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Minor changes about GPT in description of boot sectors

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This commit is contained in:
Thomas Schmitt 2015-02-06 11:57:06 +01:00
parent 3b0ba17f3d
commit 0819f93f79
1 changed files with 5 additions and 3 deletions
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8
doc/boot_sectors.txt
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@ -574,8 +574,7 @@ bit1 becomes bit30, and so on. Further it gets exored with 0xffffffff.
A GUID consists of a 32-bit integer, two 16-bit integers, and an array of A GUID consists of a 32-bit integer, two 16-bit integers, and an array of
8 bytes. The integers are to be stored big-endian. 8 bytes. The integers are to be stored big-endian.
A globally registered class of GUID are the partition type GUIDs. A globally registered class of GUID are the partition type GUIDs:
This example uses two of them
Basic data partition: a2 a0 d0 eb , e5 b9 , 33 44 , 87 c0 68 b6 b7 26 99 c7 Basic data partition: a2 a0 d0 eb , e5 b9 , 33 44 , 87 c0 68 b6 b7 26 99 c7
HFS+ partition : 00 53 46 48 , 00 00 , aa 11 , aa 11 00 30 65 43 ec ac HFS+ partition : 00 53 46 48 , 00 00 , aa 11 , aa 11 00 30 65 43 ec ac
EFI System partition: 28 73 2a c1 , 1f f8 , d2 11 , ba 4b 00 a0 c9 3e c9 3b EFI System partition: 28 73 2a c1 , 1f f8 , d2 11 , ba 4b 00 a0 c9 3e c9 3b
@ -1225,7 +1224,7 @@ intentionally non-essential:
They may be overwritten by other bytes which must not produce errors or They may be overwritten by other bytes which must not produce errors or
undesirable side effects when executed as x86 machine code. undesirable side effects when executed as x86 machine code.
The following 32 bytes from block 0 of an Apple Partiton Map (APM) are such The following 32 bytes from block 0 of an Apple Partiton Map (APM) are such
harmless code. They stem from Fedora-LiveCD.iso by Matthew Garret: harmless code. They stem from Fedora-LiveCD.iso by Matthew Garrett:
45 52 08 00 00 00 90 90 00 00 00 00 00 00 00 00 45 52 08 00 00 00 90 90 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
They do not depend on any properties of the ISO image or the information They do not depend on any properties of the ISO image or the information
@ -1443,6 +1442,9 @@ Start at block 0xa4 = 164 * 512 = 41 * 2048. The VFAT image file.
Last block is 0x0513 = 1299 = 164 + 1135. This end is correct. Last block is 0x0513 = 1299 = 164 + 1135. This end is correct.
(Potential isohybrid.c bug #4: (Potential isohybrid.c bug #4:
Wrong character set and incidential bytes in GPT partition name.) Wrong character set and incidential bytes in GPT partition name.)
(Potential isohybrid.c bug #5:
The EFI System Partition should have type GUID :
"C12A7328-F81F-11D2-BA4B-00A0C93EC93B")
Next entry at byte 0x02100 = 8448: Next entry at byte 0x02100 = 8448: