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- Several messages here on the IBMOS2 forum and in its library (eg, BOOTDI.GA)
- have been concerned with emergency booting of OS/2 _from_floppy_ to recover
- EAs, CHKDSK, etc. I have come up with my own scheme which I think meets
- the following needs:
-
- 1. Allows the most flexible use of multiple versions of DOS & OS/2.
-
- 2. Allows emergency recovery booting FROM THE HARD DISK, in order to run
- CHKDSK, MAKEINI, etc.
-
- After backing up my entire hard disk, I ran the OS/2 install and ran FDISK,
- and created the following partitions, in the following order on the disk:
-
- 1. 1mb, Boot Manager, and mark it startable.
-
- 2. 1mb partition (primary), for booting DOS. Mark this one as
- drive C:, and bootable
-
- 3. 1mb partition (primary), for booting another version of DOS
- (DR-DOS?, future MS-DOS?). Mark it bootable.
-
- 4. However many program & data partitions (extended) I wanted.
- Mark the one of these that you want to contain most of the OS/2
- files as INSTALLABLE.
-
- 5. Several 2mb partitions (extended), for regular booting of as
- many OS/2 systems as I might want to have on the disk at the
- same time (for me, two). Mark it bootable.
-
- 6. 2mb partition (extended), for what I call "Partition Manager"
- (used for OS/2 emergency recovery). Mark it bootable.
-
- I then continued with a normal OS/2 install into the INSTALLABLE
- partition. Upon bringing up OS/2, I then FORMAT (must use OS/2, not
- DOS) all of the other extended partitions. I specified the FAT file
- system for the 2mb partitions. I then copied the following files into
- the "Partition Manager" partition (#6 above):
-
- Directory of I:\
-
- DLL <DIR> 05-25-92 1:34a
- OS2 <DIR> 05-25-92 1:34a
- OS2BOOT 1099 03-30-92 2:00a
- OS2KRNL 716044 03-30-92 2:00a
- OS2LDR 32256 03-30-92 2:00a
- OS2LDR MSG 8440 03-30-92 2:00a
- CONFIG SYS 462 05-25-92 1:31a
- COUNTRY SYS 24604 03-30-92 2:00a
- KEYBOARD DCP 5177 03-30-92 2:00a -- from the install floppy
- VTBL850 DCP 10478 03-30-92 2:00a -- from the install floppy
- CMD EXE 87552 03-30-92 2:00a
- CHKDSK COM 68656 03-30-92 2:00a
- FDISK COM 104759 03-30-92 2:00a
- FORMAT COM 63744 03-30-92 2:00a
- 14 file(s) 1123271 bytes
-
- Directory of I:\DLL
-
- . <DIR> 05-25-92 1:34a
- .. <DIR> 05-25-92 1:34a
- BKSCALLS DLL 401 03-30-92 2:00a
- BMSCALLS DLL 398 03-30-92 2:00a
- BVHVGA DLL 40668 03-30-92 2:00a
- BVSCALLS DLL 454 03-30-92 2:00a
- DOSCALL1 DLL 87884 03-30-92 2:00a
- KBDCALLS DLL 858 03-30-92 2:00a
- MOUCALLS DLL 1010 03-30-92 2:00a
- MSG DLL 477 03-30-92 2:00a
- NAMPIPES DLL 711 03-30-92 2:00a
- NLS DLL 465 03-30-92 2:00a
- NPXEMLTR DLL 25280 03-30-92 2:00a
- OS2CHAR DLL 56320 03-30-92 2:00a
- QUECALLS DLL 14994 03-30-92 2:00a
- SESMGR DLL 31256 03-30-92 2:00a
- VIOCALLS DLL 1825 03-30-92 2:00a
- 17 file(s) 263001 bytes
-
- Directory of I:\OS2
-
- . <DIR> 05-25-92 1:34a
- .. <DIR> 05-25-92 1:34a
- FD16-700 ADD 29962 03-30-92 2:00a -- Future Domain SCSI only
- IBM1FLPY ADD 24026 03-30-92 2:00a -- non-PS/2 only
- IBM1S506 ADD 12908 03-30-92 2:00a -- non-PS/2 only
- IBM2ADSK ADD 10724 03-30-92 2:00a -- PS/2 only
- IBM2FLPY ADD 12997 03-30-92 2:00a -- PS/2 only
- IBM2SCSI ADD 15780 03-30-92 2:00a -- PS/2 only
- 000000 BIO 2560 03-30-92 2:00a
- W020100 BIO 3072 03-30-92 2:00a
- W020101 BIO 4608 03-30-92 2:00a
- W050000 BIO 1536 03-30-92 2:00a
- W050100 BIO 2560 03-30-92 2:00a
- W050101 BIO 3072 03-30-92 2:00a
- W060100 BIO 6656 03-30-92 2:00a
- W0F0000 BIO 1536 03-30-92 2:00a
- OS2DASD DMD 31994 03-30-92 2:00a
- OS2SCSI DMD 10462 03-30-92 2:00a
- IBMINT13 I13 9564 03-30-92 2:00a -- non-PS/2 SCSI only
- ABIOS SYS 103 03-30-92 2:00a
- CLOCK01 SYS 3666 03-30-92 2:00a -- non-PS/2 only
- CLOCK02 SYS 3710 03-30-92 2:00a -- PS/2 only
- KBD01 SYS 29013 03-30-92 2:00a -- non-PS/2 only
- KBD02 SYS 25429 03-30-92 2:00a -- PS/2 only
- PRINT01 SYS 8934 03-30-92 2:00a -- non-PS/2 only
- PRINT02 SYS 7994 03-30-92 2:00a -- PS/2 only
- SCREEN01 SYS 1441 03-30-92 2:00a -- non-PS/2 only
- SCREEN02 SYS 1590 03-30-92 2:00a -- PS/2 only
- 28 file(s) 265897 bytes
-
- Total files listed:
- 59 file(s) 1652169 bytes
-
- Note that if you need any special disk drivers, you will have to include
- them (like I needed to for FD16-700.ADD above).
