New tool to guess raid_start (bootsector detector)

1 files changed, 35 insertions, 0 deletions

diff --git a/tools/find_bootsect.py b/tools/find_bootsect.py
new file mode 100755
index 0000000..f52e910
--- /dev/null
+++ b/tools/find_bootsect.py
@@ -0,0 +1,35 @@
+#!/usr/bin/env python
+import os, logging, binascii
+
+disk_count = 15
+disk_order = [ 0,1,2,4,5,6,7,8,9,10,11,12,13,14,15 ]
+disk_paths = [ 'disk%02i.img'%d for d in disk_order ]
+disks      = [ None for d in range(disk_count) ]
+disks_size = [ 0 for d in range(disk_count) ]
+
+for d in range(disk_count):
+    path = disk_paths[d]
+    logging.debug("Try to open disk #%2d"%d)
+    try:
+	disks[d] = open(path, "r")
+	disks_size[d] = os.lstat(path).st_size
+	logging.debug("Opened disk #%2d"%d)
+    except IOError as e:
+	logging.error("Can't open disk #%2d ('%s') : %s"%(d, path, e.strerror))
+	disks_size[d] = 0
+    except:
+	logging.error("Can't open disk #%2d ('%s') : unhandled exception"%(d, path))
+	disks_size[d] = 0
+logging.debug("Exit. open_disks()")
+
+ref_sig = binascii.unhexlify('55AA')
+
+for offset in range(0, min(disks_size), 512):
+    for disk_no in range(disk_count):
+	disks[disk_no].seek(offset)
+	data = disks[disk_no].read(512)
+	sig = data[510:]
+	if sig == ref_sig:
+	    print "%s@%x:%s"%(disk_paths[disk_no],offset,binascii.hexlify(sig))
+
+