It is suggested that someone make an integrated U disk boot maintenance tool kit installer (to make non-bootable U disks and MP3 players into super powerful boot disks, and it is enough to use 10M to install all classic DOS tools in it). When installing it on a U disk or MP3 player, it will make them into super powerful boot maintenance disks (occupying only 10M), and put all the tools for maintaining the system in the U disk. People generally need to store some data, and it is very likely to be carried with them at any time. As soon as someone's computer crashes, they can take it out and use it to turn the situation around. That would be really cool!..
However, it can also be made by oneself, and it can also be made into a super powerful boot disk. (For example, under DOS, after loading the USB driver, the U disk is treated as a hard disk. Rewrite the master boot record and partition table of the U disk to make it bootable. (It seems that the MBR of the U disk has only one sector, not 63 sectors like a real hard disk, which is exactly one track). It is more convenient under WINDOWS. Use WINHEX or ULTRAEDIT to rewrite the boot code of the bootable U disk's MBR (it seems at 33 C9, and the jump code in front also needs to be checked) and DBR. Change the first partition in the partition table to active partition 80, and rewrite the DBR. Or can the DBR be rewritten using SYS under DOS? I haven't tried this.)
I have made my MP3 into a boot disk, but I haven't tested it yet. Hehe...
Floppy disks are very easy to be damaged, and are as inconvenient to carry as CDs.
My U disk is a bootable one, and most super powerful tools are placed in it. I have also placed the MBR, DBR, FAT table of my hard disk, and the DBRs of each disk. Basically, there is no need to worry about not being able to enter the system. Even without using tools, it is possible to repair by inputting hard disk data manually.
Once, I deliberately changed the values of the partition table and the system boot sector, and it just didn't break down. It really annoyed me!
There were times when I couldn't enter, and then changed back to the original values, and it was normal again. Sometimes playing with the hard disk is quite interesting.
Another time, in order to test the advantages and disadvantages of major maintenance software, I cleared the MBR and DBR of my hard disk.
Those瑞星 repairs, Kingsoft repairs, the famous ndd, diskgen (diskman), easyrecovery, dm, pq, all made a bad show.
Either they were powerless or made things worse! The diskgen got stuck halfway through scanning. ndd scanned for a long time, and after repairing, it messed up my FAT table completely. It made the warning files all messed up after I booted into XP! I restored it with GHOST and cleared it again...
Then I tried KV3000, and it repaired it in one second! (Later I found that maybe KV3000 restored the system using the backup of the original DBR in the 7th sector.)
But other tools didn't know anything...
Crazy...