OK, I went on and did it. I didn't even have to reenable it, that part went fine.
But I did have issues in that I can no longer boot into Ubuntu, just get a flashing cursor in the upper-left side of the screen. I did have to resize things because the Win7 partition didn't have enough space for the upgrade. So here's the current partition layout followed by what I did.
PARTINFG, Version 1.00
Copyright (c) 2010 TeraByte, Inc. All Rights Reseverd
Run Date: 5/21/2012 1:44 PM
===============================================================================
MBR Partition Information (HD0 - 0xD0F4738C)
(CHS: 1022/239/63) (WCHS: 10333/240/63)
+====+====+=============+====+=============+=============+=============+
| 0: | 80 | 0 32 33 | 7 | 13 239 63 | 2048 | 204800 |
| 1: | 0 | 13 163 20 | 7 | 1023 239 63 | 206848 | 118276096 |
| 2: | 0 | 1023 12 61 | df | 1023 239 63 | 156235776 | 12288 |
| 3: | 0 | 1023 41 42 | f | 1023 239 63 | 118482944 | 37752832 |
+====+====+=============+====+=============+=============+=============+
Volume Information
+----+----+-------------+----+-------------+-------------+-------------+
| 0: | 0 | 0 0 0 | 0 | 0 0 0 | 0 | 0 |
| 1: | 0 | 1023 202 11 | 5 | 1023 239 63 | 2046 | 4194306 |
| 2: | 0 | 0 0 0 | 0 | 0 0 0 | 0 | 0 |
| 3: | 0 | 0 0 0 | 0 | 0 0 0 | 0 | 0 |
+----+----+-------------+----+-------------+-------------+-------------+
| 0: | 0 | 1023 74 11 | 82 | 1023 239 63 | 2 | 4194304 |
| 1: | 0 | 1023 170 27 | 5 | 1023 239 63 | 4196352 | 33556480 |
| 2: | 0 | 0 0 0 | 0 | 0 0 0 | 0 | 0 |
| 3: | 0 | 0 0 0 | 0 | 0 0 0 | 0 | 0 |
+----+----+-------------+----+-------------+-------------+-------------+
| 0: | 0 | 1023 202 59 | 83 | 1023 239 63 | 2048 | 33554432 |
| 1: | 0 | 0 0 0 | 0 | 0 0 0 | 0 | 0 |
| 2: | 0 | 0 0 0 | 0 | 0 0 0 | 0 | 0 |
| 3: | 0 | 0 0 0 | 0 | 0 0 0 | 0 | 0 |
+----+----+-------------+----+-------------+-------------+-------------+
===============================================================================
EMBR Found (HD0)
-------------------------------------------------------------------------------
Revision: 2 Min SPT: 9 Sectors: 1 SSize: 512
Last Cyl: 1022 Last Hd: 239 SPT: 63
-------------------------------------------------------------------------------
MPT Found Revision: 5 Number of Entries: 4 Flag: 1
-------------------------------------------------------------------------------
Num Name Flag Start End FS ID
----- ------------------ ------ ----------------- ----------------- ---- ----
0 System Reserved 0 2048 206847 7 1
1 Windows 7 0 206848 118482943 7 2
2 Extended 2000 118482944 156235775 F 81
3 BootIt EMBRM 4000 156235776 156248063 DF 80
-------------------------------------------------------------------------------
MBFT Found Revision: 2 Number of Entries: 0
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
MDT Found Revision: 2 Number of Entries: 1
-------------------------------------------------------------------------------
0: BootIt EMBRL Flag: 20 Start: 0 NumSecs: 7 Alloc: 70 ID: 0
===============================================================================
BOOT SECTOR INFORMATION
-------------------------------------------------------------------------------
File System ID: 0x7 LBA: 2048 Total Sectors: 204800 ID: 0x1
Jump: EB 52 90
OEM Name: NTFS
Bytes Per Sec: 512
Sec Per Clust: 8
Res Sectors: 0
Zero 1: 0x0
Zero 2: 0x0
NA 1: 0x0
Media: 0xF8
Zero 3: 0x0
Sec Per Track: 63
Heads: 240
Hidden Secs: 2048
NA 2: 0x0
NA 3: 0x800080
Total Sectors: 0x031FFF
MFT LCN: 0x02155
MFT Mirr LCN: 0x02
Clust Per FRS: 0xF6
Clust Per IBlock: 0x1
Volume SN: 0x9AAA9441AA941BB7
Checksum: 0x0
Boot Flag: 0xAA55
-------------------------------------------------------------------------------
File System ID: 0x7 LBA: 206848 Total Sectors: 118276096 ID: 0x2
Jump: EB 52 90
OEM Name: NTFS
Bytes Per Sec: 512
Sec Per Clust: 8
Res Sectors: 0
Zero 1: 0x0
Zero 2: 0x0
NA 1: 0x0
Media: 0xF8
Zero 3: 0x0
Sec Per Track: 63
Heads: 240
Hidden Secs: 206848
NA 2: 0x0
NA 3: 0x800080
Total Sectors: 0x070CBFFF
MFT LCN: 0x0C0000
MFT Mirr LCN: 0x02
Clust Per FRS: 0xF6
Clust Per IBlock: 0x1
Volume SN: 0xB0EA9622445D06C2
Checksum: 0x0
Boot Flag: 0xAA55
-------------------------------------------------------------------------------
File System ID: 0xDF LBA: 156235776 Total Sectors: 12288 ID: 0x80
Jump: E9 77 0
OEM Name: BOOTITXX
Bytes Per Sec: 512
Sec Per Clust: 8
Res Sectors: 1
Num FATs: 2
Root Dir Ents: 512
Sectors: 12288
Media: 0xF8
Secs Per FAT: 5
Sec Per Track: 63
Heads: 240
Hidden Secs: 156235776
Huge Sectors: 0
Drive Num: 0x80
Res: 0x0
Sig: 0x29
Vol ID: 0x4F8A0661
Volume Label: BOOTIT~1
FS Type: FAT12
Boot Flag: 0xAA55
-------------------------------------------------------------------------------
So there was the two partitions for Win7 (initially only Win7 was on this box), the partition for BIBM -- I just call it BING because I talk out loud to myself while typing & it's easier to say
. I then a while back created an extended partition for Ubuntu, and It had two partitions within it -- one for Linux swap, one for ext4 Ubuntu root.
So I:
1) resized the Ubuntu root partition, made it quite a bit smaller
2) resized the extended partition a corresponding amount
3) did a 'slide' to put the new free space immediately in front of the Windows 7 main partition
4) resized the Win7 main partition to consume all that free space
So I should have ended up exactly where I started, just different sizes. Not sure where I went wrong... I will edit this to add the BIBM settings in a few minutes.