-
- Note also that the above includes only CHKDSK, FDISK, and FORMAT. If you
- want to access any other OS/2 programs (eg, MAKEINI, ATTRIB), you can do
- so by switching to the partition that contains them, and run them. For
- obvious reasons, this may not be practical with the above three, which
- is why I included them.
-
- The above CONFIG.SYS contains:
-
- ProtectOnly = Yes
- Buffers = 32
- DiskCache = 64
- IOPL = Yes
- MemMan = NoSwap
-
- BaseDev =IBM1FLPY.ADD -- non PS/2 only
- BaseDev =IBM1S506.ADD -- non PS/2 only
- BaseDev =FD16-700.ADD -- non PS/2 only
- BaseDev =IBM2FLPY.ADD -- PS/2 only
- BaseDev =IBM2ADSK.ADD -- PS/2 only
- BaseDev =IBM2SCSI.ADD /LED -- PS/2 only
- BaseDev =OS2DASD.DMD
- BaseDev =OS2SCSI.DMD
- BaseDev =IBMINT13.I13 -- non PS/2 only
-
- CodePage= 850
- Country = 001, \COUNTRY.SYS
- DevInfo = Kbd, US, \KEYBOARD.DCP
- DevInfo = Scr, VGA, \VTBL850.DCP
-
- ProtShell=\CMD.EXE
- LibPath =.;\DLL
- Set keys=ON
-
- NOTE THE ABSENSE OF DRIVE LETTERS IN THE ABOVE FILE. This is important,
- as running FDISK can change drive assignments.
-
- Now the above partition is bootable, and comes up in OS/2 command mode.
-
- To install a particular version of OS/2 into one of the 2mb partitions
- (say drive G:):
-
- 1. If you want to put ANY and/or ALL of your OS/2 files in directories
- with other than the "standard OS/2" directory names, NOW IS THE TIME
- TO MAKE THIS DECISION for THIS particular 2mb OS/2 boot partition.
- For any such directories, edit the INI.RC and INISYS.RC on your
- normally-installed OS2 drive (say drive D:) in D:\OS2, and change
- the pathnames to what you want them to be (do NOT move the files
- at this time). Of course, save the original .RC files!
-
- This step is not necessary unless you plan to have multiple versions
- of OS/2 on your system at one time.
-
- 2. Copy the above H:\OS2*.* (boot) files into G:\. Also copy your
- OS/2 version of AUTOEXEC.BAT to G:\.
-
- 3. Copy the above H:\OS2\*.* (driver) files into a directory named
- G:\OS2.
-
- 4. Run: MAKEINI G:\OS2.INI D:\OS2\INI.RC (your edited file)
- MAKEINI G:\OS2SYS.INI D:\OS2\INISYS.RC (your edited file)
-
- 5. Copy the OS/2 version of CONFIG.SYS into G:\, modifying it so
- that USER_INI and SYSTEM_INI point to the above G:\OS2.INI and
- G:\OS2SYS.INI files. If you decided to move any OS/2 files, make
- the appropriate changes to this copy of CONFIG.SYS.
-
- 6. If you decided to move any OS/2 files, boot the "Partition Manager"
- and move them at this time.
-
- 7. Now boot partition G:. OS/2 will reinitialize itself (like it does
- after every install).
-
- If OS/2 (on drive G:) ever "permanently" crashes, just:
-
- 1. Boot the "Partition Manager".
-
- 2. Repeat step #4 above.
-
- 3. Remove directories G:\NOWHERE and G:\OS2.DTP, and all directories
- and files in them.
-
- 4. Run CHKDSK G: /F
-
- 5. Reboot partition G:
-
- Note that steps #3 can be done under DOS (that's what I do); if you do
- so, then also run:
-
- ATTRIB G:\*.* -H -S -R /S
- DEL G:\EA?DATA.?SF
-
- To install DOS, just boot a DOS diskette and "FORMAT C:/S". By making
- appropriate changes to the DOS CONFIG.SYS and AUTOEXEC.BAT, you can put
- all other DOS files anywhere you want them. To install another version
- of DOS (or the same version, say with a different CONFIG.SYS/AUTOEXEC.BAT)
- in the other partition, just run FDISK from the "Partition Manager" and
- change the "C:" partition.
-
- If you don't like my idea of the 1mb DOS boot partitions (and changing all
- of your references to C: to D:, D: to E:, etc), you can of course omit
- them and make the first partition on the drive (after the Boot Manager)
- a primary partition containing DOS.
-