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How many partitions we created on a hard disk (Primary & Logical)

By ITSPL ·
If some body got 160 GB HDD and made 4 Primary partitions each of 30 GB , now 40GB is still unused.what will he do to utilize
that 40 GB or 40GB space will be wasted.

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Merge it into an existing partition?

by seanferd In reply to How many partitions we cr ...

Add extended partitions?

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No My Friend We Can't Do This

by ITSPL In reply to Merge it into an existing ...

Its about MBR (master boot record)& partition
Table MBR has 512bytes of memory out of which
446 Bytes taken by HDD info.2Bytes by Boot.ini file, Now we have remaining only 64K
memory left.One Partition Takes 16Bytes,now if we make four primary partitions all 64Bytes will be used and table is full.Seanfred you know we can't extend a primary partition thats why we make atleast one logical partition to further extend the partitions.We have to delete one primary partition to used remaining 40GB's and make 4th partition as logical partition.Normally we can make 26 partitions (A,B reserved a floopy drive ,b zip drive).Pls reply if anything wrong .

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You're telling me

by seanferd In reply to No My Friend We Can't Do ...

that you cannot delete one partition, and re-create it using the full amount of remaining space? Why? or, you can't use a partition editor to do the same?

Still not understanding why you cannot re-partition and create primary and logical partitions to use up total space that way.

"We have to delete one primary partition to used remaining 40GB's and make 4th partition as logical partition."

Sure, that's one way to do it.

"Normally we can make 26 partitions (A,B reserved a floopy drive ,b zip drive).Pls reply if anything wrong ."

Floppy drives, other drives, etc., have nothing to do with how many partitions you can put on a single HDD. Sure, you are limited to 26 drives in Windows and some other OS, because they assign drive letters.

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What OS is involved here?

by OH Smeg In reply to How many partitions we cr ...

The answer depends on how to proceed further but as stated above merge the unused space into an existing Partition which will have to be the last created or make another partition/s till all of the unused space is used.

Col

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Dear OH its not about OS's

by ITSPL In reply to What OS is involved here?

You can Install as much operating systems as you can.Its about MBR which is still only 512 Bytes memory.If you mistakenly made four Primary Partitions you will not extend/merge
remaining space because Partition table is already full.

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Sorry but the OS is Important

by OH Smeg In reply to Dear OH its not about OS' ...

If it is unable to read 100% of the drive like some then that part of the drive unused will remain unused as the OS can not access it.

This is why some drives came with a Size Limiting Jumper to make that drive reliably usable with some older OS's.

Col

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Also

by seanferd In reply to Sorry but the OS is Impor ...

Not all OS use the Window/DOS type of partitioning scheme, and there is a little thing known as a chainloader because those 512 bytes aren't really enough to start anything but the next step in the boot process.

Not every OS is limited to 26 drives, either. Mount points are really pretty cool.

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2 Suggestions....

by vjsh In reply to How many partitions we cr ...

Hi,
1,you can use that free space by merging is to existing partions. for that there is a built in tool in win7 and a lot of other third party utilities are available.
2, convert the disk to Dynamic and deal with partions as u like....(expand or shrink)
But it is risky to rescue...

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4 Primary Partitions

by ameack In reply to How many partitions we cr ...

How can you have 4 Primary Partitions?

Assuming 1 30G partitions has OS installed in most common cases it is C: Drive
well go to computer management in control panel or may be under Admin tools , then go to Disk mangement and find the remaining 40G and make it an extended partition.

thanks

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