(Zyphio original Blog, reproduced please specify the author and source)
The current universal U-kai Mainstream technology has mass production, UD, U+V2, the individual does not like mass production (compared to UD, u+v2, production compatibility is not high, but also difficult to edit, write loss, often tangled master), u+v2 update mirror the most free and flexible, but feel compatible slightly less than UD. UD Fbinst Technology or GPL open source, as an open source complex, I personally still most respected UD, but also encountered problems and frustration, so there is this idea.
... specific as follows:
partition basic structure:
Ud+exfat+fat16 (only two regular visible partitions)
special methods of production:
1. Separate the FAT16 primary partition at the end of the USB flash drive (capacity optional, 1GB enough), achieve a high-end hidden effect similar to u+v2, including grub4dos external menu, various boot files and images, and uefi boot files, which is compatible with UEFI boot;
2. In the middle of the U disk, from the 16,384th sector began to separate EXFAT partition, activation, the largest capacity, as a U disk main storage data area for daily storage, can save more than 4GB of files;
3. Finally, the USB flash drive 8MB (16,384 sectors, that is, the 0~16383 sector) is formatted as UD partition with Fbinsttool, and the format of any option is not selected, which can automatically generate Fbinst boot sector, UD master data area without UD expansion data area. (key, put in the back of the operation is to ensure that the FB boot sector has the first two partitions of the partition table information, to cope with some abnormal BIOS, thereby improving compatibility);
4. Write a unique file in the UD Master data area: GRLDR, modify the built-in menu to jump to the external menu of the high-end hidden partition.
Compatibility:
1. Preserving the Fbinst boot sector of UD mode is superior to the u+v2 boot sector;
2. Compatible with both Legacy-bios and UEFI boot;
3. Compatible with files larger than 4GB, can place NT6 above system image;
4. Resolves a problem in some BIOS, Pe,ud extended partition file call failed or read too slow (encountered SanDisk CZ50 4GB on HP Cq36-119tx laptop to read the UD Extended Data area and read and write unusually slow on an Kuroshio motherboard, This may be caused by the compatibility of the U disk, the replacement of a U disk will not, there is a chance to test again clear).
Practicality:
1.UD partition without how to move, no extended data area, only occupy the necessary 8MB space, save space, internal only hundreds of KB grldr, boot can be loaded at high speed;
2. External menus, boot files, image files and other frequently changed files placed in high-end hidden areas, relative to the UD partition, FAT16 partition easy to mount, the file is easy to edit, easy to update, read and write fast, unlimited continuous sector storage.
3. If you feel that the high-end hidden areas do not want to expand, at any time can be deleted, dynamically partition exFAT partition of the remaining space to supplement, lossless EXFAT partition of the existing large amounts of data, not the overall format transfer data, reduce flash loss!
2. In high-end hidden partitions, legacy-bios and UEFI boot share a PE image to save space (PE image if placed in UD, that also must be copied to the regular partition to the UEFI boot use, redundant deployment, wasted space);
Insufficient:
While this method loses the hidden advantage of UD partitioning for conventional partitioning software, it can compensate for this regret by using high-end hidden partitions like U+V2, which also improves security under Windows.
Share a U-start idea that combines UD, u+v2 high-end hiding, support for UEFI and 4GB large files
