts 2,239　Credits 4,639
Originally posted by wl00560 at 2006-4-10 17:04: Ask, can this software speed up the speed of ghost? Ghost has its own disk reading and writing method, and the disk buffer software we usually use seems to be ineffective for it. I also want to post a special thread to discuss the disk access method of Ghost.

1 2 　Next