Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!usc!pollux.usc.edu!kjh From: kjh@pollux.usc.edu (Kenneth J. Hendrickson) Newsgroups: comp.os.minix Subject: booting (bootblok.s) Message-ID: <29173@usc> Date: 6 Jan 91 05:53:37 GMT References: <1990Dec31.200332.12381@dsuvax.uucp> Sender: news@usc Organization: EE-Systems, USC, Los Angeles Lines: 250 Nntp-Posting-Host: pollux.usc.edu In article <1990Dec31.200332.12381@dsuvax.uucp> ghelmer@dsuvax.uucp (Guy Helmer) writes: >Also, the bootblok.s that's in my copy of MINIX version 1.5 has very >poor support for booting off 3.5" drives. It's supposed to support >booting off a 720K 3.5" drive, This reminds me ... I cheerfully re-submit this idea about booting: (I hope it finds its way into an official release. Please feel free to test it and fix any bugs, and then post to the net. I think it is already bug-free.) 1) When you create a bootdisk, you definitely know what size disk it is. 2) The boot program on a disk of type X can (and should) know what type of disk it exists on, and doesn't need to check! 3) Other "configuration" routines exist for the kernel - for example the hard disk device driver. Therefore, I submit my configuration routines for bootblok.s, for the /usr/minix/tools directory. This configuration is for choosing the type of disk a boot image is being made on. It has the advantages that it doesn't beat the disk drive to death upon boot-up, and booting is significantly faster. I have tested it for 360k and 1200k disks - but not for 720k disks. 1.44M disks are left as an exercise for the reader. I didn't actually write any new code - I just did a hack job on bootblok.s to keep just the revelant portions for each type of disk. begin 644 bootblok.sh.Z M'YV-9<:@>0,"#X@6(,:\<6,FS1D%<\J0`7'BA1`<&# M!\47)Q1@@2/GS9D>8,2$B>@F3)LR($C``*-2Y9B9.$G$`)'&C6!