Acronis os selector 8.0 User Manual

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8.3 
Setting an Active Partition 
If no boot manager is installed on your computer, then the default master 
boot record code located at the beginning of the first hard disk will attempt 
to boot an operating system from the primary partition that is marked as 
active. Only one primary partition may be active. 
The following steps allow you to make a partition active with help of the Disk 
Administrator: 
1.  Choose the first hard disk. 
2.  Choose the primary partition. 
3.  Select the Set partition as active function (from the menu or with the 
Ctrl+A hotkey). 
If Acronis OS Selector is installed on your computer, then the setting of an 
active partition will not affect anything, since OS Selector itself manages the 
active partition flag. This function can also be used to find the letter 
sequence for the chosen operating system. In this case changing active 
partitions should be done for the given operating system in its properties 
dialog. See 5.5.4 «Editing Operating System Properties». 
8.4 
Hiding a Partition 
Hide partition function can be used for temporary blocking access to the 
chosen partition. Unlike similar software, the Disk Administrator allows you to 
hide not only primary but also logical partitions of any type. 
There is also a special mode for hiding partitions from Windows NT/2000/XP 
operating systems. This mode should be used with care, since it is 
incompatible with other partition management software, including that may 
be supplied with these operating systems. 
The following steps toggle the hidden flag for the partition: 
1.  Choose the hard disk. 
2.  Choose the partition. 
3.  Select the «Hide/Unhide» function (from the menu or with the Ctrl+H 
hotkey). 
If Acronis OS Selector is installed on your computer then hiding a partition 
will not affect anything since Acronis OS Selector itself manages the partition 
hidden flag. This function can also be used to find out the letter sequence for 
the chosen operating system. In this case partitions should be hidden in the 
context of the given operating system in its properties dialog. See 5.5.4 
«Editing Operating System Properties». 
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Chapter 8 : Advanced Operations with Disk Administrator