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missing operating system

Posted on 1998-01-14
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Last Modified: 2013-12-14
hai!

i have create partition(FAT) and format HP harddisk which was installed Windows 95 previously on HP Vectra Pentium(23RAM).

then i install Windows NT on it. when i restart my PC, it doesn't recognize the OS WinNT.

i tried with fdisk(MS-DOS) and found that the partition is already created.

i have no idea to resolve this problem. Any idea?

Thanks,

Regards,

pet
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Question by:suhai
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olas earned 100 total points
ID: 1769413
If the disk is physically ok and works under other OS.
(That is, if You are sure that this error started to occur
after installing NT and only when You try to start NT.)

If this is true:
a) boot on DOS-floppy.
b) Run FDISK and check if your newly partition is active
   Menu alt. 2 allows You to set active partition

What NT does is that it modifies the MBR to point to
NTLDR. Unless there is an active partition NTLDR wont be able to
load and continue to load NT.

If this doesn't work there are other remedies.
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Author Comment

by:suhai
ID: 1769414
olas,

Actually, after i format harddisk, i straight forward install NT.
on first restart, there was boot error, missing ntldr as u said.
then i delete partition and create a new one. the error "missing operating system" occured.

i have check the partition and was already set active.
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Expert Comment

by:olas
ID: 1769415
Ok, so there can be a few problems:
1. After installing NT: NTLDR. really is missing
   Solution: Reinstall it!
2. After reformatting: There are no OS at all
   Solution: Install DOS!
3. Other hardware related problem
   Solution: We'll find it!

Questions:
1. "missing op...": Did You transfer DOS-system files?
2. Are You using FAT even under NT?

If you are using FAT under NT:
a) Reinstall NT after making certain that dos, with systemfiles,
are properly installed on your primary partition.
b) Reboot
c) If You get missing NTLDR: Boot on DOS-floppy and
check on Your PRIMARY partition that NTLDR. is there.
If It is not: copy it from the CD or another system and make
sure it is placed on the PRIMARY partition.

An alternative way to do this is to boot on your NT startup-disks
and select repair. Then choose to repair only boot-files.
This requires the NT-CD.

If nothing of this helps - there are other ways!
Good Luck!


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