+B`>%LV MJPJFE@42%$&"I4L=(.K,"7.F#.K2+4=N`4$5!!\08FV#:`L#1)?%61-!%D$$+E9;<&;^A%-%%%%V6T$4H>>3<9B'.09%)%*6%QVQ5HE.$& M"'34"`(40Q#5(ASME2&'1"`LQ`)1F@T9!ADMY@A@&G+,H9ET8RQH1DM].0F" M&8;!`4<>*MW6X(-$N4$?@60XA5R+,.!QPQ!N$>C&1&K4T08<31*4F0L@@$`% M&@[R1^6";:BFF4)FAE%4F#CJV"$(IITAATUE-AIH0W/QZ:>CD4$:VZ1]-13E MH6_`D09R2$;$QE_T,;JDFG.T*$,--BQQT&XU)`4""F>VIEEFJO[U1AV:O<&J MCG>$D4<*FOYI(Y(@&+9DDSHR6JJ08=!1U$ASY"%E&:%BV2A.CXZY1AETT(%3 M46?>U(:`>1Q9UT1.WECGG7F"<),;=;C`*!-O++FMCR"X,1B.7Z41!AN`!12& M:CAIR2/!==146,0$*:D?PF%466:K,NH++KP$CM%2K`2"8`,-M@96,1EAR!'O M>P1I">0O^2.RX0P*6Q[B`W9>? MIRZ!2J`9Z@Y('!HS,>B@0D`3.=`=C(KA$-[73JJM&]QZJVY?#FI*X[-:=O@= MWY)2>FE1#M8X$=;;LL`HL=:,8M-?(*!LS:4;''01!+P>3E7;>J=H@A,GH%';Z)_/96DI//1S9"D0D MNS5S>O"@=N>-'QDZ,'J%@/II1C8-J(WP7D!4YXNU_/0CD/U@8(/\@8`(4P"! MV]@`MRT)2&3\`N#T!`@"LN'`@!-;8`,#-"#=2;!^%8P!#`PXA`1J$$`/]*", M&/6G0`$-9PL!G_JF9!B/%4I*#2-0K,!UL8G<(3,#F5M$R"K`9/+A%*5,,XVUJ5#?KK:^&"_HA&Q@F MI9AI!G644TD8I2B$)#QA"E/(XA:["(,W]6:.?1JCD"(V0\"@,55E6!7!L"81 M.0)2"$]X`A7RJ$4NMFD&1@C"'P$IR+H11XT,4\B7$*E(%,RJ5BV(@0MJL(04 M.'*."%R"$(*0QSVV!9!BW`U7]F@V%70Q!D78(QSH,*`SF0M2,;,)NH14FM,D8#5M5([3@-OGUA3&T:)HBQ(I*7'`&PQ2F M86=0%Q[H<"2GG0%F7*MG&4TB MU$).&=8I4)784Z#QPX(+#&K1?1HTHRY0:$?Y&2N05K0SMQ'EW3QWR#-U*"(/ MP0(NWV6',(8!#RP801WO2,E7AI&F8602"V[JTRGBX8%3Q!D+<(9+*8II#CI@ M*D($Y)"B+,R0;ZA24:4(U"G>-*>0E&1/90K(KDH1.4/%PU;[=-0!3;%!+&A0 M4P/I,ZC*%2%><\^@UJJO-]1TBF/`Z0A.V=3;Z*]W],L732>:E2'!X2@TO4," M)IO24MW-,*7RZ5&6R#4Y3*E3IG$B&>HPI*.HX4YI2$`;/7NDL$XRBPFX#7P2 MDB_7CE4EJZ5#1A-@UCZ1`:?FY&MO&32'N!IDKK)%%W&M1EN^MM6F."4J6>=*ZZF2VJSE2AZ?[4KV'TYV^QFUS-H.Q,YB2*"\9SI#9ZK"@@`-09T`"2 MTGIWBL-E8DYCD"L;X/(VI-/6PM*@!YPPD;GRI:]"[,LHEK`+!)