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SysTools Partition Recovery Software Awards & Reviews

I start using MiniTool Partition Wizard Home Edition to resize and creat the rest of partitions. But every time I would like to create a new partition i got this 'There are no free MBR slots on the disk' I need to create 3 patitions more.

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The effective functioning of the software for fixing corrupted partitions is rated 4 stars by CNET. SysTools partition recovery software contributed them by fixing corrupt NTFS partition on Windows OS.

Softpedia awarded SysTools Partition repair tool the 100% clean and secure award for rendering an effective and constant support in solving errors related to FAT and NTFS file system.

Partition repair utility is rated 4 stars by software.informer. This award rating was given to the software for the feature of recovering data from GPT protective partition and recover extended partition files.

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According to Softonic, SysTools Partition recovery tool can be rated as an outstanding product to repair a damaged partition table. Use software and retrieves data from corrupted MBR, GPT and extended partition.

Download.hr tested, SysTools Windows partition data recovery software and marked it No Adware and No Viruses. Also, it is labeled as 100% clean utility. So, download and install this best partition recovery software on your system.

When the IBM PC was first launched, it came with a simple disk operating system called DOS, provided by Microsoft. For the PC-XT and its hard disk, IBM made a decision that a PC might ultimately have up to four operating systems installed at the same time. Each operating system would have its own portion of the disk, called a partition. For this reason, the first sector of each disk on a PC, called the MBR (Master Boot Record), contains a table with four entries, each giving the starting and ending locations of the four partitions.

The order of the four entries in the MBR need not correspond to the actual order of the partitions of the disk, and there may be gaps between the partitions and before the first one and after the last one. Some thought reveals that in the worst case, a disk may have as many as nine regions: four partitions and five gaps, like this.

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It is also possible for a single operating system to use multiple partitions. For example, a user might decide to partition the disk with two partitions, one for the operating system and one for user data. This arrangement makes it easy to back up user data without having to back up the operating system. It also makes it easy to install a new version of the operating system without losing any user data.

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It was not too long before IBM and Microsoft decided that four partitions was not enough. Rather than simply make the partition table in the MBR bigger (which would not have been backward compatible with previous versions of MS-DOS), it was decided that (normally only one) partition could be marked as EXTENDED, meaning that it contains one or more subpartitions, called logical drives. A partition that is not an extended partition is called a primary partition. Together, the primary and extended partitions comprise the four top-level partitions.

Unfortunately, nearly all disk partitioning software displays the primary and extended partitions, and logical drives in such as way as you might think they are all equals. This is definitely not true and is quite confusing as each logical drive is a subpartition of some enclosing extended partition. In addition, some partition management software displays partitions in the order they appear in the MBR, rather than in order of their disk addresses.

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MS-DOS and Windows are normally configured with one primary partition and optionally one extended partition. In most cases, the primary partition is called C: and the extended partition, if present, contains D:, E:, etc., depending on how many logical drives have been created there. The advantage of putting D:, E:, etc inside an extended partition, instead of allocating each one its own primary partition, is that it leaves MBR partition table slots available for other operating systems. Below is an example disk showing one primary partition (C:) and one extended partition containing two logical drives (D: and E:).

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It is important to realize that the entire concept of drive letters, like C:, is an MS-DOS concept, later taken over by Windows. No variant of UNIX, such as BSD, Linux, or MINIX 3, uses drive letters at all. All UNIX systems simply deal with the four top-level partitions in the MBR.