China DOS Union

-- Unite DOS · Advance DOS · Grow DOS --
Union site: www.cn-dos.net　Forum site: www.cn-dos.net/forum

中国DOS联盟论坛
The time now is 2026-08-12 05:19

47,811 topics / 349,897 posts / today 0 new / 48,256 members

GRUB4DOS、SYSLINUX及其它启动管理软件讨论专区 » How to determine that there are two boot records in the MBR under CMD

Floor1　XiaoGuDong	Posted 2008-10-04 23:40
初级用户　Posts 88　Credits 172
As the title says, some computers have already installed a MBR-based one-click restore. How to get a prompt when reinstalling this kind of software again? [ Last edited by XiaoGuDong on 2008-10-4 at 23:48 ] Attachments 联想.JPG (15.37 KiB)

Floor2　fujianabc	Posted 2008-10-05 10:29
金牌会员　Posts 1,616　Credits 3,467
This should mean that the partition table is full, that is, there are four primary partitions.

Floor3　XiaoGuDong	Posted 2008-10-05 10:59
初级用户　Posts 88　Credits 172
My computer has only one primary partition and five logical partitions, not four primary partitions, but there is a MBR-based one-key restore installed! The question is how to judge whether a MBR-based one-key restore is installed? [ Last edited by XiaoGuDong on 2008-10-5 at 11:01 ]

Floor4　wowfans	Posted 2008-10-14 11:44
初级用户　Posts 21　Credits 56
This... There are several methods of judgment. Which one do you want to use? Generally speaking, if you don't install other MBRs, then the most likely your MBR is the MBR of Microsoft fdisk. The function of this MBR is to boot from the boot sector of the active primary partition of the hard disk. By comparing other MBRs with the MBR of FDISK, find some characteristic strings. For example, the first 11 bytes are all 33C08ED0BC007CFB5007501F. Export the content of the first 11 bytes on absolute track 0 with a partition software, and compare it with the above value. If it matches, it means that no other one-key restoration is installed. If it doesn't match, it means that other MBRs are installed.