(J`[JV!5F_ M)N"K@Z4L"(2G7#ND@0QE>,-1V)6`-J6S,S,%KU<%VR88H"6V(-AI`H_&,/C" M86YC(.T<'@C?.H120%Z3@W.1*D4QX-3(0W:K%']K7+X^>(HF[FZ*_UIDP488 M77RE\10=;":LW&8*RI6/`P>D2ADTP7`/2MI1VGKAZ*HU*S053G&ERUL+,YE) M%;9#FW.:+2(>!:9RSG,"8CG+/*;US_L,-)PM3&A:%F$%,FAR9Q+`YJ_>5,,< MU@R"1FRF$N,A!C/P,@@`MB3(P0%;DZOM06HP-O(>^=4&IPVH9UZ;Y_ZF]L`S:>PHKTH` ML3,,XU>GR\#\>^!0SO`&5(&-O[I"@0BD1C4#S<"569D#&MB@;<'&0,.%8H.V MX#"[:5.-:^]5P@](EXG@??-OW[G9F0*;:A]M;X1-O>,7I M#7&,,US0:#6RAA>,DU<)KT6!0HX.E(V"'^8(,`:Q)+PI+2"$BQS&$2EY8**" M[30UQ=A22RN,KZNN-;9H^<(8IB49:WT_3T^`&J0NI);(0<.M*]*-O*TNG\G![8+^JKF0G=QU M_>4.):\;&1:"$SC&-"YWVO,S%R;QCV=E[0G`&MSM])PT'&N0!'M7&:\6L*ZC M=-2=']C@O:8I(Y!.WJF!0]*F'%06>Q&3,ICC;=:`'[+KZ%U4$ZZ*I8CA%KME M"'P=%AVRS(8T#!NGQ.S8L0D,8]WY#`^GGEJ+],?T*+T@^>\]WIM9OV(66)-Z MN9PM3/>5I'TZ*'#-Y/Z2YWS!B"75/Y3Y9M_W_ M521.(@<_%!'C!F)S(JIV(FLZ(K$48L? M!E"T"!4)4(@X4Y'".`9W(G4+PP)RH6&!DEL#\XM< M!%`KZ9%K8%IE8&MT$'&W$7>6]WYO,!=;5VHQ-!1*R(0@)F3Q5@=2IU2_-7)% M2"R%%R0#TH8*43'#EQ4@5H[P*%MIL$=EN(MGZ'F,,@0UXH,$D7-$<2R!HC$) M<3(1T2+[L3(M,RQS$C-W@P)G@0,!.0?,LCUU`#PTUB(W-"4E9P=O\)!DT"PZ M8G:^$E%]<0=V$^QV17R8Q[1'B:Z31YL!`3`5!GDW95 MR9JN*8\`&9L].9OR1F\89I,$(H>^DP;`XY:`41<+,GBH@I:Y)4`&1V],-@+. M:8=[%)W3R3+5Z0964IK)25!98Q19(9)P0)*^9H<:UFL@D'\,0E\W41)M,Q47;^&Q18X:;29"=`1\R()D6]E6WZ8]#>C:3:(^S28J4:8K= M=H=`R"`;NFE0AZ(F26]9FHPPB6T)U114UV+W)B9:BJ3#*'4"$:8C)X>_2*4& M9Z%Q077."3Q<%)1%,91Y!J=LP`*%,7(;JHU-PXW0*(U%,7-%,0:":JAL&(I1 M2I?>6%74:*("JNXFJNUN@*,SJJO*NJR[>AR_*@<9 MA4LWAGJ\MWT.V'\PEU-F,)1$B4M:)D7"2EZ>\F!M,`>'QV;`%E@21R5L^ M5F(*ETC*!W8YH$XK\11F@AK8%;!T%:Y2XJ\C@0)&!F]31I*# MBK!XP!0!>%6(PC5%T2("$3/,Y33C:B:-=%]2I"Y2(@:\-ZA7-8'\LD9Q&#,_ MP%=JX#5AQ!(U&;"W83!\5:H"&X")9("EFJHJ`;.1R55^);*\IZ=FXWXQ8#9< M%*X7VZV`]*AAI&P""V!N8#+@8B/F14P#`R3L(B1\-:WT564W*UMA$!4PQW]" MVR>%L5_BRD'[U!(O`Q*&090TAZ=BX&MUJV'DTQJ;X61F$D91)K,),78Q9D<) M9`5)0`1%\`1?8$==6RI/"X`3*#Q40R[6.D1@1&<"0M%FD@,"M'(KLY`+MX(`-!@+M&\+I=1#:\ M:P-'$@-',@.ZP4&0HAQ8T&>HFP"JR[IMXKJXZV*U6P.URP+\A;LQ(`2\Z[MM M4@,T$+S#>R1V>1O(FRU8L:UME[HS,08$IA=2P(5M)R":$@3$TFK9(IU;UR$N MP`5RP`5N`!Q7IEO.V[[O*P+^*P21,3!-D`1.D`0RI4HUH"E#8%G?B`::$0,Y MD`-#`05#8B;2608M@`1C=R1),+7]^[\!K!(426"B2[K\=8R$0SE$55.\Q,0P\@]$B@5$P87 MC\R%"AJPT(ZYPTV\0Y[T9=/#TR+%$Q5//"[+`Y#/$SV) M53V%A#W:$S+^!T8!2$8*2-G$W3NU]QZ=]49E'5.X)&/=;4E>Y$?N)]YX\RCL@\V*%"B, MY'GM'4FO54E=A$F:--^8]TGGK5*D]!>F!,VIM$JMQ%>-5DM<=$OB>DM/L:5!"KE!TU5`3\5#4XR0105&?.%)JK%%L M;$]OK%%Q;$\*95)1_GD(/LABB1TPQ7_0!5:$.U;JYUOLEV3A=:-,-8%,$E59 M.57?..*93.;=IU/^C>;7&D;_Q^9O=:-R-8$J=U>>J%=HA.=2!&R#12ON=UA% MC,]^)8R.E6>2I92C5*^:E16>P55ZTQ5RVE458 MD5N[-5Q,%EP>VR>R7ESC-8&SU>0$0>NX]%S=)UUI7E=I):[:E2]2UN=)A>N0 M*WO[8U[YDEYIL%XNT%YSZ!9[]%8`!IC#%5V#O\8+9/E_U MQ5@-EKD0-B03%D>K^9FG.ENYJ'$D%F7935T/V*HY%;MN`6-FIV4VAF,ZQF,W MXF/U%62`7F6$6KEA!.Q+=J5\J[E2I.^UWE?8NFT#G&6""ZZ9*VI@%A_/@;Q4 M82OFHF:KV<)ZD%/[JJEO9VEO-HQR=FBK>6?-1/,8]DU^%F^)AAR"%N%%8/.V MEFM`OYI"#VF2-K=[QH]H=B[?MG7PD:\FIIK_TGFFAFKH;#G@LLZM]O1=+&N= M1VMC1Y.XIFMA]AR]]FNP.O-Q1FR5F6R8F:A$ZHFP&8IVVID^MVT)>I$/TL6: M29KFEL'AKF[5YVXSMYP(!Y[XYF/[UF^(&G`#,G"LV)V+'YX99_D=UW@4I_B; M?Y&.MW&7[W$4%VW;2 M_WAL]ZR3=R=R!_91/[]R.YG%]B!\MS]^USN!AQ.CUY3\?'CPJ7@CSOD:!WF2 MIZ#@GY,#&#=]M7ED#4E=O?C'(`A/Z1%KJ:P2`@ M%%V?Z#U>Y/<$'V)!?'H4S2,V+*_Y<)/G$WV2F1NZ2]<')E4*))/QALM7^3X+ MY5@]N_UQ!LC/UBD>WR)*6$#B4NPFD.]X%O*'_M@?TX:?]D\+['?_1UP-!C)2 M@!00`BHC.F(UW`0%^%VP501J=KDDTN$T)*:!EAAD&VN6;01-FA)$Z]0."E)! MW,2;6"80<+G:Q6K[/#.(K]4@NH>#[-X.(A/L@TH%(?0WA$#"G6!*?BUD^*DF M%(4"DA3:4CJ,I14IKL30NE"`^$)W(`R%#/M$ANX20X-#:R@;A:)E%(?V2%"J M0VTJ#W$I[^:'B`D@$D2KB1#!I(J$B!31$&!$9,81H0!()(F,E#GC&%H%ZF"B M<<0'UR"40D?(:109I"N%D/S10GI%AB,7S2*J))%NDT/*.FVH%]$.%0B2!$TQ M0GVOBDPI'S>DAYI1*.I&C"I3?4!B*/:0/_TW>8WH'J=N@(F/8BI#A M,X1(S%#/A,"+E(ORX6Z:AMNP&KZGD71A!M5)@C$I*;V]I&W8DN;$2,R%:FU\I+"V(,T&6^%\K6T\2:BU5-!$EH[X'79(!=DD+Y27$MI<4S-CQ2\9- M8XVMP01BI-@O&UQW!,*@"\74.QK3&7A,Z*)=M4-RA`\S4S#D3+2I'@J6YG=, M1A.$44_P!36U(=5$\YB,TQLO\/#N[<-YF!