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DOS疑难解答 & 问题讨论（解答室） » [Solved] USB hard disk driver under DOS

Floor1　willsion	Posted 2008-01-04 11:22
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My Samsung SATA USB hard disk is formatted as FAT32. usbmass 4.05 can detect all partitions, but it cannot read or write them. Using config to load usbaspi.sys is the same. Could any friend provide a suitable driver? Thanks. [ Last edited by willsion on 2008-1-5 at 05:43 PM ]

Floor3　willsion	Posted 2008-01-04 23:50
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Reporting to the admin, DUSE still doesn't work after running it, and it can't detect the USB hard disk either. However, if I connect the USB hard disk before booting into DOS, then it can actually be detected and read/written even without any driver, wow

Floor4　fujianabc	Posted 2008-01-05 10:39
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Originally posted by willsion at 2008-1-4 11:50 PM: Reporting to the admin, DUSE still doesn't work after running it, and it can't detect the USB hard disk either. However, if I connect the USB hard disk before booting into DOS, then it can actually be detected and read/written even without any driver, wow How can you read and write it before booting DOS? What system are you in?

Floor5　wang6610	Posted 2008-01-05 15:08
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Originally posted by fujianabc at 2008-1-5 10:39 AM: How can you read and write it before booting DOS? What system are you in? What he means is, plug in the drive first and then boot up..

Floor6　willsion	Posted 2008-01-05 16:03
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How can you read and write it before booting DOS? What system are you in? What he means is, plug in the drive first and then boot up.. wang6610 is right, I was unclear. If I connect the USB hard disk and then boot into DOS, it can still be read and written even in pure DOS. [ Last edited by willsion on 2008-1-5 at 04:05 PM ]

Floor7　bc12060101	Posted 2008-01-05 16:44
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Originally posted by willsion at 2008-1-5 16:03: wang6610 is right, I was unclear. If I connect the USB hard disk and then boot into DOS, it can still be read and written even in pure DOS. [ Last edited by willsion on 2008-1-5 at 04:05 PM ] Hehe, that's quite normal! The premise is that your motherboard supports USB devices.

Floor8　willsion	Posted 2008-01-05 17:42
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Many thanks to all of you, this problem is basically solved.

Floor9　fujianabc	Posted 2008-01-05 20:47
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If the BIOS supports USB booting, then under DOS you don't need a USB driver, but on many machines USB is rather slow in this situation.

Floor10　willsion	Posted 2008-01-05 23:20
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Originally posted by fujianabc at 2008-1-5 08:47 PM: If the BIOS supports USB booting, then under DOS you don't need a USB driver, but on many machines USB is rather slow in this situation. That's indeed the case. I tried it again with a USB flash drive: if it is connected before booting DOS, then after DOS starts it can also be read and written normally. As for the speed, I don't know, I haven't compared it. But if the USB flash drive is connected only after DOS has started, usbmass can drive it (read/write), while the USB hard disk cannot.