booting Lisa Xenix

From: PSchaefer <dr.p.schaefer_at_email.domain.hidden>
Date: Sat, 1 Sep 2012 13:41:00 -0700 (PDT)

Dear all,

did anybody manage to boot Xenix directly from hard disk, like UniPlus? The installer creates a boot block and puts a 15kB "boot" file into the root directory, but when I try to boot from HD Lisa throws a "75" error (bad system file). It never tries to access any other block than 0000, so something seems to be wrong with that boot code.

The (ProFile 10M) boot block looks like that:

0000: AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA ****************
0010: AAAAAAAA23D70000015823C80000015C ****#W...X#H...\
0020: 46FC27002E7C000220004DFA01487402 F|'..|.. .Mz.Ht.
0030: 61624281617C761F244E284A341C670E abB.a|v.$N(J4.g.
0040: 47FA0110780DB90B56CCFFFC670CD5FC Gz..x.9.VL |g.U|
0050: 0000001051CBFFE460DA613842816152 ....QK d`Za8B.aR
0060: 43F90002200041EE00202A2E0004DAAE Cy.. .An. *...Z.
0070: 0008E085E2855285203C000001E06176 ..`.b.R. <...`av
0080: 6130204E203C0000020051CDFFF24EF9 a0 N <....QM rNy
0090: 0002200053823C02E6465446615E0242 .. .S.<.fFTFa^.B
00A0: 0007ED42204ED0C243FA02DE70406146 ..mB NPBCz.^p_at_aF
00B0: 4E752601E083E2830C43000A6D1645FA Nu&.`.b..C..m.Ez
00C0: 02F2612661360443000AE5433C363002 .ra&a6.C..eC<60.
00D0: 612A600E45FA02BED5C3D683D5C3610A a*`.Ez.>UCV.UCa.
00E0: 611A0681000002004E75528A1C1AE146 a.......NuR...aF
00F0: DC1A4E7512D851C8FFFC4E7548E7FFFF \.Nu.XQH |NuHg  
0100: 2206243C00002710263C00000002283C ".$<..'.&<....(<
0110: 0000000A244E224ED3FC000002000C39 ....$N"NS|.....9
0120: 0002000001B36600000C4EB900FE0090 .....3f...N9.~..
0130: 6000001020790000015C267900000158 `... y...\&y...X
0140: 4E93650000084CDFFFFF4E754EF90000 N.e...L_  NuNy..
0150: 0138626F6F7400000000000000000000 .8boot..........

0160: 5265616420626C6F636B0A0000000000 Read block......

0170: 00000000000000000000000000000000 ................

What qualifies a working boot block? The "AAAA" signature is present. Does the boot code start at offset 0x14 (after the tag bytes)?

Booting from floppy each time to get the ":" prompt is somewhat annoying.

Best regards
Patrick

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Received on 2012-09-02 15:34:28