Attachment 11418 Details for Bug 25924 – Python3 program to fix Mageia-7.1 hybrid ISO MBR

[patch] Python3 program to fix Mageia-7.1 hybrid ISO MBR

mageia-iso-fix.py (text/plain), 1.01 KB, created by Ihar Areshchankau on 2019-12-22 15:37:04 CET

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Creator: Ihar Areshchankau

Created: 2019-12-22 15:37:04 CET

Size: 1.01 KB

patch

obsolete

>#mageia-iso-fix.py
>import sys, os
>if len (sys.argv) != 2:
>	print (" Mageia hybrid ISO image MBR patching utility.")
>	print (" Usage:")
>	print ("python3 mageia-iso-fix.py Mageia-...-i586.iso")
>else:
>	IsoFileName = sys.argv[1]
>	FirstPartTypeOffset = 450
>	MbrSignatureOffset = 510
>	if not os.path.isfile (IsoFileName):
>		print ("Error:", IsoFileName, "isn't a file name.")
>	else:
>		f = open (IsoFileName, "r+b")
>		sector = bytearray (f.read (512))
>		if sector[MbrSignatureOffset] != 0x55 or sector[MbrSignatureOffset + 1] != 0xAA:
>			print ("Error:", IsoFileName, "doesn't have MBR.")
>		elif sector[FirstPartTypeOffset] == 0:
>			print (IsoFileName, "doesn't need to be patched.")
>		else:
>			print ("Patching", IsoFileName, " MBR:")
>			print ("First partition code is:", hex (sector[FirstPartTypeOffset]))
>			sector[FirstPartTypeOffset] = 0
>			print ("First partition code changed to:", hex (sector[FirstPartTypeOffset]))
>			f.seek (0)
>			f.write (sector)
>			print (IsoFileName, "is patched now.")
>		f.close ()

#mageia-iso-fix.py
import sys, os
if len (sys.argv) != 2:
	print (" Mageia hybrid ISO image MBR patching utility.")
	print (" Usage:")
	print ("python3 mageia-iso-fix.py Mageia-...-i586.iso")
else:
	IsoFileName = sys.argv[1]
	FirstPartTypeOffset = 450
	MbrSignatureOffset = 510
	if not os.path.isfile (IsoFileName):
		print ("Error:", IsoFileName, "isn't a file name.")
	else:
		f = open (IsoFileName, "r+b")
		sector = bytearray (f.read (512))
		if sector[MbrSignatureOffset] != 0x55 or sector[MbrSignatureOffset + 1] != 0xAA:
			print ("Error:", IsoFileName, "doesn't have MBR.")
		elif sector[FirstPartTypeOffset] == 0:
			print (IsoFileName, "doesn't need to be patched.")
		else:
			print ("Patching", IsoFileName, " MBR:")
			print ("First partition code is:", hex (sector[FirstPartTypeOffset]))
			sector[FirstPartTypeOffset] = 0
			print ("First partition code changed to:", hex (sector[FirstPartTypeOffset]))
			f.seek (0)
			f.write (sector)
			print (IsoFileName, "is patched now.")
		f.close ()

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Attachments on bug 25924: 11418 | 11424 | 11425 | 11436