=9TU(ABKB)B^BF-O2AK!!PZAG" M:1,E)86X1PBB9CJ(BJ\YU2?H]#OHRX"R3@4P.W&A[82^'(YWNCACBHO8M1#5 M,E!C@%"-I08XT3+$$Y^6'WT:.O0%/XFG_>0&^A,7BHJHPJ(5J!*5$A$42V10 M!@,R7+0(I98Z5L7!4QB*\6FH/7(9.E3:*`,O:B(H1Q)5D+!CBEI1W;%%54;Q M2!6G(W.<`S4**6'#);&CS(L''$Y`*BL)*3K8TA@A4L0"2HI)Z1E[6)_FGN23 M4LAO^R%$"C:@:BTH/SLDIV(C+HQ)G>E,4<@1H*8L)!Y2?G'J(Z84 M.J4"06.%@E-Z:DYYPB7TIVKBFXH+@ZI0':-#1:GHH#K$5(YJ:D6J&6D._TVE MB@&7"AR51TX55\24F(B09*M2+86C4*HF"XS967)`5:$V5O557E6P>3->AEEI M25W%JT*&KW([TRU5VHA4@\5HK9@=N&_5U=SP> MR@)Y3\;]A*MR=:YJ3KIZ,VU'+KXK&!"OF`=SK%?W2@[\PZR0[S[-R\,*P@I@ MW:P)1+"P5C]S6`KK6C$L%H`I$T#$^C&SK#BF+(&40X15Q\(E((LPC*RA0N(" MT,D*)81##JRLC->R<,*6\2Q#05S1K(QGLR9E+LE9.`%*NB>?)2EIRMEZ3ONE M:`6@HR5,W-W2XEO@9(I`+<#UJ(:$#2Q866LP<2RF-4?@)-B*6N]A;%$NLR4M M!Q5X6EO<3E(\*+A5`6&>U*E;A$I%P9B\A1.2W1S)DWWB;XDK+6-V#!?B4ER, M*^,!B><@+;$@)Y%ZDZMLT4KP=ROQY<',3)UK:M1$K!"Z1E<`690\KWD]KYD4 MO;R7%Y%=M&MV'8G;U45T5_?"7<"KBQ@!X;4;BM?Q>B#?1"4P+VCEO)`'],(# MTHN/@$SK)3*SUR_A7BK38X(O\=4R04#Y.CM3227029KI`@R8'H!?\NM9U:_[ MY1]0VOZ*#"D,@`DP>$?`FN8<<%]/$X')`04V&!B8`X-@NV&54#`+INTRV`;K M8!\,I8DP$K9&3!@*\U]:DX6M0A=F,2=(#!N1=:$UT`N"<,-@)ENR0C'S\_0P M-_##QDP8(QR:00M>("ZHQ.H&IEAN*Q"*O0_#%"SWB14C2I5%BY4:I_%M!L0_ M>YQCK(Q!N7DB(>;$E-LH/JYUI@D?!U+B&$#9*0P0CYP=5T1"/[$4Z)2$PRXE#)\(:HP"'LXTI\/4[6)3Y9 MR`AE\&R4H8Q2!B=.&9U0:\QEE6T*G?;*RELLDVFT[#;8,J,F.F[$+F-BF0*< M?3IA=LF*6:DX9@ENF4W"9M:B3DDTPQ7IIED=WHQSW@AQUGG( M6?V!SVL`1C-<,_^%)1H:[1CLK'1N<8OZEII%)^L#\+0(%^D/$*&9PQL M%(AZZ++")D:SQPKABHI-+M7!2/<%G=A;$VXTI+R%P?R`V4#`_!!M`P1_G$#/ M%@`]#VUK;:3M!)JVV)9"WN`O'6T7Y`1FD-PFVXRI+=5L]D.$W+;3QD"BWVY3 M&D_QA?RV.FC?8%E8+#D[1+D1"=CGW(9(,JD[1R2)$($ETD2P&XK1;E8$BP"X M[[9)G!U]FY_L`Y2@-T]G>/B*>],C\*V/P`D"!P5A:28+H/JM\YS*1X+JYBD> M$'#U-)?0-P.'LA`<`]T5!K3!L9),"4NF@"QQ-+9DEU2X77+A0(`O,3$:#E)P M.&/"@S[<,M&!SL3.21,O&N-2'-FP`3'NFY0X&,?BTF!Z02'(:Y:085=VRQF(G%K!RM!.. MQ8J1@CNS:I?#8J,$S"U%!S48QMP1Q%88YI\>@1TH5(0=()%X$,C-924X!U6D M2I%8AP(MT;W5,J?GQ(JK&ZQ3Y,]E/+QJ.