You can have a maximum number of 26 drives / partitions in Windows 95, one for each letter of the alphabet. A: and B: are reserved for floppy drives. The rest (C: through Z:) can be used for hard drives, CD-ROM drives, tape drives, and other storage devices.
Windows 95 does not have explicit support for SSDs (Solid State Drives). This means it will not perform as well as operating systems that do support them will, and that the drive may wear out prematurely.
Windows 1.0, 2.0, 3.0, 3.1, 95, 98, and ME can support a maximum of 26 drives or logical partitions. Windows NT 3.1, 3.5, 3.51, 4, 2000, XP, 2003, Vista, 2008, and 7 can support several thousand drives / partitions in a system.
There can be any number of drives in Windows Explorer. The minimum number of drives is one (for the primary partition Windows is installed on).
MSCDEX.EXE is a device driver for CD drives in Windows 95 and Windows 98. I haven't seen it used in Win2K or in XP.
24. That's with A: and B: reserved for the floppy drives. 26 might be possible if you disable the floppy controller in the system.
27.
Any external hard drive that presents itself as a standard USB Mass Storage device should work in Windows ME. This is about 95% of the drives on the market. Note that large hard drives may perform very slowly with the FAT32 file system, and Windows ME does not support NTFS.
32
Windows 98 supports both the FAT16 and FAT32 file systems. The FAT32 file system will support drives up to 2 terabytes in size, while the FAT16 file system will support drives up to 2 gigabytes in size.
7.0 was with Windows 95, and Windows 95A 7.1 is Windows 95B
Windows 95 to Windows 98, and then to Windows XP
Windows 95 was released worldwide.