Ms Dos Part-3 how to use ms dos ms dos kya he.file or dir par work karna file or dir ko hide karna,

Hi friends ms dos part-3 me file ko hide kese kiya jata he file or dir ko a to z ya z to a kese kiya jata he ye bataya gaya he,
Computer se sambandhit
or video dekhne ki liye link niche de gai he vaha se aap computer se samvandhit video par click kar dekh sakte he, Thanks.
(1) New computer ko connection https://www.youtube.com/watch?v=HGCi9jfVpFw&t=28s
(2) Recycle bin https://www.youtube.com/watch?v=CnUhm7-Vma0&t=240s
(3) Sleep mode https://www.youtube.com/watch?v=p_hAaYYHeW0&t=37s
(4) my computer kya he https://www.youtube.com/watch?v=80gjDExdzuE&t=46s
(5) computer ko on off kese kare:- https://www.youtube.com/watch?v=5pkwVLdEO3E&t=56s
(6) Desktop kya he https://www.youtube.com/watch?v=2Pg1Ir8HS0A
(7) How To uninstall Software, https://www.youtube.com/watch?v=9HelhfZqPxo
(8) How to create folder. https://www.youtube.com/watch?v=8_h0iK8S-dA
(9) Screen Settings https://www.youtube.com/watch?v=tjILG544yys&t=73s
(10) Screen Sever settings https://www.youtube.com/watch?v=BC2Dv3MXvCw&t=97s
(11) https://www.youtube.com/watch?v=BC2Dv3MXvCw&t=17s
(12) Mouse setting https://www.youtube.com/watch?v=olgGs_u8Ky0&t=171s
(13)Ms Dos Part-1 https://www.youtube.com/watch?v=Z8W68OeXUv4&t=4s
(14) Ms Dos Part-2 https://www.youtube.com/watch?v=XHpZaF26xsM&t=22s
(15) Ms Dos Part-3 https://www.youtube.com/watch?v=lAX1Cxf7wT4&t=1s
(16) Ms Dos Part-4 https://www.youtube.com/watch?v=154N66Csztg&t=20s

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