(J-N"IT<^[0W3G$NNCVHJ,+0)!N ML+6+2<GMU!G6(X!S ME$MZ.1.M;JXFJ?06Z_K=K$L_RF[]&!=CIUQXG0GZ=43F`KJ9'9@$=9URV2X$ MP5Y6P?#"[(@KM&,NTH[:6;MM"%\2S+K;@=]NFHD[0RI@RIV!07?>E>2(FG`U MP"C,O-N+]:[#/"1\UVDPW@[$@"XFX-V&@2>X"MZA.'B"(^']F"A9$Y&KDD%; M1P;B&97DRHPD#2YQF!AOV'$\KFDG6Z6P$GEI3^N(!91G;%0>S6-Y+J\\-CUL MZ#H\7#(!<N:/0^(!&!OP$`V/#7H>M=`\FD@C742LS`M-4*_N9)KI!VI$S0K->N?LJFU0 MK^=J/NBW$7M+@NRM$;.7:&HKR4.65I(952-W"'.6#7_\"W91'BK(;,/WH"S@ M\XOD9O`A4&JV;J`0XM-\L/$VY)O'=_S.892B?`7'-8X^^P=H,Q3HZWP6Q]$: MCM#G^0+MI"U]%N;T*2751T#S6EU9.0:AY0"1-BMS1*SMPX9D2:%Q5GKXSPJP;,>,*G M`U:CB0A!Z@`)Y!_3!P7R4(79;W$*#'1VXF>?V$!<:6M`@.6%!-PG\H=`Z(&KB(.>@HF^V!J&C8Y('9=,>/#9]4"<:(064 MA%@D(7Q"N^@04B$2B@X1I'^438YP)_5$2=B/Y-!6ZA^74`W1R'/("?G43`2% M#I+KZ*$-U5W@`ZX)1(/H1A'<1(0"%M%?Q16/*!)9PEMHB71A)J*+[]`.?D;& M:*5PE)A8B`JI(38DC"2+9E,MLE&X*"-%PS1*#8.1-6Q-QZ@3*:-NV",?R(T4 MDJL)[F%#V1?Y;M#I;51YAS(A7EB;&`NB.IJS/H=`XD//>!?O4>EJ"OMH/G8B MWBMGA>';28B/-R'MD6,X>96AY95(!/]MIM21!(,E=3/6!)[ M.HD8LCFN1/W7$G423.1",G$0`BJ;:*,3%`/"6E5_#.I^^J?JR)9HHW1;\?%VQN-4?/%B:+2TE/#]2"?3**)0 M(W8RCJ6&-=9?Q?>=PA-I7,(&6":@)P>"&W^3%=J-\$D^Q15Y679!;GX2&?P) M*A+@+%P5F:,:4(GHHOGA)#CKH-QC6@)0(N).$4GM>"2Y(Q[PCBX*1(W'&>4N MT=081H]_6#WN8!C5'I<`1`Q+\[)OU64E_)?`!F'/;#N3;R9 M>/_BQ<8;A,\P%WF0HY"+>*D722&UKWCB(H7WPFC(-.5%UI0ICB]X,=>&2"/9 M"6%QB62,\@9/Q2D^W(MG8HLL?T$+1A(J7IP)-9.2#)*PEU'J2!@IJ32AH;61 M0#(0WL$073=9T2JT(63O`W"DIK"#2KIJH"-FI55,B)-RN,N M>1N^)+#:6,.*6!2K&!A(SJ0\UI)KLHT]*S?9+57#UU*NJ5( MIBO`5(T%K;LFL9 MY(*IE5<#V6*!"ZMDJY3!,)^FHAZ,/EE M]O.7B6MQ/8'&13"_)>"27.46+0.2R]60+9ZKY%RQTG--S,Y0,6%8SSI=3--F M2&`+K)\UL`<6P=1FGZA@7^*"N4T.MB/B9@@;825L_MQ-%08< M6-X+NY@U0(8%SAI&.+5.#D.8!.D&"Z.1BI;-!@3'_##FWA.HTJZQ3C@VY>0)2V)@;"ZM8;JQJ:-QY "(0!7 ` end -- favourite oxymorons: student athlete, military justice, mercy killing Ken Hendrickson N8DGN/6 kjh@usc.edu ...!uunet!usc!pollux!kjh