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Can't Access D: Logical Drive (extended partition)
Hi,
I removed a 800MB hdd, with two partitions (two logical drives), from one computer and put it in an older Compaq 386 computer. Both computers have the same MsDos 6.22 systems. The 386 can access all the space in "C:" drive, but when I try to access "D:" drive, I get an "invalid drive specification" message. Do you know a method that I can access the extended partition in this older 386 computer? Thanks in advance, Brad Before you type your password, credit card number, etc., be sure there is no active key logger (spyware) in your PC. |
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"Brad" wrote in message
... I removed a 800MB hdd, with two partitions (two logical drives), from one computer and put it in an older Compaq 386 computer. Both computers have the same MsDos 6.22 systems. The 386 can access all the space in "C:" drive, but when I try to access "D:" drive, I get an "invalid drive specification" message. Do you know a method that I can access the extended partition in this older 386 computer? 1. Confirm hardware set OK (800 Mb HD jumpered correctly and connected correctly.) 2. Confirm software settings, e.g. what does FDISK say about this drive? If you do not need its data you ought to be able to create a new partition and format it so it appears as D: (I simply do not remember what DOS 6.22 does if it finds two hard drives both set up as Primary DOS partitions.) -- Don Phillipson Carlsbad Springs (Ottawa, Canada) |
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What are the sizes of the two partitions, C: and D:? The BIOS on the 386 may not be
able to "see" beyond a max value of 1024 cylinders. From Partition Magic's help file: "The BIOS 1024 cylinder limitation exists because the start and end cylinder values in the partition table (and some BIOSs) have a maximum value of 1024. Because some operating systems such as DOS 6.22 use the CHS (Cylinder, Head, and Sector) values to address sectors on the disk, they cannot access sectors beyond the 1024 cylinder. When you start your computer the BIOS boots the operating system using the CHS values to locate the first sector of the bootable partition. If the partition starts past the 1024 cylinder, the BIOS may not be able to boot it because it cannot address a cylinder number higher than 1024." Copyright © PowerQuest Corporation. 1994-1999. All Rights Reserved. The problem is likely to occur on computers where the hard disk has a capacity 504 MB or more and the BIOS was manufactured prior to 1994 (approximately). -- Glen Ventura, MS MVP W95/98 Systems http://dts-l.org/goodpost.htm "Brad" wrote in message ... Hi, I removed a 800MB hdd, with two partitions (two logical drives), from one computer and put it in an older Compaq 386 computer. Both computers have the same MsDos 6.22 systems. The 386 can access all the space in "C:" drive, but when I try to access "D:" drive, I get an "invalid drive specification" message. Do you know a method that I can access the extended partition in this older 386 computer? Thanks in advance, Brad Before you type your password, credit card number, etc., be sure there is no active key logger (spyware) in your PC. |
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