Hi. I've decided to give information of verified SHA1. Of course this is Not bad-dumped or modified. It is from original disk by Microsoft. I'll uploade the SHA1. (04/14/2014) MS-DOS 3.30 (5.25" 360KB / USA) <-- Original Release in 1987 SHA1:6ee1895117a349cfec9db3e7b2c8c998d6a21b61 / Programs SHA1:4664681f6906c08f8dad9ac9c5d954634ca331ed / Supplemental Programs MS-DOS 3.30A (5.25" 360KB / USA) <-- Updated Release in 1988 SHA1:121ad3c636a69dae3a8eee96ef2ebf1152e9d00f / Programs SHA1:97df57499e009101d04bd696d23024b4d220e297 / Supplemental Programs MS-DOS 4.01 (5.25" 360KB / USA) SHA13dcd81c35ae4c2b4d793c86f5b0d2178383b802 / Install SHA1:713b886ccc668cd9a32e3ddba6af5f361ff6d41b / Operating 1 SHA17558cdbce9bda9d8e91b44c13f2e9213eee4801 / Operating 2 SHA1:eb3ac9672f74d797344e67377933c927a06a5a32 / Operating 3 SHA1:86404939411119befc6745d83f18deca28d08514 / Select SHA1:6951cb9efc66ba07ac35902d1c63b952a6240f99 / Shell MS-DOS 4.01 (5.25" 720KB / USA) SHA1:2e7bd2c5f9d95cc68b9e543e777925bf5d987783 / Install SHA1:2b9d40e213e192d30de2532e046cb75dcc9b0138 / Operating SHA1:e2e6dbe2da1ebcc269237d2ba41fc73d5f0e1958 / Shell MS-DOS 5.00 (5.25" 360KB Retail Upgrade / USA) SHA1:083400723e475ed497b276c9d4f2799eff3b88b8 / disk 1 SHA1:9dbbbd267eb9b63447ee04641892ff0bea08cd25 / disk 2 SHA1:5fd3b4fe686d7459b7048ec8f1a38860755a887a / disk 3 SHA1:7623d0fa4b178415c1b85e8d14e452c5fa0a5bf0 / disk 4 SHA1:87b38570250dd12b6b4e4f232d6d3f3ab7960d6c / disk 5 SHA1:aaff65c8263ed44f7af69892a4b9c926ba0ccf75 / disk 6 MS-DOS 5.00 (5.25" 360KB OEM / USA) SHA1:b78aaced6bf262a5aa7af6d328caaf8370539c7c / disk 1 SHA1:0424273d8b63a1d89a880c6737278bcf6003e5d5 / disk 2 SHA1:79595c7831ffa5599f3682e7a9bf43c7b7620387 / disk 3 SHA1:af69f1c0e897a5f19c52941bc6e4fdbe4d17db6e / disk 4 SHA1:b808a9b294b660454ddd84c014525052e6f9223e / disk 5 MS-DOS 5.00a (5.25" 1.2MB Retail Upgrade / USA) SHA1:bf460b0691745cbb650b83839df1d45005529092 / disk 1 SHA1:34a03a55bbf3e58b3c2ab0347f66f898074451d1 / disk 2 MS-DOS 5.00a (5.25" 1.2MB OEM / USA) SHA1:0469dd0f1704ba941587dbc889679d3e60d94080 / disk 1 SHA1:ef2c8eeb210d298fef31ed520f3dc9953530d8ef / disk 2 MS-DOS 6.0 (3.5" 1.44MB Retail Upgrade / USA) SHA1:ef275b681314d99e4dccda51b75a60bd1b3f5de2 / disk 1 SHA1:89d9365b0cbfd3490178c22ad0088aed410716b9 / disk 2 SHA1:127d28b3d016b771c190f875876c6f1ab67fb4cf / disk 3 MS-DOS 6.0 (5.25" 1.2MB Retail Upgrade / USA) SHA1:385fcd5885326a67214ec597c228aef09e7dbcd1 / disk 1 SHA1:9c467cc424f86cc237d6484925175b545bd3e4e2 / disk 2 SHA1:b92278f0bc9b4d9cb8d192c6d39e54001bc21cce / disk 3 SHA1:663074ab01b717aae7ec7e6446acb51451bc20e0 / disk 4 MS-DOS 6.2 (3.5" 1.44MB Retail Upgrade / USA) SHA1:b34723a322c380121101cbdace5f5ae66a71e97c / disk 1 SHA1:873945a89367499bfdc80c1284923bbf30bb010c / disk 2 SHA1:788f63944403c77ca96418372cdd68bb415c8160 / disk 3 MS-DOS 6.2 (5.25" 1.2MB Retail Upgrade / USA) SHA1:e1fbeb608a50b1a8aaa65b28f8b53d1eff466024 / disk 1 SHA1:c1a37a426147d0298706e1b7a57764ee8a9b6588 / disk 2 SHA1:754f13c50923e655d8d17f5a9ea59bd94a96fbfb / disk 3 SHA1:90afe80626fadea2eb95e9f2844e5a65904ae460 / disk 4 MS-DOS 6.22 (3.5" 1.44MB Retail Upgrade / USA) SHA1:3f18e0f833ab3c0a6e231f0dffd2cfd849b40c26 / disk 1 SHA1fb44325e69e58393adfe8c911f709c63db0399c / disk 2 SHA1:cffa2e29b24d033218f73d1a4ba0b19f0a179316 / disk 3 MS-DOS 6.22 (5.25" 1.2MB Retail Upgrade / USA) SHA1:1a2ca99b7ae94f21555326695cbb14a9a1898eee / disk 1 SHA1:f0a37131ba662ca3b8d0d0a291279497b533c156 / disk 2 SHA1:ed14124c32e5075bad74729b2237bf9ef3e53e24 / disk 3 SHA1:f7063a4f9e129ac25013b6b3223e028d758f71aa / disk 4 MS-DOS 6.22 (3.5" 1.44MB OEM or Enhanced Tools / USA) SHA1:30b4b2e99b26b0e5e7dbe61b9892e45fe751a3e8 / disk 1 SHA1:1f268c5487f31982848461b9d628ef10b552c849 / disk 2 SHA1:06de13364e906c4ed69f19627ae0e682eb419078 / disk 3 MS-DOS 6.22 (5.25" 1.2MB OEM or Enhanced Tools / USA) SHA1:cf5981784590dcb94fb41a1a6afa9737d7e24afa / disk 1 SHA1:4621a5c367ae7a47d303ce305da0c67b6148e521 / disk 2 SHA1:a4e97a4e21a35ce7cf1d855aed6b65e0cf05944b / disk 3 SHA1:733fc5bd8848e5618a0dca9ca9bf56beca97c71f / disk 4
(04/19/2014) MS-DOS 6.21 (3.5" 1.44MB Retail Upgrade / USA) SHA1:8b9f2b53f44477ad002fa163ecb5d39619f876af / disk 1 SHA1:e60dbe986f4cdf946e019366ea9b222f5e19f762 / disk 2 SHA1:bc182d4ec2af9aec7cadf3d5dbb73096c9955f4b / disk 3